Description
Tech Grade:
Total phosphate, as P2O**********- *8.0% min
Inactive phosphate, as P2O5 ******7.5% max
Iron, as Fe ******************************0.*5% max
pH of 1% water solution ***************5.**7.3
Solubility*******************************- Qualified
Water insoluble *********************0.*5% max
Food Grade:
Total phosphate, as P2O**********- *8.0% min.
Inactive phosphate, as P2O5 ******7.5% max.
Iron, as Fe ******************************0.*5% max.
pH of 1% water solution ***************5.**6.5
Solubility*******************************- Qualified
Heavy metal, as Pb*******************0.**1% max.
Arsenic, as As *************************0.***3% max.
Fluoride, as F***************************0.**3% max.
Water insoluble ***********************0.*6% max.
Property:
1. Appearance: White powder;
2. Relative density: 2.**4 (*0 degree centigrade);
3. Solubility: Easily soluble in water, but not in organic
solution;
4. Absorbent to dampness, and turn sticky when absorbed dampness in
air;
5. Can form soluble chelate with metallic ions such as Ca, Ba, Mg,
Cu and Fe
Use:
1. Technical grade: Used in such industries as oil field,
paper-making, textile, dyeing, petrochemical industry, tanning
industry, metallurgical industry and building material industry,
and used as a water softening agent in solution for printing,
dyeing, and boiler, as diffusant in papermaking; Retarding agent,
floating agent, dispersing medium, high temperature agglomerant,
detergent and soil analytical chemical reagent;
2. Food grade: Mainly used as additive agent, pH adjusting agent,
fermenting agent, and nourishment, etc.
