Sodium Hexametaphosphate

DiSodium Phosphate 1.anhydrous/dodecahydryte 2. water soluble 3. best quality and competitive price Specifications

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Molecular formula: NaH2PO4.2H2O

Molecular weight: 156.01

Properties: Colourless oblique square crystal, relative density is 1.91, melting point is 60 centigrade. It is soluble in water and insoluble in ethanal. its aqueous solution shows acidity, It is easy to agglomerate in the watery air., It becomes sodium dihydrogen phosphate anhydrous at 95 centigrade, sodium pyrophosphate anhydrous at 190-204 centigrade, sodium metaphosphate  at 204 –244 centigrade.

Specification:(reference standard)

items	unit	standard
		technical grade	food grade
NaH2PO4.2H2O	%≥	98.00	98.00
P2O5	%≥	44.60	44.60
Methyl orange basicity(Na2O)	%≥	18.8-21.0	19.40
pH(1% solution)	--	4.2--4.6
Chlorid (Cl-)	%≤	0.4	0.014
Fe	%≤	0.10	0.05
As	%≤	0.005	0.0005
Heavy metal (Pb)	%≤	0.005	0.002
Fluorid (F)	%≤	--	0.005
Sulfate (SO42-)	%≤	0.5	0.25
Water insolubles	%≤	0.1	0.1

Sodium Hexametaphosphate