Sodium Tripolyphosphate (STPP)

Sodium Tripolyphosphate (STPP)

CAS No.7758-29-4

EINECS No. 231-838-7

 

Specification of Technical Grade:

Purity (Na5P3O10): 94%Min

Phosphate (P2O5) in dry sample: 57%Min

Water Insoluble Matter: 0.10%Max

Iron (Fe): 0.007%Min

PH value (1% solution): 9.2~10.0

Whiteness: 90%Min

Residues through 1mm sieve: 5.0%Max

Apparent density: 0.35~0.99g/cm3

Na4P2O7: 5.50%

 

Specification of Food Grade:

Purity: 95%Min

Phosphorus Pentoxide (P2O5): 57%Min

Fluoride (F): 0.003%Max

Arsenic (As): 0.0003%Max

Lead (Pb): 0.001%Max

Chloride (Cl): 0.025%Max

Sulphate: 0.4%Max

Water Insoluble Matter: 0.05%Max

PH Value (1% water solution): 9.5-10.0

Whiteness: 85Min

 

Packing: 25/50kgs p.p. woven bags net each, 20-22MTs per 20'FCL