• Mazhen Town, North Wuxi, Jiangsu Province, China

Sodium Pyrophosphate (TSPP)


  • Sodium Pyrophosphate (TSPP)



    CAS No:7722-88-5



    Main content: 96.5%min


    Chemical formula: Na4P2O7


    Molecular weight: 265.9



    Industrial and food grade



    Package: 25kg/bag or 1ton/bag

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Detail

Sodium Pyrophosphate (TSPP)

Alias: Tetrasodium pyrophosphate, tetrasodium phosphate or TSPP
Chemical formula: Na4P2O7

Molecular weight: 265.9

Executive standard: HG/T2968-1999 (industrial grade), GB8848-88 (food grade)

Traits:

White powder, easily soluble in water, insoluble in alcohol, relative density 2.45, melting point 890°C, the aqueous solution is weakly alkaline, easy to deliquesce in the air, the aqueous solution is relatively stable at 70°C, and it will be hydrolyzed into disodium hydrogen phosphate when boiled.

Use:

Used in washing aids, paper bleaching, electroplating industry; used as buffer, emulsifier, nutrient and quality improver in food industry.

Package:

Plastic inner woven, net weight 25KG/bag, two-layer inner bag; store in a ventilated and dry place.

Technical index

Indicator name

Industrial grade

Food grade

Exterior

White powder

Sodium pyrophosphate (as Na4P2O7),w/%≥

96.5

96.5

Phosphorus pentoxide (calculated as P2O5),w/%≥

51.5

51.5

Water insoluble matter%≤

0.10

0.10

Orthophosphate

qualified

qualified

PH value (1% solution)

9.9-10.7

9.9-10.7

Fineness (pass through 60 mesh sieve)

90

90

Fluoride (as F),w/%≤


0.005

Arsenic (AS),w/%≤


0.0003

Heavy metals (calculated as Pb),w/%≤


0.001

Burning weightlessness,w/%≤


0.5

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