English name: Potassium Sulphate
CAS RN:7778-80-5
EINECS: 231-915-5
Molecular formula:K2SO4
Molecular weight:174.24
Physical properties: density 2.662
Melting point: 1067°C
Water-solubility: 110 g/L (20°C)
Properties:It is transparent or white six squares or inclined crystal powder. Opposite density 2.662, the conversion temperature is 588℃, melting point is 1069℃, dissolving in water(it is 12g/100ml at 25℃, and 24.1g/100ml at100℃), don't be dissolve in alcoholize, acet and CO2, and it is a little bitter and salty.
Use:It is used cannonball's eliminating smoke material for the army, used medium for the dyestuff industry, used precipitator for glass industry, used laxative for the medicine, used auxiliary for the spice, used additive for food, used the checkup for serum albumen and the manufacture of news paper.
Specification:Army grade potassium sulphate WJ—1477—84
| Index name |
Standard value |
| Potassium Sulphate |
≥99.0% |
| Chloride(CL) |
≤0.002% |
| Fe |
≤0.001% |
| Ca |
≤0.03% |
| Mg |
≤0.8% |
| Water insoluble |
7±1 |
| PH value |
≤5% |
| Matters on the boult whose interspace is 90um size |
|
Note: K2SO4 for single grade rocket process the producing must all pass the boult whose interspace is 90um size.
| Index name |
Standard value |
| Potassium Sulphate |
≥98.0% |
| Oxidates(CL-) |
≤0.007% |
| Fe |
≤0.02% |
| Moisture |
≤1% |
|
