Disodium Phosphate (DSP)

Molecular formula: Na2HPO4.XH2O(X=0,12) Molecular weight: 358.0 Voluntary Standard: HG/T2767-1996

Properties: White powder, or colorless sand-form crystal. Easily soluble in water, but insoluble in alcohol, its water solution is weak alkaline. Twelve-hydrate disodium phosphate's specific gravity is 1.52, and melting point is 34.6 . Disodium phosphate's dihydrate to seven-hydrate are generated after anhydrous disodium phosphate is absorbing water from moist air.Uses:Used as fire retardant of textile, wood, and paper, water softening agent of boiler, dyeing agent, buffering agent, glaze agent, welding agent, and auxiliary agent in electroplating and leather tanning etc. It is used to produce baking powder and sodium pyrophosphate. In food industry, it is used as quality improver, emulsifier, and nourish-supplement agent, fermentation adjunct, and binder. Packing and storage: In double layer bags of net weight of 25 Kg or 50 Kg, store at a cool, dry and well-ventilated place. Specifications:

No.	Item	Na2HPO4		Na2HPO4.12H2O
		Industrial Grade	Food Grade	Industrial Grade	Food Grade
1	Assay %≥	98.0	98.0	97.0	97.0
2	PH (1% water solution)	8.5-10.0	8.5-10.0	8.8-9.2	8.8-9.2
3	Sulfate, as SO4 %≤			0.7	0.25
4	Heavy metals, as Pb %≤		0.001		0.001
5	Arsenic, as As %≤		0.0003		0.0003
6	Fluoride, as F %≤		0.005		0.005
7	Water insolubles %≤	0.10	0.10	0.10	0.10

Disodium Phosphate (DSP)