钠Tripolyphosphate

Sodium Tripolyphosphate Packing:25kg woven bag Specification:Food gradeAppearance White powder ITEMS SPECIFICATION Assay Na5P3O10 % ≥ 94.0 Min. P2 O 5 % ≥ 57.0 Min. Water Insoluble Matter % ≤ 0.05 Max. Iron(Fe) % ≤ 150ppm Max. PH value (1% water solution) 9.5-10.0 Heavy Metal (as Pb) %≤ 0.001 Max.(food grade) Arsenic (As) % ≤ 0.0003 Max..(food grade) Fluoride (F) % ≤ 0.003 Max..(food grade) Whiteness % ≥ 90 Min. 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 0.35-0.5g/cm 3 , medium density 0.51-0.65g/cm3 and high density 0.66-0.9g/cm 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 .