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
|
|
