In British English, also called sulphate of potash, arcanite, or archaically known as potash of sulfur is a non-flammable white crystalline salt which is soluble in water. The chemical compound is commonly used in fertilizers, providing both potassium and sulfur.
- Cas No:
- 7778-80-5
- Formula:
- K2 SO4
- Molecular Weight:
- 174.26
- Character:
- White or almost white, crystalline powder or colorless crystals. Soluble in water, insoluble in alcohol.
- Packaging:
- 50 Kg. HDPE bags with polyliner inside.
- Storage:
- Store in tight container.
Available Grade & Specification
| Item | BP | FCC | CP | TER |
|---|---|---|---|---|
| Assay | NLT 98.5% to 101.0% of KH2PO4 Dried substance | NLT 99.0% & NMT 100.5% of K2SO4after drying | 98.5% | 98.5% |
| Identification | Positive | Positive | ||
| Loss on drying | 55.0% to 64.0% | 57.0%-61.0% | 57.0%-61.0% | |
| Acidity or alkalinity | Pass the test | |||
| Chloride | 40 PPM Max | |||
| Calcium | 200 PPM Max | Meets the requirement | 0.02% Max | |
| Iron | 10 PPM Max | 0.005% max | ||
| Magnesium | 0.002% | 10 PPM Max | 10 PPM Max | |
| Sodium | 0.10% Max | 0.25% Max | ||
| Heavy metals | 20 PPM Max | Max2 PPM as Pb | 0.001% Max | 0.002% |
| Loss on drying | 1.0 Max | NMT0.2% Max | ||
| pH of (1:20) | 5.5 – 8.5 | 5.5 – 8.0 | Clear & Colorless | |
| Selenium | 5 PPM Max | |||
| Water insoluble | 0.01% Max | |||
| Arsenic | 5 PPM Max | 0.001% |
Application & Industries
Pharmaceuticals
pH control
Reagent in Analytical chemistry for nitrogen determination
Cathartic