Chrome Sulphate

FORMULA	:	Cr2(SO4)3.12 H2O
ORIGIN	:	Turkey/China
PACKING	:	25kg/bag
APPLICATION	:	Used in leather and surface treatment and plating ....

Short description

Formula: Cr2 (SO4) 3 Molecular weight: 392.16 g / mol Melting point: 90 ° C Density: 3.1 g / cm³ ID ChemSpider: 21241287 CID PubChem: 24930 Three chromium(III) sulfates are well characterized: Anhydrous chromium(III) sulfate, Cr2(SO4)3, (CAS #10101-53-8) is a violet solid that dissolves in water upon addition of a reducing agent, which generates chromium(II) sulfates. Hydrated chromium(III) sulfate, Cr2(SO4)3.18H2O, (CAS #13520-66-6) is a violet solid that readily dissolves in water to give the metal aquo complex, [Cr(H2O)6]3+. The formula of this compound can be written more descriptively as [Cr(H2O)6]2(SO4)3.6H2O. Six of the 18 water molecules in this formula unit are water of crystallization. Hydrated chromium(III) sulfate, Cr2(SO4)3.15(H2O), (CAS #10031-37-5) is a green solid that also readily dissolves in water. It is obtained by heating the 18H2O material above 70 °C. Further heating yields the anhydrous sulfate. A variety of other chromium(III) sulfates are known, but also contain hydroxide or oxide ligands. Most important commercially is basic chromium sulfate, which is thought to be [Cr2(H2O)6(OH)4]SO4 (CAS#39380-78-4). It results from the partial neutralization of the hexahydrates. Other chromium(III) hydroxides have been reported.