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【 Molecular formula 】 K2Cr2O7
【 Molecular weight】294.1846
【 CAS NO.】7778-50-9
【 Characterization】orange red crystals or powder, density: 2.676 g / cm ³， MP: 398c, not hygroscopic; Soluble in water, insoluble in alcohol; Toxic, strong oxidants, contact with organic matter, friction, impact energy causes combustion.
【 Use 】 in industries such as leather, matches, dyeing, chemistry, electroplating.
[package] the 25 kg, 50 kg reinforced compiled bag lined plastic bag package.
【 Notes 】
1. Care should be taken to protect from moisture, heat, impact prevention, and away from flammable materials when storing.
2. Do not mix with foods or strong reducing agents.
3. Avoid contact with eyes, skin.
4. Personal protective equipment should be worn with a self-administered respirator, acid resistant rubber gloves, gowns, boots, and chemical safety protective eyewear.
5. If divulged, treatment with 10% sulfuric acid and ferrous sulfate reduction, lime neutralization should be taken quickly.ardant.
【 Executive criteria】GB 28657-2012
Project | Indicators (%) | ||
Superior products (%) | First class (%) | Qualified products (%) | |
K2Cr2O7 | ≥99.7 | 99.5 | 99 |
Chlorine (Cl) | ≤0.05 | 0.05 | 0.08 |
Water insoluble | ≤0.02 | 0.02 | 0.02 |
Sulfate (calculated as SO42-) | ≤0.02 | 0.05 | 0.05 |
water content | ≤0.03 | 0.05 | 0.05 |
Na+ | ≤0.5 | 1 | 1.5 |
Manufacturing
