Chromium potassium sulfate

Also known as chrome alum and chrome potash alum, CrK(S04)2·12H20 is dark, violet-red crystals that are efflorescent and soluble in water. Derived by reducing potassium dichromate in dilute sulfuric acid with sulfurous acid. Used in tanning(chrome-tan liquors), textile dye(mordant), photography (fixing bath)and ceramics. Chromium potassium sulfate is a crystalline compound whose color may range from violet-red to black

The industrial production method of chromium potassium sulfate can adopt organic matter reduction method and sulfur dioxide reduction method. Organic matter reduction method After dissolving 99% potassium dichromate and 98% sulfuric acid in the theoretical amount of chromium alum mother liquor, slowly add wood chips for reduction under stirring. The reaction temperature is controlled not to exceed 80°C. After the reaction is completed, the crystal is left to stand slowly. After centrifuging to separate the mother liquor, the crystal is washed with a small amount of cold water and dried at a low temperature to obtain a finished product of chromium potassium sulfate. Its 2K2Cr2O7+8H2SO4+40H2O+3C → this product +3CO2↑ mother liquor and washing liquid return to the reactor to dissolve potassium dichromate.

Tanning (chrome-tan liquors), textile dye (mordant), photography (fixing bath), ceramics.

Molecular Weight:283.22
Hydrogen Bond Acceptor Count:8
Exact Mass:282.807670
Monoisotopic Mass:282.807670
Topological Polar Surface Area:177
Heavy Atom Count:12
Complexity:62.2
Covalently-Bonded Unit Count:4
Compound Is Canonicalized:Yes