di-Sodium hydrogen phosphate dodecahydrate, Pharmpur®, Ph Eur, BP

- Synonyms: Sodium monohydrogen phosphate, Sodium phosphate dibasic
- Na2HPO4·12H2O
- M = 358,14 g/mol
- CAS [10039-32-4]
- EINECS-No.: 231-448-7
- Solub. in water: (20 ºC): ~ 218 g/l
- Melting point: 35 ºC
- LD 50 (oral, rat): 17000 mg/kg (anhydrous substance)
- Tariff number: 2835 22 00 00
- Applications: analytical chemistry, in buffer solutions (phosphates), in porcelain industry, cosmetics,
pharmaceutical and food industries, in pharma industry.

SPECIFICATIONS
assay (acidimetric): 98,5 - 102,5 %
Identification A: passes test
Identification C: passes test
Identification D: passes test
appearance of solution: passes test
chlorides (Cl): max. 200 ppm
sodium dihydrogenphosphate (NaH2PO4): max. 2,5 %
sulfates (SO4): max. 500 ppm
arsenic (As): max. 2 ppm
iron (Fe): max. 20 ppm
reducing substances: passes test
loss on drying (130 °C, 4 h) : 57 - 61 %