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Food grade sodium pyrophosphate (TSPP)

Category
category：Food additive application
Properties: white powder, easily soluble in water, insoluble in alcohol, relative density 2.45, melting point 890 ℃, the aqueous solution is weakly alkaline, easy to deliquescence in the air, the aqueous solution is relatively stable at 70 ℃, hydrolyzed into disodium hydrogen phosphate when boiled .
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Product description
Parameters

Sodium pyrophosphate (TSPP)

TetraSodiumPyrophosphate

Chemical formula: Na4P2O7

Molecular weight: 265.9

CASNO: 7722-88-5

Executive standard: HG/T2968-1988 (industrial grade), GB8848-88 (food grade)

Properties: white powder, easily soluble in water, insoluble in alcohol, relative density 2.45, melting point 890 ℃, the aqueous solution is weakly alkaline, easy to deliquescence in the air, the aqueous solution is relatively stable at 70 ℃, hydrolyzed into disodium hydrogen phosphate when boiled .

Application: Used as buffer, emulsifier, nutrient and quality improver in food industry.

Packing: inner plastic outer woven, net weight 25Kg, 50Kg, 1000Kg per bag, stored in a ventilated and dry place.

[Table unit: %]

No.

Specifications

   GB Internal control indicators

1

 Exterior   White powder

2

 Main content (calculated as Na4P2O7) ≥

96.5—100.5

97

3

 Phosphorus pentoxide (calculated as P2O5) ≥

51.5

51.5

4

 Orthophosphate   qualified qualified

5

 PH value (1% aqueous solution)  

9.9-10.7

6

 Water insoluble matter ≤

0.2

0.1

7

 Fineness (passing through 60 mesh sieve)  

90

95

8

 Fluoride (as F) ≤

0.005

0.002

9

 Heavy metals (as Pb) ≤

0.001

0.0008

10

 Arsenic (as As) ≤

0.0003

0.0003

11

 lead ≤

0.0004

0.0002

12

 loss on ignition ≤

0.5

0.5
Keyword:
qualified
insoluble
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Food Grade Monosodium Phosphate (MSP)
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Sodium Trimetaphosphate (STMP)

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