For industrial buyers evaluating bulk mineral salts, the question of magnesium chloride versus magnesium sulfate arises across a wide range of applications—from road de-icing and dust control to metal production and food processing. Both chemicals offer unique physical and chemical properties, yet their performance, handling requirements, and cost-effectiveness can differ dramatically. Choosing the wrong one can lead to operational inefficiencies, higher total costs, and even equipment damage. This article provides a detailed technical and procurement-oriented comparison, helping you determine which magnesium salt best meets your industrial needs. We’ll explore the critical differences in density, hygroscopicity, de-icing capability, fireproofing utility, and supply chain dynamics, with specific data points on bulk magnesium chloride flakes, the density of magnesium chloride hexahydrate, and practical answers to what is magnesium chloride used for on roads and how to make magnesium chloride.