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SODIUM TRIPOLYPHOSPHATE (STPP)

---Tech Grade & Food Grade

Standard Executed: GB9983-88
Molecular Formula: Na5P3O10
MW: 367.86

Description:

Byname is Pent-sodium Phosphate.

It is white powder.

Melting point is 622°C.

It is easily soluble in water.It has salient chelating capacity to ions of Ca, Mg etc.

It can soften the hard water to make suspension become into the clear solution.

It has weak alkalinity but no corrosiveness. It is a surfactant which has outstanding

emulsification for lubricants and fat. It has different bulk density, i.e. low density

0.35-0.5g/cm3, medium density 0.51-0.65g/cm3 and high density 0.66-0.9g/cm3.

This product has two kinds of crystalline forms, namely Type I (the type of high

temperature) and Type II (the type of low emperature). The chemical characters of

the two types are the same, and the difference between them lies in the thermo

stability



Usage:

It is used as one of the main auxiliaries agent for synthetic

detergent, synergist for soap.Softener for water in industry.

Tanning agent for making leather.An effective dispersion

agent for suspension treatment of painting, kaolin, magnesium

oxide, calcium carbonate and drilling mud etc.Resistance

agent of the oil contamination in paper production.

Specification :

NO

SPECIFICATIONS

TECH GRADE

FOOD GRADE

1

Main content

94.0% min

95.0% min

2

P2O5

57.0% min

57.0% min

3

PH of 1% solution

9.2---10.0

9.5---9.9

4

Iron,as Fe

0.01% max

0.005% max

5

Water insoluble

0.10% max

0.10% max

7

Arsenic as As

 

0.0003% max

8

Heavy metals as Pb

 

0.001% max

9

Cl

 

0.5% max

10

Bulk density

0.45-0.65g/cm3
0.90-1.05g/cm3

 

11

Phase

21-30

 

Package :

A) 25KG PER WOVEN BAG.
It can be loaded 24.8MTS per 20'ft container without pallets & limitation
It can be loaded 22-23MTS per 20'ft container with pallets & limitation

We can supply 1000MTS STPP per month.I am so glad to receive your inquiries
and we will offer you as soon as possible.

STPP