Sodium dihydrogen phosphate anhydrous, Pharmpur®, BP, USP

- Synonyms: Sodium biphosphate, Sodium phosphate monobasic
- NaH2PO4
- M = 120,0 g/mol
- CAS [7558-80-7]
- EINECS-No.: 231-449-2
- Solub. in water: (20 ºC): 850 g/l
- Melting point: 200 ºC
- LD 50 (oral, rat): 8290 mg/kg
- Tariff number: 2835 22 00 00
- Applications: analytical chemistry, laboratory reagent, in food industry (E 339), in pharma industry.

SPECIFICATIONS
assay (acidimetric, referred to dried sample): 98,0 - 100,5 %
Identification A (EP): passes test
Identification phosphates USP: passes test
Identification C (EP): passes test
Identification sodium: passes test
Identification phosphates EP: passes test
appearance of solution: clear and colourless
insoluble in water: max. 0,2 %
pH (5 %, H2O): 4,1 - 4,5
chlorides (Cl): max. 0,014 %
sulfates (SO4): max. 300 ppm
aluminium,calcium and related elements: passes test
arsenic (As): max. 2 ppm
iron (Fe): max. 10 ppm
reducing substances: passes test
loss on drying (130 ºC): max. 1,0 %
water (K.F.): max. 2,0 %