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Tetra Sodium Pyrophosphate(TSPP)-E452(iii)

Molecular formula: Na4P2O7

Molecular Weight: 265.9

National Standard:GB25568-2010

CAS Number: 7722-88-5

Other Name: TSPP

INS.: E452(iii)


Properties

White powder; Soluble in water but insoluble in ethanol; Relative density 2.45g/cm3and melting point 890; Deliquescent in the open air. Its aqueous solution shows weak alkalinity and is stable at 70 but will be hydrolyzed into di-sodium phosphate when boiled .


Application

It is used as buffering agent, emulsifier, nutrition ingredients and quality improver.


Package

Packing :25 kgs bag,

Loading:25 kgs on pallet: 10 MT/20’FCL; Un-palletized:17MT/20’FCL

Specifications


NO

Item

Specifications

 1

 Appearance

white powder or granular  

 2

Assay (as Na4P2O7 )%≥

96.5

 3

P2O5 %≥

51.5

 4 

Ortho Phosphates

pass

 5 

PH Value

9.9-10.7

 6 

Water Insoluble matter % ≤

0.1

 7 

Size   (through 60mesh sieve)

90

 8 

Fluoride   (as F) ≤

0.005

Heavy   Metals (as Pb) % ≤

0.001

10 

Arsenic   (As)% ≤

0.0003

11

Pb % ≤

0.0004

12

L.O.I% ≤

0.5