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Specifications

Tetra Sodium Pyrophosphate(TSPP)
 
 
 
Byname: Tetra Sodium pyrophosphate
Molecular formula: Na4P2O7
Molecular Weight: 265.9
Standard executed: HG/T2968-1999(Technical Grade)
                                GB8848-88 or FCC (Food Grade)
CAS Number: 7722-88-5
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 .
Uses:
Applied in industries of detergents as detergent auxiliary, paper production to bleach and electroplating; In food industry it is used as buffering agent, emulsifier, nutrition ingredients and quality improver.
Packing and storage:
In 25kg net PP bage,store at a cool,dry and well ventilated place.
Guaranteed Technical Specifications:
NO
Specifications
Industrial Grade
Food Grade
 1
 Appearance
white powder or granular 
 
 2
Assay (as Na4P2O7 )%≥
96.5
96.5
 3
P2O5 %≥
51.5
51.5
  4 
Ortho Phosphates
pass
pass
  5 
PH Value
9.9-10.7
9.9-10.7
  6 
Water Insoluble matter % ≤
0.1
0.1
  7 
Size (through 60mesh sieve)
90.0
90
  8 
Fluoride (as F) ≤
 
0.005
  9 
Heavy Metals (as Pb) % ≤
 
0.001
  10 
Arsenic (As)% ≤
 
0.0003
 11
L.O.I% ≤
 
0.5