Potassio solfato, Pharmpur®, Ph Eur, BP

- Synonyms: Sulfuric acid potassium salt
- K2SO4
- M = 174,27 g/mol
- CAS [7778-80-5]
- EINECS-No.: 231-915-5
- Solub. in water: (20 ºC): 110 g/l
- Melting point: 1069 ºC
- Boiling point: 1689 ºC
- LD 50 (oral, rat): 6600 mg/kg
- Tariff number: 3104 30 00 00
- Applications: analytical chemistry, laboratory reagent, for determination of: nitrogen (Kjeldahl), in fertilizer compositions, manufacture of glass.

SPECIFICATIONS
assay (acidimetric, referred to dried sample): 98,5 - 101,0 %
Identification potassium: passes test
Identification sulfates: passes test
appearance of solution: clear and colourless
acidity or alkalinity: passes test
chlorides (Cl): max. 40 ppm
calcium (Ca): max. 200 ppm
iron (Fe): max. 10 ppm
magnesium (Mg): max. 20 ppm
sodium (Na): max. 0,10 %
loss on drying (130 ºC): max. 1,0 %