Detergent & Ceramic Industry Stpp Supplier 7758-29-4

We are offering Sodium Tripolyphosphate 94% (STPP)
 
Byname:Pent-sodium Phosphate
CAS No.:7758-29-4
EINECS No.:231-838-7
HS code:2835310000
Molecular formula:Na5P3O10
Molecular Weight:367.86
Standard executed :GBT9983-2004
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 0.35-0.5gcm 3 , medium density 0.51-0.65gcm3 and high density 0.66-0.9gcm 3 . 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 .
Specification:
TESTING CONTENTS ANALYSIS
NO. Item Index
1 Appearance White granulate
2 Assay Na5P3O10 % ≥ 94%
3 P2O5 % ≥ 56
4 Water Insoluble Matter % ≤ 0.10
5. Iron(Fe) % ≤ 0.01
6 pH value (1% water solution) 9.2-10.0
 
Used as one of the main auxiliaries for synthetic detergent, synergist for soap; water softener, tanning agent for leather making, auxiliary for dyeing; As an effective dispersion agent for suspensions of coatings, kaolin, magnesium oxide, calcium carbonate and drilling mud e