Chromium (II) sulfate is an inorganic compound, the salt of chromium metal and sulfuric acid with the formula CrSO 4 , colorless crystals, soluble in water, forms crystalline hydrates .
| Chromium sulfate | |
|---|---|
| Are common | |
| Systematic name | Chromium (II) sulfate |
| Traditional names | Chromic sulphate |
| Chem. formula | CrSO 4 |
| Physical properties | |
| condition | colorless crystals |
| Molar mass | 148.06 g / mol |
| Chemical properties | |
| Water solubility | 10.8 g / 100 ml |
| Classification | |
| Reg. CAS number | 13825-86-0 |
| Pubchem | |
| SMILES | |
| Inchi | |
| Chemspider | |
Content
Getting
- Action on metallic chromium diluted sulfuric acid:
- {\ displaystyle {\ mathsf {Cr + H_ {2} SO_ {4} \ {\ xrightarrow {}} \ CrSO_ {4} + H_ {2}}}
- Effect on chromium (II) acetate diluted sulfuric acid:
- Recovery of acidified chromium (III) sulfate solutions with zinc :
Physical Properties
Chromium (II) sulfate forms colorless crystals, soluble in water, and aqueous solutions are stable in the absence of oxygen .
Forms crystalline hydrates of the composition CrSO 4 • n H 2 O, where n = 1, 2, 4, 5 and 7.
Under normal conditions, CrSO 4 • 5H 2 O crystalline hydrate forms — blue crystals of triclinic syngony , cell parameters a = 0.724 nm, b = 1,094 nm, c = 0.601 nm, α = 125.32 °, β = 97.63 °, γ = 94.32 °.
Chemical Properties
- Aqueous solutions absorb oxygen :
Application
- In analytical chemistry, as an oxygen scavenger.
- Catalyst and reducing agent in organic chemistry.
Literature
- Chemical Encyclopedia / Redcol .: Zefirov N.S. et al. - M .: The Great Russian Encyclopedia, 1998. - Vol. 5. - 783 p. - ISBN 5-85270-310-9 .
- Chemist Handbook / Redkol .: Nikolsky B.P. et al. - 3rd ed., Rev. - L .: Chemistry, 1971. - T. 2. - 1168 p.
- Ripan R., Chetyanu I. Inorganic chemistry. Metal Chemistry. - M .: Mir, 1972. - T. 2. - 871 p.