Audited Supplier
none
7778-80-5
K2so4
ISO
Not Less Than 98.5%
Potassium Sulfate
Powder
Medicine Grade
White or Almost White, Crystalline Powder
Soluble in Water
Clear and Colourless
Meets The Requirements
Bags with Pallets
25KG/BAG
Cangzhou China
3104300000
Product Description
potassium sulfate ( kalii sulfas)
chemical formula:
Molecular formula: K2SO4molecular weight:174.3
Appearance and Characteristics: Colorless or white hexagonal or rhombohedral crystalline or granular powder.
Taste: It has a bitter and salty taste.
Melting point (ºC): 400 (- H2O)
Relative density (water=1): 2.9500
Flash point: 1689 ° C
Solubility: 110 g/L (20 ºC), easily soluble in water, insoluble in ethanol, acetone, and carbon disulfide.
Flame reaction: purple (through blue cobalt glass)
Specification of potassium sulfate
| Item | Limit |
| Characters | Appearance : white or almost white, crystalline powder or colourless crystals |
| Solubility : soluble in water, practically insoluble in anhydrous ethanol. | |
| Identification |
|
| |
| Appearance | Solution S is clear and colourless |
| Acidity or Alkalinity | Not more than 0.5mL of 0.01M hydrochloric acid or 0.01M sodium hydroxide is required to change the colour of the indicator. |
| Chlorides | Not more than 40ppm |
| Calcium | Not more than 200ppm |
| Iron | Not more than 10ppm |
| Magnesium | Not more than 20ppm |
| Sodium | Not more than 0.10 per cent |
| Loss on drying | Not more than 1.0 per cent |
| Assay | 98.5 per cent to 101.0 per cent of K2SO4(dried substance) |
