Tri Sodium Phosphate-Dodecahydrate - Industry Application Phosphat - China Yeyuan Chemical Raw Material Supplier - PVC - P...

Tri Sodium Phosphate-Dodecahydrate

Chemical formula: Na3PO4. 12H2O

Molecular weight: 380.12

CAS Number: 10101-89-0

Standard: HG/T2517-2009

Other Name: Sodium Phosphate Tribasic

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Performance and Usage

White or colorless crystals, efflorescent in air, easily soluble in water but not in organic solution. Its water solution is alkaline. PH value of 1% solution is 12.1, relative density at 1.62g/cm3, melting point is 73.4 ℃.

Used as a water softening agent, cleaning agent in electroplating, color fixer in fabric dyeing and flux in enamel ware manufacturing and so on.

Quality Specification

No	Specifications	National Standard	Standard
1	Assay % ≥	98.0	98.5 Min
2	P₂O₅ %≥	/	18.3
3	Sodium oxide, as Na₂O	/	15.5-19
4	Sulfate, as SO₄ % ≤	0.5	0.3
5	Heavy metal, as Pb% ≤	/	0.005
6	Arsenic, as As% ≤	0.005	0.005 Max
7	Fluoride as F% ≤	/	0.005 Max
8	Water insoluble% ≤	0.1	0.1 Max
9	Pb % ≤	/	0.003
10	Cl % ≤	0.4	0.3
11	Fe % ≤	0.01	0.008
12	PH(10g/L solution)	11.5—12.5	11.5—12.5
13	Loss on drying % ≤	/	45–57