Usage：Used in industries of oil fields, paper production, textile, dyeing, petroleum, chemistry, metallurgy and construction materials etc. as water softener, flotation selecting agent, disperser and high temperature adhesive; In food industry it used as an additive, nourishing agent, quality improver, pH regulator, metal ions chelating agent, adhesive and leavening agent etc.
Standard:
|
Item |
Unit |
Specification | |
|
Tech grade |
Food grade | ||
|
Total phosphate as P2O5: |
% |
68 min |
68 min |
|
Inactive phosphate as P2O5: |
% |
7.5 max |
7.5 max |
|
Iron as Fe: |
% |
0.05 max |
0.05 max |
|
Ph of 1% water solution: |
- |
5.8-7.3 |
5.8-6.5 |
|
Heavy metal as Pb: |
% |
-- |
0.001 max |
|
Arsenic as As: |
% |
-- |
0.0003 max |
|
Fluoride as F: |
% |
-- |
0.003 max |
|
Water insoluble: |
% |
0.5 max |
0.05 max |
|
Whiteness |
% |
90 min |
90 min |