Tetra sodium pyrophosphate
Molecular formula: Na4P2O7
Molecular Weight: 265.9
Standard executed: GB8848-88(Food Grade)
Properties:
White powder; Soluble in water but insoluble in ethanol; Relative density 2.45 and 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.
Specifications:
| N O
|
Specifications
|
Food Grade
|
| 1
|
Assay (as Na 4 P 2 O 7 )%≥
|
96.5
|
| 2
|
P 2 O 5 %≥
|
51.5
|
| 3
|
Ortho Phosphates
|
pass
|
| 4
|
PH Value
|
9.9-10.7
|
| 5
|
Water Insoluble matter % ≤
|
0.20
|
| 6
|
Size (through 60mesh sieve)
|
90
|
| 7
|
Fluoride (as F) ≤
|
0.005
|
| 8
|
Heavy Metals (as Pb) % ≤
|
0.001
|
| 9
|
Arsenic (As)% ≤
|
0.0003
|
| 10
|
L.O.I. % ≤
|
0.50
|
About Sundia
Shifang Sundia Chemical Co. Ltd is the industry leader who is integrated with the R&D, production and marketing of high quality phosphate products.She is situated in Shifang City, Sichuan Province, where is rich in phosphor resource , and occupies a land area of 60,000 square meters, existing staff more than 500 employees.
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