Shifang Hongyu Chemical Co., Ltd

Products

	Sodium Tripolyphosphate (STPP)

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Purity

94% 95%

Sodium Tripolyphosphate (STPP)

[Chemical Formula] Na₅P₃O₁₀

[Molecular Weight] 123.89

[Executive standard] GB9983-2004, QB1034-91

[Property] White powder, surface density: 0.35-0.9g/cm3, melting point:622â, free soluble in water,aqueous solution appears acid. It is a kind of inorganic surface active agent.

[Use] one of the main auxiliaries for synthetic detergent, synergist for soap; water softener, tanning agent for leather making, auxiliary for dyeing; As an oil contamination resistance agent in paper production. In foodstuff industry it is used as quality improver in the process of canned food, fruit juice drinks, foodstuffs from milk or soybeans. It may tender the meat in canned ham and soften the skin of horse bean in canned horse bean. It may also serves as a softener or densifier in foodstuff industry.

[Technical Specifications]

No.	Index	Industrial	Food Grade
1	Assay Na 5 P 3 O 10 % ≥	94.0-96.0	94.0-95.0
2	P 2 O 5 % ≥	57	57
3	Water Insoluble Matter % ≤	0.15	0.05
4	Iron(Fe) % ≤	0.015	0.015
5	PH value (1% water solution)	9.2-10.0	9.5-10.0
6	Heavy Metal (as Pb) % ≤	ã	0.001
7	Arsenic (As) % ≤	ã	0.0003
8	Fluoride (F) % ≤	ã	0.003
9	Chloride(Cl) % ≤	ã	0.025
10	Sulphate(SO4)% ≤	ã	0.4
11	Whiteness % ≥	90	90
12	Ignition loss	1	ã
13	density (g/cm 3 )	0.35-0.9	0.35-0.9
14	Particle Size( 1.00mm ) % ≥	95	95