sodium tripolyphosphate(STPP)

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

Usage:1) as one of the main auxiliaries for synthetic detergent, synergist for soap; water softener;

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)