Technical Data Sheet

Sodium Tripolyphosphate (STPP)

Formula: Na5P3O10

Molecule Weight:  367.86

Description:  White powder. Appearance density 0.35-0.90g/cm3. Melting point 622ºC. Easily soluble in water and its aqueous solution is alkalinity. The PH value for 1% solution is 9.7       

Specification:

                                 Food Grade                  Tech Grade

Content                    95%Min                      94% Min

P2O5                       57% Min                      57% Min

Phase I                      -----                            5-40

Phase II                     -----                          95-60

Fluoride                 0.003%Max                       ----

As                      0.0003% Max                       ----

Heavy metal          0.001% Max                       ----

Water Insoluble        0.03%Max                  0.1% Max

Ph                            9.2-10                         9.2-10

Whiteness                90%Min                      90% Min

Uses: Mainly to synthesis detergent. In industry, it is to soften water. STPP has also strong emulsification to fat and lubricant. It is also used as soften agent for canned food, juice drink etc.

Packing: In 25 kgs plastic woven bags with plastic bag lined.