Product Details

Specifications

Sodium Hexametaphosphate
1.anhydrous/dodecahydryte
2. water soluble
3. best quality and competitive price

Specifications

we specialized in this field for decades ,with high quality and pretty competitive price

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
items	unit	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 (SO₄^2-)	%≤	0.5	0.25
Water insolubles	%≤	0.1	0.1