sodium tripolyphosphate 1.industrial grade and food grade 2.Fast delivery and competitive price 3.High quality
Sodium Tripolyphosphate (STPP94%)
Molecular formula: Na5P3O10;Molecular weight: 367.86CAS No.: 7758-29-4;
H.S CODE: 2835.3100Specifications:No | Specification | Industrial grade | Food grade | ||
1 | Main content %≥ | 96.0 | 94.0 | 90.0 | 96.0 |
2 | P2O5 %≥ | 57.0 | 57.0 | 56.5 | 57.0 |
3 | Water insoluble %≤ | 0.1 | 0.1 | 0.15 | 0.05 |
4 | Iron, as Fe %≤ | 0.007 | 0.015 | 0.025 | 0.005 |
5 | pH of 1% water solution | 9.2-10.0 | 9.2-10.0 | 9.2-10.0 | 9.5-10.0 |
6 | Heavy metal, as Pb %≤ | - | 0.001 | ||
7 | Arsenic, as As %≤ | - | 0.0003 | ||
8 | Fluoride ,as F %≤ | - | 0.003 | ||
9 | Chloride, as Cl %≤ | - | 0.025 |
2)Tanning agent for leather making, auxiliary for dyeing; 3)As an effective dispersion agent for suspensions of coatings, kaolin, magnesium oxide, calcium carbonate and drilling mud etc; 4) For ceramics manufacture.
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sodium tripolyphosphate(STPP)