Sodium Tripolyphosphate(STPP),China Tianrui price supplier

Chemical formula: Na ₅ P ₃ O ₁₀
Molecular weight: 367.86
CAS NO.: 7758-29-4
Ref. Standard: GB/T9983-2004(industrial grade); QB1034-91(food grade)
production capacity: 3000 t/a
Properties: White microdot powder with luster, melting point at 622 a?? , easily soluble in water, with remarkable chelating ability to some metal ions such as Ca2+, Mg2+, can soften hard water, change suspension into solution, slightly alkaline, without causticity. Bulk dencity 0.4~1.0g/cm3
Technical Specifications:

No.	Index	Industrial Grade	Food Grade
1	Main content %≥	95.0	95.0
2	P 2 O 5   %≥	57.0	57.0
3	Iron, as Fe  %≤	0.015	0.01
4	pH of 1% water solution	9.2-10.0	9.5-10.0
5	Water insoluble %≤	0.1	0.05
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

Applications: Used as main auxiliary of synthetic wash, soap synergistic agent, water softener, leather pre-tanning agent, dye auxiliary agent, and dispersant of suspension such as paint, kaolin, magnesium oxide, calcium carbonate drilling mud, preservative agent for paper making, organic synthesis catalyzer, and used in epuration of petroleum product, gum latex storage, as dispersant, solvent in metal industry and pharmaceutical industry, also widely used in gum synthesis, foodstuff industry, and poultry process.
Packaging:  packed in plastic woven bag with PE lining, 25kgs/bag. Stored in ventilated and dry place.