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Sodium Tripolyphosphate (STPP) 94%

Sodium Tripolyphosphate (STPP) 94%

Product: Sodium Tripolyphosphate (STPP)

Formula: Na5P3O10

Molecular Weight: 367.86

H.S.CODE: 28353100

CAS NO.: 7758-29-4

Standard: GB9983-88

Properties: White powder; Melting point 622˚C;
Easily soluble in water; It has got salient chelating capacity to metal ions of
Ca and Mg etc. and can soften hard water to make suspension into solution, alkalinity,
without causticity. It is a surfactant, and has got outstanding emulsification
to lubricants and fat. It has different bulk density, i.e. low density
0.3-0.5g/cm3, medium density 0.51-0.65g/cm3 and high
density 0.66-0.9g/cm3. This product has two crystalline forms,
namely phase I (high temperature phase) and phase II (low temperature phase).
The chemical properties of the two phases are the same, and the difference
between them lies in the thermostability, hygroscopicity, solubility and
hydration heat when dissolving.

Application: Main part being used as sapide helps the agent,
soap synergist, water softener, processes hides giving tanning agent, dyeing an
assistant, the effective powder that suspension liquid sells at reduced prices
such as paint , advanced age soil, magnesia, calcium carbonate lama, makes
paper using the greasy dirt aseptic , organic synthesis catalysator.

Packing: 25kg/pp bag

Loading capacity: 26MT/20’FCL

Specification :

Item

Industrial

Assay Na5P3O10%

94.0

P2O5%

57.0

WaterInsoluble Matter %

0.10

Iron(Fe) %

0.01

PHvalue (1%watersolution)

9.2-10.0

Na2O

41%

Salinity

2-3%

Ignitionloss

1.0

density (g/cm3)

 0.35-0.9