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Alias: Anhydrous disodium hydrogen phosphate
CAS No. :7558-79-4
Molecular Formula: Na 2 HPO 4
MW: 141.98
Character: White powder, flake or granular material. It dissolves in water and its aqueous solution is alkaline; not soluble in alcohol. Heat it up to 95 centigrade loses dihydrate and become sodium hydrogen phosphate anhydrous.
Uses: used as a water softener, fabric weight agent, fire retardant, and is used to glaze, solder medicine, pharmaceuticals, paints, food industry and manufacturing ,water treatment agent, printing and dyeing detergent, quality improver , neutralizer, antibiotics train agents, biological and chemical treatment agent of food quality improver
Quality standard(reference standard)
Specifications
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Na 2 HPO 4
(Anhydrous)
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Na 2 HPO 4 .12H 2 O (Duohydrate)
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Industrial Grade
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Food Grade
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Industrial Grade
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Food Grade
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Main contents %≥
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98
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98
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97
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97
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P 2 O 5 %≥
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49
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49
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19.2
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19.2
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PH of 1% water solution
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8.5-10.0
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8.5-10.0
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8.8-9.2
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8.8-9.2
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Chloride,as Cl % ≤
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0.05
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0.014
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Sulfate, asSO 4 %≤
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0.7
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0.25
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Heavy metals, as Pb %≤
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0.001
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0.001
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Arsenic, as As %≤
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0.0003
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0.005
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0.0003
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Fluoride, as F %≤
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0.005
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0.05
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0.005
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Water insoluble %≤
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0.1
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0.1
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0.05
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0.05
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