Sodium hexametaphosphate, EssentQ®

- Synonyms: Sodium polyphosphate, Graham's salt
- Na-(NaPO3)n-ONa
- CAS [68915-31-1]
- EINECS-No.: 272-808-3
- Solub. in water: (20 ºC): soluble
- Melting point: 628 ºC
- LD 50 (oral, rat): 5000 mg/kg
- Tariff number: 2835 39 00 00
- Applications: dentifrices, polishing agent, detergent (abrasive).

SPECIFICATIONS
assay (acidimetric, as P2O5) : 65 - 70 %
insoluble in water: max. 0,01 %
chlorides (Cl): max. 0,03 %
sulfates (SO4): max. 0,1 %
arsenic (As): max. 2 ppm
iron (Fe): max. 0,01 %
copper (Cu): max. 0,0025 %
lead (Pb): max. 0,0025 %
nickel (Ni): max. 0,0025 %