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Food additive sodium dihydrogen phosphate anhydrous

Detail

English name: sodium dihydrogen phosphate anhydrous
Alias: Sodium acid phosphate for food
Molecular formula:   NaH2PO4·nH2O (n=0,n=1,n=2)
Property: White powder, melting point 60℃, easily soluble in water, insoluble in alcohol, turns into anhydrous substance if heated to 95℃, transforms into sodium acid pyrophosphate at 190-204℃ , then condenses to sodium polyphosphate at 204-244℃.
Executive standard: GB 25564-2010
Quality standard: 
Sensory requirements: Should be comply with the following provisions.

Item

Requirements

Color

White

Structural state

Crystalline powder or particle


Physicochemical index: Should be comply with the following provisions.

Item

Index

  Content of sodium dihydrogen phosphate anhydrous (Calculated by NaH2PO4) (Calculated by dry basis),w/%

98.0-103.0

  Water insoluble matter,w/% ≤

0.2

  Arsenic (As)/ (mg/kg) ≤

3

  Heavy metal (Calculated by Pb),w/% ≤

10

  Lead (Pb)/ (mg/kg) ≤

4

  Fluoride (Calculated by F)/ (mg/kg) ≤

50

  pH value (10g/L solution)

4.1-4.7

  Drying loss (NaH2PO4),w/% ≤

2.0

  Drying loss (NaH2PO4·H2O),w/%

10.0-15.0

  Drying loss (NaH2PO4·2H2O),w/%

20.0-25.0 


Usage: Mainly used as emulsifier, buffer and quality improver in food industry.

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