Please see below for details of STPP

STPP Properties:
1. Appearance: white microdot powder with luster;
2. Melting point: 622 degree centigrade;
3. Solubility: easily soluble in water, with remarkable chelating ability to some metal ions such as Ca2+, Mg2+;
4. pH: slightly alkaline;
5. Without causticity.

Technical Specifications of STPP:
Technical grade:
(1)Appearance: White powder
(2)Main content: 94.0% min.
(3)P2O5: 57.0% min.
(4)pH of 1% water solution: 9.2-10.0
(5)Iron, as Fe: 0.015% max.
(6)Water insoluble: 0.1% max.
(7)Density: 0.7-1.0 g/cm3


Application:
1. Used as main auxiliary of synthetic wash, soap synergistic agent, water softener, leather pre-tanning agent, dye auxiliary agent, as dispersant of suspension such as paint, kaolin, magnesium oxide, calcium carbonate drilling mud, and as preservative agent for paper making, organic synthesis catalyzer;
2. Used in epuration of petroleum product, gum latex storage, as dispersant, solvent in metal industry and pharmaceutical industry;
3. Also widely used in gum synthesis, foodstuff industry, and poultry process.