Basic chromic sulfate, chromium(III) sulfate, or chromic sulfate, is a chemical compound with the formula Cr(OH)SO4. It is derived from the reaction between chromium(III) oxide (Cr2O3) or chromium(III) hydroxide (Cr(OH)3) and sulfuric acid (H2SO4). Basic chromium sulfate (Basic chromic sulfate) is primarily used in the tanning industry as a tanning agent and a leather preservative. It plays a crucial role in converting raw hides or skins into leather. The compound helps to cross-link collagen fibers, making the leather more stable, resistant to decomposition, and less susceptible to shrinkage. It also enhances the leather's ability to resist water and impart a soft texture.
Basic chromic sulfate is primarily used in the tanning industry as a tanning agent and a leather preservative. It is also employed in other applications, including:
Dyestuff and Pigment Production: It serves as a mordant, a substance that enhances the affinity of dyes or pigments for textile fibers. It helps to fix dyes onto fabrics and improve colorfastness.
Wood Preservation: Basic chromium sulfate is used as a preservative to protect timber from decay, fungal growth, and insect attacks. It is applied by pressure treatment or dipping to extend the lifespan of wood used in outdoor applications.
Corrosion Inhibition: It is sometimes used as a corrosion inhibitor in cooling water systems, particularly in the automotive and aerospace industries. It helps to prevent the formation of rust and protect metal surfaces.
