When people type âwhat is magnesium oxide 400 mg forâ into a search engine, they are usually holding a bottle of tablets and wondering about its human health benefits. The 400 mg dose of magnesium oxide is a common overâtheâcounter supplement used as an antacid and a shortâterm laxative, and to correct magnesium deficiency. But magnesium oxide is far more than a tablet on a pharmacy shelf. As a leading B2B chemical exporter, Hailei Chemical supplies highâgrade magnesium oxide (MgO) to industries where the daily intake isnât measured in milligrams, but in kilograms per tonne of feed or in bulk for refractory linings. In this article, we unpack exactly what magnesium oxide 400 mg is used for, the critical difference between pharmaceutical and industrial grades, and why procurement managers across the world trust our MgO for animal nutrition, fertilizer blending, and highâtemperature kiln linings.
A magnesium oxide 400 mg tablet typically contains 400 mg of magnesium oxide, which translates into roughly 241 mg of elemental magnesium. Because MgO is poorly absorbed in its raw form, it is most frequently utilized as an osmotic laxativeâdrawing water into the intestines to relieve occasional constipationâor as a shortâterm antacid to neutralize stomach acid. In nutritional circles, it serves as a costâeffective way to raise magnesium levels in individuals with a diagnosed deficiency, though healthcare providers often favour more bioavailable forms for longâterm replenishment. The â400 mgâ label refers to the mass of the MgO compound, not the elemental magnesium alone, a distinction that often confuses consumers and even firstâtime procurement buyers unfamiliar with chemical nomenclature.
The benefits of magnesium oxide tablets are largely functional and symptomatic. In a clinical context, magnesium oxide benefits include rapid relief of heartburn when taken as an antacid, because MgO reacts with gastric hydrochloric acid to form magnesium chloride and water. As a laxative, its osmotic effect can restore bowel regularity within 30 minutes to six hours. Some studies suggest that maintaining adequate magnesium status supports muscle function, sleep quality, and cardiovascular health, but because MgO has a lower bioavailability than magnesium citrate or glycinate, its longâterm preventive role is debated. Nonetheless, for acute needs and overâtheâcounter affordability, 400 mg MgO tablets remain one of the most widely used magnesium supplements globally.
When industrial buyers ask about what is magnesium oxide 400 mg for, they are sometimes surprised to learn that the same chemical backbone powers blast furnace linings and dairy cow rations. The key difference lies in purity, heavy metal limits, and particle morphology. Pharmaceuticalâgrade MgO (used in 400 mg tablets) must meet strict pharmacopoeia standards such as USP or EP, with extremely low levels of arsenic, lead, and other toxic metals. In contrast, feedâgrade magnesium oxideâone of Hailei Chemicalâs core exportsâtypically guarantees a minimum MgO content of 87% (often exceeding 90%), with controlled iron, calcium, and silica impurities that are safe for livestock but would not satisfy a pharmaceutical monograph. A cowâs rumen does not require the same bioavailability as a human gut; it needs a steady source of magnesium to prevent grass tetany, often delivered through a mineral premix at inclusion rates of 1â4 kg per tonne of total mixed ration, not a 400 mg pill.
For feed millers and nutritionists, uses of magnesium oxide tablets are irrelevant; what matters is a consistent, freeâflowing powder that blends uniformly into premixes and compound feed. Hailei Chemicalâs lightâburned magnesium oxide, produced under precisely controlled calcination, offers a high surface area and reactivity that supports rumen buffering in dairy and beef cattle. Specifiers look for:
For poultry and swine, magnesium oxide also plays a role in enzyme activation and bone development, but because monogastric animals absorb magnesium more efficiently from other sources, its inclusion is often tacticalâfor instance, to counteract the laxative effect of highâpotassium diets or to improve litter quality. Procurement managers sourcing feedâgrade MgO from China must verify not only the chemical certificate of analysis but also the exporterâs ability to provide consistent bulk shipment lotâtoâlot. Hailei Chemicalâs dedicated quality control protocol includes preâshipment sampling witnessed by thirdâparty surveyors such as SGS or Bureau Veritas, giving buyers confidence in every container or breakâbulk consignment. Visit our magnesium oxide product page to download a typical specification sheet.
If you are a refractory manufacturer searching for ârefractory bricks near me,â the quality of your finished product starts with the magnesia raw material. Deadâburned magnesium oxide (DBM) and fused magnesia are the backbone of magnesiaâcarbon bricks, magnesiaâchrome bricks, and spinelâforming castables used in steel ladles, cement rotary kilns, and glass furnace regenerators. These bricks withstand temperatures above 1700°C, resist basic slag attack, and exhibit excellent thermal shock resistance precisely because of MgOâs high melting point (â2852°C) and chemical stability. Hailei Chemical supplies premium deadâburned magnesia with a bulk density often exceeding 3.40 g/cmÂł and a periclase crystal size optimized for low porosity and high hot modulus of rupture. While ânear meâ signals a local search intent, international buyers frequently ship MgO in container loads or big bags from our Qingdao warehouse, combining cost efficiency with the performance characteristics demanded by modern refractory recipes. Understanding the multiple uses of refractory bricksâfrom tundish linings to copper smelting convertersâhelps procurement teams specify the correct MgO grade, whether 97âgrade for critical wear linings or 90âgrade for maintenance mixes.
Moving further from the question what is magnesium oxide 400 mg for, industrial applications demonstrate the versatility of this inorganic compound. In fertilizer production, MgO serves as a secondary macronutrient carrier, correcting magnesium deficiencies in crops like oil palm, wheat, and tomatoes. Our agriculturalâgrade magnesium oxide, typically ground to a fine powder, is blended into NPK granules or used directly as a soil amendment to raise pH and supply soluble magnesium. In flue gas desulfurization (FGD), power plant environmental engineers rely on MgOâbased wet scrubbing systems to capture over 95% of SOâ from coalâfired boiler exhaust. The process regenerates magnesium sulfite, which can be thermally decomposed to recover MgO, creating a closedâloop system that reduces solid waste compared to limestone gypsum methods. Municipal and industrial water treatment plants also use magnesium oxide to precipitate heavy metals, adjust pH, and enhance bioâsolids dewatering. Across these sectors, the requirement diverges drastically from a 400 mg tablet: a single FGD module may consume several tonnes of highâreactivity lightâburned MgO per day.
Whether you are formulating a new cattle mineral premix, scaling up refractory brick production, or securing a longâterm MgO supply for environmental compliance, supplier reliability is nonânegotiable. Hailei Fine Chemical Co., Ltd. operates a vertically integrated magnesite processing facility in Shandong Province, controlling calcination temperature, residence time, and final particle sizing to deliver exactly the grade you needâlightâburned for feed and FGD, deadâburned for refractories. Our inâhouse laboratory performs Xâray fluorescence (XRF), laser particle size analysis, and wet chemistry assays on every lot, and we welcome customer audits and sample testing. Shipping documentation, including Certificate of Origin (Form E for ASEAN markets), fumigation certificates, and full MSDS, is prepared by an experienced export team that handles FCL, LCL, and bulk vessel bookings. To discuss your specification or request a competitive CFR price to your nearest port, get a quote today or explore the full range of magnesium oxide grades we offer.
When procurement managers hear “magnesium oxide,” they often picture refractory bricks lining a steel furnace or a flue gas desulfurization scrubber. Yet the same compoundâMgOâis also the active ingredient in a 400 mg tablet that millions rely on for occasional constipation relief. How exactly does magnesium oxide work for constipation, and more importantly, how can industrial buyers secure the precise grade needed for pharmaceutical manufacturing, animal nutrition, or high-temperature kilns? In this comprehensive guide, we connect the scientific mechanism behind MgO’s laxative effect with the quality specifications, sourcing strategies, and cross-industry applications that matter to your supply chain. Whether you need light-burned magnesium oxide for antacids and supplements or dead-burned magnesia for refractory bricks near me, a thorough understanding of the material’s behavior ensures you buy the right product at the right price.
At a chemical level, magnesium oxide relieves constipation through an osmotic effect. When ingested, MgO reacts with hydrochloric acid in the stomach to form magnesium chloride (MgClâ) and water. The unabsorbed magnesium ions remain in the intestinal lumen, creating a hypertonic environment that draws water into the bowel. This increased water content softens stool and stimulates peristalsisâthe rhythmic muscular contractions that move waste through the colon. A standard what is magnesium oxide 400 mg for query usually points to this exact application: a 400 mg tablet delivers roughly 240 mg of elemental magnesium, enough to produce a gentle laxative effect within 6 to 12 hours.
For supplement manufacturers and private label brands, the key is sourcing a highly reactive, light-burned grade with consistent particle size distribution and minimal heavy metal contamination. The USP monograph for magnesium oxide requires a minimum assay of 96.0% and strict limits on arsenic, lead, and iron. Hailei Chemicalâs pharmaceuticalâgrade MgO is produced under a lowâtemperature calcination process (typically 700â1000 °C) that preserves a high surface area and rapid acid neutralization profile, ensuring predictable laxative action. If your next order involves buy magnesium oxide for constipation products, note that coarse, slowâreacting grades can delay onset and irritate the GI tractâa liability no brand wants.
While the consumer question how does magnesium oxide work for constipation dominates search, pharmaceutical buyers also purchase MgO for antacid formulations, magnesium deficiency supplements, and even dental cements. As a mild base, MgO neutralizes excess gastric acidity without the rebound effect seen with calcium carbonate. In dentistry, a deadâburned, fusionâprocessed grade of MgO serves as the powder component in zinc phosphate cement, prized for its high compressive strength and biocompatibility.
For all these uses, the critical technical parameters are loss on ignition (LOI), bulk density, and reactivity time. A typical pharmaceuticalâgrade lightâburned MgO from Hailei Chemical carries a LOI below 5%, a tamped density of 0.35â0.55 g/cmÂł, and a citric acid reactivity of less than 60 secondsâspecifications that guarantee rapid dissolution and consistent therapeutic performance. If your line includes effervescent tablets or powder sachets, our micronized grades (Dâ â †10 ”m) ensure smooth mouthfeel and uniform blending with other excipients.
While pharmaceutical applications demand high chemical purity, industrial users prioritize physical properties such as sintering temperature, crystallinity, and grain size. Hailei Chemical supplies three main categories, each tailored to a distinct process:
Calcined at 700â1000 °C, this grade is highly reactive and widely used in magnesium hydroxide fertilizer production, animal feed supplementation, and water treatment. When slaked with water, it forms magnesium hydroxide [Mg(OH)â], a slowârelease magnesium source that corrects soil acidity and provides essential plant nutrition. The same hydroxide slurry is sprayed in flue gas desulfurization (FGD) systems to capture SOâ, producing magnesium sulfite that is easily oxidized and disposed of.
Fired at 1000â1500 °C, hardâburned MgO retains enough reactivity for industrial water treatment and animal feed pellet binders. Its lower surface area compared to lightâburned material makes it suitable for controlledârelease magnesium fertilizers, often blended with urea or potash in magnesium hydroxide fertilizer granules. For feed millers, a granular specification of 2â4 mm with a magnesium content of 56%+ ensures freeâflowing handling and optimal rumen buffering in dairy cows.
When you search for refractory bricks near me, the underlying raw material is deadâburned MgO, sintered at 1500â2000 °C to achieve a dense, inert periclase structure. This material withstands temperatures exceeding 2800 °C and is the backbone of basic refractory linings in cement rotary kilns, electric arc furnaces, and glass melters. Hailei Chemicalâs deadâburned magnesia is available in lump or granular form, with a grain density above 3.40 g/cmÂł and low CaO/SiOâ ratio for high hot modulus of rupture (HMOR). Our 97âgrade DBâMgO typically achieves a FeâOâ content of 0.6% and a boron content below 0.04%, preventing premature fluxing in demanding steelmaking environments.
In ruminant nutrition, magnesium oxide serves two primary functions: preventing grass tetany (hypomagnesemia) in grazing cattle and buffering rumen pH during highâconcentrate feeding. Lightâburned MgO is chosen for its superior acidâneutralizing capacity, with a typical recommendation of 20â40 g per head per day for lactating dairy cows. Feed millers evaluating suppliers should look for a solubility of 8â12% in 0.1 N HCl after 30 minutes, as this correlates with rumen availability. Hailei Chemicalâs feedâgrade MgO consistently tests at Mg â„ 56%, LOI †5.0%, and passes the CITIC America mold count limits, ensuring compliance with FDA and EU feed additive regulations.
Although the phrase magnesium hydroxide fertilizer is often used in agronomy, the production sequence usually starts with lightâburned MgO. Upon hydration, it becomes a fine magnesium hydroxide suspension that is sprayâdried onto carriers like clay or gypsum. This hydroxide form gradually releases magnesium as soil pH drops, avoiding the rapid leaching that plagues sulfateâbased fertilizers. For compound fertilizer blenders, our granular MgO (2â5 mm) can be directly incorporated into NPK blends, providing a guaranteed 50â55% MgO equivalent. Field trials in acidâprone soils of Southeast Asia have demonstrated a 15â20% yield increase in oil palm and cocoa when 60â80 kg of MgO per hectare is applied annually.
Power plant environmental engineers increasingly select magnesiumâbased scrubbing over limestone for its lower scaling tendency and superior SOâ removal efficiency. Lightâburned MgO slaked at the plant site yields a magnesium hydroxide slurry with a pH of 9.5, which reacts with sulfur dioxide to form magnesium sulfite and sulfate. The bleed stream can be regenerated thermally to reclaim MgO, closing the loop and minimizing solid waste. Hailei Chemical supplies a dedicated FGDâgrade MgO with a surface area of 20â30 mÂČ/g and a reactivity tââ below 15 seconds, enabling rapid scrubber startâup and 99%+ SOâ capture at liquidâtoâgas ratios as low as 4 L/NmÂł.
Municipal and industrial water treatment plants use magnesium oxide as a safer alternative to caustic soda for pH adjustment. Its mild alkalinity provides a buffered pH of 9.0â9.5, sufficient to precipitate metals like lead, cadmium, and chromium as their insoluble hydroxides without overshooting to corrosive levels. A 10% MgO slurry can be dosed directly without generating dangerous heat, and the resulting magnesium hydroxide sludge is easier to dewater than lime sludge. Our waterâtreatment grade is a softâburned powder with a minimum Mg(OH)â conversion rate of 95% after 24âhour slaking, ensuring consistent performance in continuously operating systems.
Whether you are purchasing to formulate what is magnesium oxide 400 mg for supplements or to line a 3000âton cement kiln, consistent quality and reliable supply are paramount. Hailei Chemical operates ISO 9001â and ISO 14001âcertified production lines in Shandong, China, with annual capacity exceeding 80,000 metric tons. Every shipment includes a Certificate of Analysis covering:
For pharmaceutical clients, we maintain a Drug Master File (DMF) and provide full documentation for USP/EP compliance. Our export packaging ranges from 25 kg paperâplastic composite bags to 1.25âton super sacks and bulk containers, all with moistureâproof inner linings. With direct access to Qingdao and Lianyungang ports, typical lead times to the US Gulf Coast are 35â45 days. If you need refractory bricks near me but are actually seeking the raw magnesia to produce those bricks, our sintered clinker can be shipped as breakâbulk or containerized cargo, with a minimum order quantity of 20 metric tons.
Explore our full range of magnesium oxide grades to find the exact specification your process demands. For pharmaceutical manufacturers asking how does magnesium oxide work for constipation and how to secure a USPâcompliant source, our lightâburned pharma grade offers the reactivity, purity, and batchâtoâbatch consistency that regulatory bodies require. For heavy industries needing deadâburned magnesia for refractory bricks, our highâdensity clinker delivers the refractoriness under load and thermal shock resistance your customers expect.
We supply pharmaceuticalâgrade MgO to finishedâdose manufacturers and contract packers. If you produce 400 mg tablets, antacid powders, or magnesium supplements, we can ship in bag or bulk quantities with full DMF support. For individual retail purchases, we recommend consulting a physician and a local pharmacy. However, if your query is to buy magnesium oxide for constipation at industrial scale to manufacture OTC products, request a quotation today.
Magnesium oxide is often hydrated to magnesium hydroxide before being formulated into magnesium hydroxide fertilizer. This conversion provides a controlledârelease magnesium source that resists leaching. Our lightâburned MgO is the preferred starting material for such fertilizers because its high reactivity ensures complete hydration within hours.
Hailei Chemical does not manufacture finished refractory bricks near me, but we do supply the deadâburned magnesia that brick producers around the world use. By partnering with a local refractory brick fabricator and specifying our highâpurity sintered magnesia, you can obtain finished bricks tailored to your kiln or furnace dimensions. Contact us for recommended brick makers in your region that purchase our raw materials.
Whether you are expanding a nutraceutical line, upgrading an FGD system, or sourcing magnesia for animal premixes, Hailei Chemical couples deep technical expertise with a global logistics footprint. Get your customized quote for magnesium oxide and let us help you navigate the grade selection, regulatory paperwork, and shipping options that ensure a smooth procurement cycle.
When procurement managers hear “magnesium oxide,” they often picture refractory bricks lining a steel furnace or a flue gas desulfurization scrubber. Yet the same compoundâMgOâis also the active ingredient in a 400 mg tablet that millions rely on for occasional constipation relief. How exactly does magnesium oxide work for constipation, and more importantly, how can industrial buyers secure the precise grade needed for pharmaceutical manufacturing, animal nutrition, or high-temperature kilns? In this comprehensive guide, we connect the scientific mechanism behind MgO’s laxative effect with the quality specifications, sourcing strategies, and cross-industry applications that matter to your supply chain. Whether you need light-burned magnesium oxide for antacids and supplements or dead-burned magnesia for refractory bricks near me, a thorough understanding of the material’s behavior ensures you buy the right product at the right price.
At a chemical level, magnesium oxide relieves constipation through an osmotic effect. When ingested, MgO reacts with hydrochloric acid in the stomach to form magnesium chloride (MgClâ) and water. The unabsorbed magnesium ions remain in the intestinal lumen, creating a hypertonic environment that draws water into the bowel. This increased water content softens stool and stimulates peristalsisâthe rhythmic muscular contractions that move waste through the colon. A standard what is magnesium oxide 400 mg for query usually points to this exact application: a 400 mg tablet delivers roughly 240 mg of elemental magnesium, enough to produce a gentle laxative effect within 6 to 12 hours.
For supplement manufacturers and private label brands, the key is sourcing a highly reactive, light-burned grade with consistent particle size distribution and minimal heavy metal contamination. The USP monograph for magnesium oxide requires a minimum assay of 96.0% and strict limits on arsenic, lead, and iron. Hailei Chemicalâs pharmaceuticalâgrade MgO is produced under a lowâtemperature calcination process (typically 700â1000 °C) that preserves a high surface area and rapid acid neutralization profile, ensuring predictable laxative action. If your next order involves buy magnesium oxide for constipation products, note that coarse, slowâreacting grades can delay onset and irritate the GI tractâa liability no brand wants.
While the consumer question how does magnesium oxide work for constipation dominates search, pharmaceutical buyers also purchase MgO for antacid formulations, magnesium deficiency supplements, and even dental cements. As a mild base, MgO neutralizes excess gastric acidity without the rebound effect seen with calcium carbonate. In dentistry, a deadâburned, fusionâprocessed grade of MgO serves as the powder component in zinc phosphate cement, prized for its high compressive strength and biocompatibility.
For all these uses, the critical technical parameters are loss on ignition (LOI), bulk density, and reactivity time. A typical pharmaceuticalâgrade lightâburned MgO from Hailei Chemical carries a LOI below 5%, a tamped density of 0.35â0.55 g/cmÂł, and a citric acid reactivity of less than 60 secondsâspecifications that guarantee rapid dissolution and consistent therapeutic performance. If your line includes effervescent tablets or powder sachets, our micronized grades (Dâ â †10 ”m) ensure smooth mouthfeel and uniform blending with other excipients.
While pharmaceutical applications demand high chemical purity, industrial users prioritize physical properties such as sintering temperature, crystallinity, and grain size. Hailei Chemical supplies three main categories, each tailored to a distinct process:
Calcined at 700â1000 °C, this grade is highly reactive and widely used in magnesium hydroxide fertilizer production, animal feed supplementation, and water treatment. When slaked with water, it forms magnesium hydroxide [Mg(OH)â], a slowârelease magnesium source that corrects soil acidity and provides essential plant nutrition. The same hydroxide slurry is sprayed in flue gas desulfurization (FGD) systems to capture SOâ, producing magnesium sulfite that is easily oxidized and disposed of.
Fired at 1000â1500 °C, hardâburned MgO retains enough reactivity for industrial water treatment and animal feed pellet binders. Its lower surface area compared to lightâburned material makes it suitable for controlledârelease magnesium fertilizers, often blended with urea or potash in magnesium hydroxide fertilizer granules. For feed millers, a granular specification of 2â4 mm with a magnesium content of 56%+ ensures freeâflowing handling and optimal rumen buffering in dairy cows.
When you search for refractory bricks near me, the underlying raw material is deadâburned MgO, sintered at 1500â2000 °C to achieve a dense, inert periclase structure. This material withstands temperatures exceeding 2800 °C and is the backbone of basic refractory linings in cement rotary kilns, electric arc furnaces, and glass melters. Hailei Chemicalâs deadâburned magnesia is available in lump or granular form, with a grain density above 3.40 g/cmÂł and low CaO/SiOâ ratio for high hot modulus of rupture (HMOR). Our 97âgrade DBâMgO typically achieves a FeâOâ content of 0.6% and a boron content below 0.04%, preventing premature fluxing in demanding steelmaking environments.
In ruminant nutrition, magnesium oxide serves two primary functions: preventing grass tetany (hypomagnesemia) in grazing cattle and buffering rumen pH during highâconcentrate feeding. Lightâburned MgO is chosen for its superior acidâneutralizing capacity, with a typical recommendation of 20â40 g per head per day for lactating dairy cows. Feed millers evaluating suppliers should look for a solubility of 8â12% in 0.1 N HCl after 30 minutes, as this correlates with rumen availability. Hailei Chemicalâs feedâgrade MgO consistently tests at Mg â„ 56%, LOI †5.0%, and passes the CITIC America mold count limits, ensuring compliance with FDA and EU feed additive regulations.
Although the phrase magnesium hydroxide fertilizer is often used in agronomy, the production sequence usually starts with lightâburned MgO. Upon hydration, it becomes a fine magnesium hydroxide suspension that is sprayâdried onto carriers like clay or gypsum. This hydroxide form gradually releases magnesium as soil pH drops, avoiding the rapid leaching that plagues sulfateâbased fertilizers. For compound fertilizer blenders, our granular MgO (2â5 mm) can be directly incorporated into NPK blends, providing a guaranteed 50â55% MgO equivalent. Field trials in acidâprone soils of Southeast Asia have demonstrated a 15â20% yield increase in oil palm and cocoa when 60â80 kg of MgO per hectare is applied annually.
Power plant environmental engineers increasingly select magnesiumâbased scrubbing over limestone for its lower scaling tendency and superior SOâ removal efficiency. Lightâburned MgO slaked at the plant site yields a magnesium hydroxide slurry with a pH of 9.5, which reacts with sulfur dioxide to form magnesium sulfite and sulfate. The bleed stream can be regenerated thermally to reclaim MgO, closing the loop and minimizing solid waste. Hailei Chemical supplies a dedicated FGDâgrade MgO with a surface area of 20â30 mÂČ/g and a reactivity tââ below 15 seconds, enabling rapid scrubber startâup and 99%+ SOâ capture at liquidâtoâgas ratios as low as 4 L/NmÂł.
Municipal and industrial water treatment plants use magnesium oxide as a safer alternative to caustic soda for pH adjustment. Its mild alkalinity provides a buffered pH of 9.0â9.5, sufficient to precipitate metals like lead, cadmium, and chromium as their insoluble hydroxides without overshooting to corrosive levels. A 10% MgO slurry can be dosed directly without generating dangerous heat, and the resulting magnesium hydroxide sludge is easier to dewater than lime sludge. Our waterâtreatment grade is a softâburned powder with a minimum Mg(OH)â conversion rate of 95% after 24âhour slaking, ensuring consistent performance in continuously operating systems.
Whether you are purchasing to formulate what is magnesium oxide 400 mg for supplements or to line a 3000âton cement kiln, consistent quality and reliable supply are paramount. Hailei Chemical operates ISO 9001â and ISO 14001âcertified production lines in Shandong, China, with annual capacity exceeding 80,000 metric tons. Every shipment includes a Certificate of Analysis covering:
For pharmaceutical clients, we maintain a Drug Master File (DMF) and provide full documentation for USP/EP compliance. Our export packaging ranges from 25 kg paperâplastic composite bags to 1.25âton super sacks and bulk containers, all with moistureâproof inner linings. With direct access to Qingdao and Lianyungang ports, typical lead times to the US Gulf Coast are 35â45 days. If you need refractory bricks near me but are actually seeking the raw magnesia to produce those bricks, our sintered clinker can be shipped as breakâbulk or containerized cargo, with a minimum order quantity of 20 metric tons.
Explore our full range of magnesium oxide grades to find the exact specification your process demands. For pharmaceutical manufacturers asking how does magnesium oxide work for constipation and how to secure a USPâcompliant source, our lightâburned pharma grade offers the reactivity, purity, and batchâtoâbatch consistency that regulatory bodies require. For heavy industries needing deadâburned magnesia for refractory bricks, our highâdensity clinker delivers the refractoriness under load and thermal shock resistance your customers expect.
We supply pharmaceuticalâgrade MgO to finishedâdose manufacturers and contract packers. If you produce 400 mg tablets, antacid powders, or magnesium supplements, we can ship in bag or bulk quantities with full DMF support. For individual retail purchases, we recommend consulting a physician and a local pharmacy. However, if your query is to buy magnesium oxide for constipation at industrial scale to manufacture OTC products, request a quotation today.
Magnesium oxide is often hydrated to magnesium hydroxide before being formulated into magnesium hydroxide fertilizer. This conversion provides a controlledârelease magnesium source that resists leaching. Our lightâburned MgO is the preferred starting material for such fertilizers because its high reactivity ensures complete hydration within hours.
Hailei Chemical does not manufacture finished refractory bricks near me, but we do supply the deadâburned magnesia that brick producers around the world use. By partnering with a local refractory brick fabricator and specifying our highâpurity sintered magnesia, you can obtain finished bricks tailored to your kiln or furnace dimensions. Contact us for recommended brick makers in your region that purchase our raw materials.
Whether you are expanding a nutraceutical line, upgrading an FGD system, or sourcing magnesia for animal premixes, Hailei Chemical couples deep technical expertise with a global logistics footprint. Get your customized quote for magnesium oxide and let us help you navigate the grade selection, regulatory paperwork, and shipping options that ensure a smooth procurement cycle.
When procurement managers hear “magnesium oxide,” they often picture refractory bricks lining a steel furnace or a flue gas desulfurization scrubber. Yet the same compoundâMgOâis also the active ingredient in a 400 mg tablet that millions rely on for occasional constipation relief. How exactly does magnesium oxide work for constipation, and more importantly, how can industrial buyers secure the precise grade needed for pharmaceutical manufacturing, animal nutrition, or high-temperature kilns? In this comprehensive guide, we connect the scientific mechanism behind MgO’s laxative effect with the quality specifications, sourcing strategies, and cross-industry applications that matter to your supply chain. Whether you need light-burned magnesium oxide for antacids and supplements or dead-burned magnesia for refractory bricks near me, a thorough understanding of the material’s behavior ensures you buy the right product at the right price.
At a chemical level, magnesium oxide relieves constipation through an osmotic effect. When ingested, MgO reacts with hydrochloric acid in the stomach to form magnesium chloride (MgClâ) and water. The unabsorbed magnesium ions remain in the intestinal lumen, creating a hypertonic environment that draws water into the bowel. This increased water content softens stool and stimulates peristalsisâthe rhythmic muscular contractions that move waste through the colon. A standard what is magnesium oxide 400 mg for query usually points to this exact application: a 400 mg tablet delivers roughly 240 mg of elemental magnesium, enough to produce a gentle laxative effect within 6 to 12 hours.
For supplement manufacturers and private label brands, the key is sourcing a highly reactive, light-burned grade with consistent particle size distribution and minimal heavy metal contamination. The USP monograph for magnesium oxide requires a minimum assay of 96.0% and strict limits on arsenic, lead, and iron. Hailei Chemicalâs pharmaceuticalâgrade MgO is produced under a lowâtemperature calcination process (typically 700â1000 °C) that preserves a high surface area and rapid acid neutralization profile, ensuring predictable laxative action. If your next order involves buy magnesium oxide for constipation products, note that coarse, slowâreacting grades can delay onset and irritate the GI tractâa liability no brand wants.
While the consumer question how does magnesium oxide work for constipation dominates search, pharmaceutical buyers also purchase MgO for antacid formulations, magnesium deficiency supplements, and even dental cements. As a mild base, MgO neutralizes excess gastric acidity without the rebound effect seen with calcium carbonate. In dentistry, a deadâburned, fusionâprocessed grade of MgO serves as the powder component in zinc phosphate cement, prized for its high compressive strength and biocompatibility.
For all these uses, the critical technical parameters are loss on ignition (LOI), bulk density, and reactivity time. A typical pharmaceuticalâgrade lightâburned MgO from Hailei Chemical carries a LOI below 5%, a tamped density of 0.35â0.55 g/cmÂł, and a citric acid reactivity of less than 60 secondsâspecifications that guarantee rapid dissolution and consistent therapeutic performance. If your line includes effervescent tablets or powder sachets, our micronized grades (Dâ â †10 ”m) ensure smooth mouthfeel and uniform blending with other excipients.
While pharmaceutical applications demand high chemical purity, industrial users prioritize physical properties such as sintering temperature, crystallinity, and grain size. Hailei Chemical supplies three main categories, each tailored to a distinct process:
Calcined at 700â1000 °C, this grade is highly reactive and widely used in magnesium hydroxide fertilizer production, animal feed supplementation, and water treatment. When slaked with water, it forms magnesium hydroxide [Mg(OH)â], a slowârelease magnesium source that corrects soil acidity and provides essential plant nutrition. The same hydroxide slurry is sprayed in flue gas desulfurization (FGD) systems to capture SOâ, producing magnesium sulfite that is easily oxidized and disposed of.
Fired at 1000â1500 °C, hardâburned MgO retains enough reactivity for industrial water treatment and animal feed pellet binders. Its lower surface area compared to lightâburned material makes it suitable for controlledârelease magnesium fertilizers, often blended with urea or potash in magnesium hydroxide fertilizer granules. For feed millers, a granular specification of 2â4 mm with a magnesium content of 56%+ ensures freeâflowing handling and optimal rumen buffering in dairy cows.
When you search for refractory bricks near me, the underlying raw material is deadâburned MgO, sintered at 1500â2000 °C to achieve a dense, inert periclase structure. This material withstands temperatures exceeding 2800 °C and is the backbone of basic refractory linings in cement rotary kilns, electric arc furnaces, and glass melters. Hailei Chemicalâs deadâburned magnesia is available in lump or granular form, with a grain density above 3.40 g/cmÂł and low CaO/SiOâ ratio for high hot modulus of rupture (HMOR). Our 97âgrade DBâMgO typically achieves a FeâOâ content of 0.6% and a boron content below 0.04%, preventing premature fluxing in demanding steelmaking environments.
In ruminant nutrition, magnesium oxide serves two primary functions: preventing grass tetany (hypomagnesemia) in grazing cattle and buffering rumen pH during highâconcentrate feeding. Lightâburned MgO is chosen for its superior acidâneutralizing capacity, with a typical recommendation of 20â40 g per head per day for lactating dairy cows. Feed millers evaluating suppliers should look for a solubility of 8â12% in 0.1 N HCl after 30 minutes, as this correlates with rumen availability. Hailei Chemicalâs feedâgrade MgO consistently tests at Mg â„ 56%, LOI †5.0%, and passes the CITIC America mold count limits, ensuring compliance with FDA and EU feed additive regulations.
Although the phrase magnesium hydroxide fertilizer is often used in agronomy, the production sequence usually starts with lightâburned MgO. Upon hydration, it becomes a fine magnesium hydroxide suspension that is sprayâdried onto carriers like clay or gypsum. This hydroxide form gradually releases magnesium as soil pH drops, avoiding the rapid leaching that plagues sulfateâbased fertilizers. For compound fertilizer blenders, our granular MgO (2â5 mm) can be directly incorporated into NPK blends, providing a guaranteed 50â55% MgO equivalent. Field trials in acidâprone soils of Southeast Asia have demonstrated a 15â20% yield increase in oil palm and cocoa when 60â80 kg of MgO per hectare is applied annually.
Power plant environmental engineers increasingly select magnesiumâbased scrubbing over limestone for its lower scaling tendency and superior SOâ removal efficiency. Lightâburned MgO slaked at the plant site yields a magnesium hydroxide slurry with a pH of 9.5, which reacts with sulfur dioxide to form magnesium sulfite and sulfate. The bleed stream can be regenerated thermally to reclaim MgO, closing the loop and minimizing solid waste. Hailei Chemical supplies a dedicated FGDâgrade MgO with a surface area of 20â30 mÂČ/g and a reactivity tââ below 15 seconds, enabling rapid scrubber startâup and 99%+ SOâ capture at liquidâtoâgas ratios as low as 4 L/NmÂł.
Municipal and industrial water treatment plants use magnesium oxide as a safer alternative to caustic soda for pH adjustment. Its mild alkalinity provides a buffered pH of 9.0â9.5, sufficient to precipitate metals like lead, cadmium, and chromium as their insoluble hydroxides without overshooting to corrosive levels. A 10% MgO slurry can be dosed directly without generating dangerous heat, and the resulting magnesium hydroxide sludge is easier to dewater than lime sludge. Our waterâtreatment grade is a softâburned powder with a minimum Mg(OH)â conversion rate of 95% after 24âhour slaking, ensuring consistent performance in continuously operating systems.
Whether you are purchasing to formulate what is magnesium oxide 400 mg for supplements or to line a 3000âton cement kiln, consistent quality and reliable supply are paramount. Hailei Chemical operates ISO 9001â and ISO 14001âcertified production lines in Shandong, China, with annual capacity exceeding 80,000 metric tons. Every shipment includes a Certificate of Analysis covering:
For pharmaceutical clients, we maintain a Drug Master File (DMF) and provide full documentation for USP/EP compliance. Our export packaging ranges from 25 kg paperâplastic composite bags to 1.25âton super sacks and bulk containers, all with moistureâproof inner linings. With direct access to Qingdao and Lianyungang ports, typical lead times to the US Gulf Coast are 35â45 days. If you need refractory bricks near me but are actually seeking the raw magnesia to produce those bricks, our sintered clinker can be shipped as breakâbulk or containerized cargo, with a minimum order quantity of 20 metric tons.
Explore our full range of magnesium oxide grades to find the exact specification your process demands. For pharmaceutical manufacturers asking how does magnesium oxide work for constipation and how to secure a USPâcompliant source, our lightâburned pharma grade offers the reactivity, purity, and batchâtoâbatch consistency that regulatory bodies require. For heavy industries needing deadâburned magnesia for refractory bricks, our highâdensity clinker delivers the refractoriness under load and thermal shock resistance your customers expect.
We supply pharmaceuticalâgrade MgO to finishedâdose manufacturers and contract packers. If you produce 400 mg tablets, antacid powders, or magnesium supplements, we can ship in bag or bulk quantities with full DMF support. For individual retail purchases, we recommend consulting a physician and a local pharmacy. However, if your query is to buy magnesium oxide for constipation at industrial scale to manufacture OTC products, request a quotation today.
Magnesium oxide is often hydrated to magnesium hydroxide before being formulated into magnesium hydroxide fertilizer. This conversion provides a controlledârelease magnesium source that resists leaching. Our lightâburned MgO is the preferred starting material for such fertilizers because its high reactivity ensures complete hydration within hours.
Hailei Chemical does not manufacture finished refractory bricks near me, but we do supply the deadâburned magnesia that brick producers around the world use. By partnering with a local refractory brick fabricator and specifying our highâpurity sintered magnesia, you can obtain finished bricks tailored to your kiln or furnace dimensions. Contact us for recommended brick makers in your region that purchase our raw materials.
Whether you are expanding a nutraceutical line, upgrading an FGD system, or sourcing magnesia for animal premixes, Hailei Chemical couples deep technical expertise with a global logistics footprint. Get your customized quote for magnesium oxide and let us help you navigate the grade selection, regulatory paperwork, and shipping options that ensure a smooth procurement cycle.