Shaanxi Shangnan County Dongzheng Chemical Co., Ltd. 
1. Appearance
Orange-red crystals or powder.
2. Physical and Chemical Properties
Density: 2.676 g/cm³,Melting point: 398ºC,Non-hygroscopic, soluble in water, insoluble in alcohol, it is a strong oxidizer and may cause combustion upon contact, friction or impact with organic matter.
3. Application
It is used in leather, matches, printing and dyeing, chemical, electroplating, and other industries.
4. Product Information
English Name: Potassium Dichromate
CAS Number: 7778-50-9
Molecular Formula: K₂Cr₂O₇
Molecular Weight: 294.1846
5. Product Categories and Quality Standards
Standard: GB28657-2012
Quality Index | Specification | ||
Premium Grade | First Grade | Qualified Grade | |
| Potassium Dichromate (as K₂Cr₂O₇), w/% ≥ | 99.80 | 99.50 | 99.00 |
Chlorides (as Cl), w/% ≤ | 0.03 | 0.05 | 0.07 |
| Water-insoluble matter, w/% ≤ | 0.01 | 0.02 | 0.05 |
Sulfates (as SO₄²⁻), w/% ≤ | 0.02 | 0.05 | 0.05 |
| Moisture, w/% ≤ | 0.03 | 0.05 | 0.05 |
Sodium ion (as Na⁺), w/% ≤ | 0.40 | 1.00 | 1.50 |
6. Packaging
25kg paper-plastic composite bag or customer specifications.
7. Storage
During storage and transportation, protect against moisture, heat, and physical impact. Maintain shock-resistant packaging. Store remotely from flammables. Shall not be co-stored with foodstuffs or strong reducing agents. In the event of a leakage incident, treat with 10% sulfuric acid solution followed by ferrous sulfate reduction and neutralize residual liquid with calcium hydroxide slurry.
