Properties:
1. Appearance: white or yellow powder;
2. Solubility: soluble in water easily, but not in organic solvent;
3. pH: water solution is alkaline, and pH of 1% water solution is12.1;
4. Relative density: 2.537;
5. Melting point: 134 degree centigrade.
Technical Specification:
1.Industrial grade:
(1)Appearance: White powder
(2)Main content: 98.0% min.
(3)Na2O: 36-40%
(4)P2O5: 42.4% min.
(5)pH of 1% water solution: 11.5-12.5
(6)Water insoluble: 0.1% max.
(7)Sieve test(Through 60 mesh): 90.0% min.
2.Food grade:
(1)Appearance: White powder
(2)Main content: 98.0% min.
(3)Na2O: 36-40%
(4)P2O5: 42.4% min.
(5)pH of 1% water solution: 11.5-12.5
(6)Water insoluble: 0.1% max.
(7)Arsenic, as As: 0.0003% max.
(8)Fluoride, as F: 0.002% max.
(9)Heavy metal, as Pb: 0.001% max.
(10)Sieve test(Through 60 mesh): 90.0% min.
Application: Used as water softening agent for boiler, cleaning agent in electroplating, etc.
Packing: Plastic-woven sack with polythene inner bag. Net weight: 25kg or 50kg or 1000kg. Stored in ventilated and dry place.
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