CAS No: 7558-79-4 10039-32-4
Molecular Formula: Na 2H PO4 12 H 2O
Molecular Weight: 358.14
Characteristics: colorless hyaline crystal of monoclinic system, relative density is 1.52,easy efflorescence in air easy to lose Five molecular gesso turn to seven water content(Na2HPO4.7H2O), soluble in water, insoluble in alcohol water solution slightly alkaline reaction( 0.11 N fluid PH is about 9.0), It becomes anhydride after dehydration in 100℃, decomposes into sodium pyrophosphate when 250 ℃ .
Application: Apply to Boiler soft agent, retardant of textile, Wood and paper fire, glaze and welding flux. used in Production detergent, Printing detergents, mordant dyeing.Used for hydrogen peroxide bleaching stabilizater in printing ,dyeing , electrofacing, tanning.Rayon packing(Enhancement silk strength and elastic),Manufacturing focal sodium and phosphate materials,MSG, ERY, penicillin, chain mildew and wastewater biochemical treatment mediums.
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Name of index
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Index
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high-class product
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first-rate product
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qualified product
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NaH 2PO4 H 2O value% ≥
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97.0
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96.0
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95.0
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Sulfate value(ddd)%≤
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0.7
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1.2
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0.80
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chloride content (CI)%≤
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0.05
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0.1
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0.50
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water insoluble%≤
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0.05
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0.10
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0.30
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AS value%≤
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0.005
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0.005
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15.5-19.0
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chloride content(F)%≤
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0.05
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0.05
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0.01
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PH value %≤
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9.0±0.2
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9.0±0.2
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0.05
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