Calcio solfato diidrato, Pharmpur®, Ph Eur, BP, NF

- Synonyms: Sulfuric acid calcium salt dihydrate
- CaSO4·2H2O
- M = 172,17 g/mol
- CAS [10101-41-4]
- EINECS-No.: 231-900-3
- Solub. in water: (20 ºC): ~ 2 g/l
- Tariff number: 2833 29 90 00
- Applications: analytical chemistry, laboratory reagent, in building materials, synthesis of organic products, for pharmaceutical use.

SPECIFICATIONS
assay (complexometric): 98,0 - 102,0 %

dried sample): 98,0 - 101,0 %
Identification sulfates: passes test
Identification calcium: passes test
acidity or alkalinity: passes test
chlorides (Cl): max. 300 ppm
arsenic (As): max. 10 ppm
iron (Fe): max. 100 ppm:
loss on ignition (800 °C): 18,0 - 22,0 %
loss on drying (250 °C): 19,0 - 23,0 %