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Sodium Tripolyphosphate (STPP)

 

[ Catalog for Tech Grade ]

 

1. Standard Executed: (GB/T9984-2008)
2. Molecular Formula: Na₅P₃O₁₀
3. MW: 367.86
4. 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. 
   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
5. 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£¬ ceramic application
6. Packing: Plastic knit bag, net weight 25kg Besides, we can pack the goods according to the requirement of the client. Store at ventilated dry places.
7. Technical Specifications

Technical Specifications:

Specifications	Tech Grade
	For Export
Main content % ≥	94.0
P2O5 % ≥	56.5
Water Insoluble Matter %≤	0.10
Fe % ≤	0.015
PH Value of 1% water solution	9.2-10.0
Whiteness ≥	85%
Density	0.4—1.0G/CM3
Solubility	Soluble in water