Shaanxi Shangnan County Dongzheng Chemical Co., Ltd. 
1. Appearance
Dark purple-red crystals or granules
2. Physical and Chemical Properties
Soluble in water, insoluble in alcohol, easily weathers in air.
3. Applications
Used as analytical reagent, tanning agent, mordant in dyeing and printing, photographic fixing agent, catalyst, and oxidizing electrolyte for polishing.
4. Product Information
English Name: Reagent: Potassium Chromium Sulfate
CAS No.: 7788-99-0
Molecular Formula: KCr(SO4)2•12H2O
Molecular Weight: 499.42
5. Product Categories and Quality Standards
Standard: Q/DZGY 007-2024
Quality Index | Analytical Reagent (AR) | Chemically Pure (CP) |
| Potassium Chromium Sulfate (as KCr(SO4)2•12H2O), w/% ≥ | 99.50 | 99.00 |
| Water Insolubles, w/% ≤ | 0.005 | 0.010 |
| Chlorides (as Cl), w/% ≤ | 0.002 | 0.005 |
Ammonium (as NH), w/% ≤ | 0.01 | 0.03 |
| Aluminum (as Al), w/% ≤ | 0.02 | 0.05 |
Iron (as Fe), w/% ≤ | 0.005 | 0.020 |
| Heavy metals (as Pb), w/% ≤ | 0.002 | 0.010 |
6. Packaging
25 kg paper-plastic composite bags or as per customer requirements.
7. Storage
Store in a cool, ventilated, and dry warehouse.
