Chemical formula: Na3PO4
CAS Number: 7601-54-9
Standard executed: Tech grade (HG/T 2517-1993)  Food grade(National standard) 
Packing and storage:
In 25kg, 50kg, 1000kg net bags, store at a cool, dry and well ventilated place.

Specifications  Food  grade 
Appearance  white powder
Main contents% ≥ 98.0
Phosphorus pentoxide (P2O5)%≥ 39.5
Sodium oxide, as Na2O 36-40
Sulfate, as SO4 % ≤ 0.25
PH of 1% water solution 11.5-12.1
Heavy metal, as Pb 10ppm
Arsenic, as As  3ppm 
Fluoride as F  50ppm
Water insoluble% ≤ 0.10 

We can also supply industrial grade TSP
welcome to contact us at anda1002(at)gmail(dot)com