 |
 Sodium
Tripolyphosphate (STPP)---Tech 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 temperature). 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.
Packing: Plastic knit bag or kraft bag, net
weight 25kg or 50 kg. Besides, we can pack the goods according
to the requirement of the client. Store at ventilated dry
places.
Technical Specifications:
| Specifications
|
Tech
Grade |
| For
Export |
For
Domestic Market |
Main content % ≥ |
94.0 |
90.0 |
P2O5 % ≥ |
57.0 |
57.0 |
Water Insoluble Matter %≤ |
0.15 |
0.15 |
Fe % ≤ |
0.01 |
0.01 |
PH Value of 1% water solution |
9.2-10.0 |
9.2-10.0 |
Through 16 Mesh % ≥ |
95 |
95 |
Through 35 Mesh % ≥ |
90 |
90 |
Through 100 Mesh % ≥ |
40 |
40 |
Whiteness % ≥ |
90 |
85 |
|
Contact
Us:
Oversea
Dep. Tel: +86-816-2431253/4/6 Fax:+86-816-2431255
Domestic Dep. Tel: +86-816-4563135 Fax:+86-816-4563035
After Service Dep.Tel: +86-816-2332981 |
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