Sodium triply phosphate (STPP)

Product description


Product Description




Specifications



Sodium triply phosphate (STPP)

94%MIN

BEST QUALITY

H.S No.: 2835310000



Byname: Pent-sodium Phosphate
CAS No.: 7758-29-4

H.S No.: 2835310000 
Molecular formula: 
Na5P3O10 
Molecular Weight: 
367.86

 

Standard executed : GB9983-88

Properties: 
White powder; Melting point 622oC ; Easily soluble in water; It has got salient chelating capacity to ions of Ca and Mg etc. and can soften hard water to make suspension solution become into clear solution; It has got weak alkalinity but no corrosiveness. It is a surfactant, and has got outstanding emulsification to lubricants and fat. It has different bulk density, i.e. low density 0.35-0.5 g/cm3 , medium density 0.51-0.65 g/cm3 and high density 0.66-0.9 g/cm3 . This product has two crystalline forms, namely Type I (high temperature type) and Type II (low temperature type). The chemical properties of the two types are the same, and the difference between them lies in the thermostability, hygroscopicity, solubility and hydration heat when dissolving .

Usage: 
Used as one of the main auxiliaries for synthetic detergent, synergist for soap; water softener, tanning agent for leather making, auxiliary for dyeing; As an effective dispersion agent for suspension solutions of coatings, kaolin, magnesium oxide, calcium carbonate and drilling mud etc.; 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.

Package and storage: In 25Kg or 50 Kg or 1000 Kg net WPP/PE bags. It must be prevented from Dampness and water. Don't store it in the open air.

Specification

Item

Industrial Grade index

Food Grade index

For Export

For Domestic Market

Assay Na5P3O10 %

94.0min

90.0min

94.0min

P2O5 %

57.0min

57.0min

57.0min

Water Insoluble Substance %

0.15max

0.15max

0.05max

Iron(Fe) %≤

0.01max

0.01max

0.01max

PH value (1% water solution)

9.2-10.0

9.2-10.0

9.5-10.0

Heavy Metal (as Pb) %

  

0.001max

Arsenic (As) %

  

0.0003max

Fluoride (F) %

  

0.003max

Particle Size 
Through 16 mesh sieve % 
Through 35 mesh sieve % 
Trough 100 mesh sieve %

95min 
90min 
40min

95min 
90min 
40min

95min 
90min 
40min

Whiteness %≥

90

85

90

 




Previous:ammonium persulfate

Next:sodium perborate

Company profile

Hainan Huarong Chemical Co., Ltd.

Learn more

Recommended products

Contact Now