Sodium Tripolyphosphate(STPP)-E451(I)

Molecular formula: Na5P3O10

Molecular Weight: 367.86

CAS Number: 7758-29-4

Other Name: STPP

National Standard:GB 25566-2010

INS.: E451(I)

In 25Kg,50 Kg,1000 Kg bage.store at a cool,dry and well ventilated place.

Specifications：

NO .	Item	Specification
1	AssayNa₅P₃O₁₀% ≥	95.0
2	P₂O₅ % ≥	57.0
3	Water Insoluble Matter %≤	0.05
4	Iron(Fe) %≤	0.01
5	PH value(1%water solution)	9.5-10.0
6	Heavy Metal (as Pb) %≤	0.001
7	Arsenic (As) %≤	0.0003
8	Fluoride (F) %≤	0.003
9	Particle Size Power: Through 16 mesh sieve %≥ Through 35 mesh sieve %≥ Through 100 mesh sieve %≥ Fine power: Through 100 mesh sieve %≥	95 90 40 90
10	Whiteness %≥	90.0
11	PHASAE I CONTENT	15--40

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