Byname: Tetra Sodium pyrophosphate
Molecular formula: Na
4P
2O
7
Molecular Weight: 265.9
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.
Packing and storage:
In double layer bags of 25Kg net. It must be stored in places
well ventilated and dry.
Guaranteed Technical Specifications:
| Specifications
|
Industrial
Grade |
Food
Grade |
| Assay
(as Na4P2O7 )%≥ |
96.5 |
96.5 |
| P2O5
%≥ |
51.5 |
51.5 |
| Ortho Phosphates |
pass |
pass |
| PH Value
|
9.9-10.7
|
9.9-10.7
|
| Water
Insoluble matter % ≤ |
0.2 |
0.2 |
| Size (through 60mesh sieve)
|
90 |
90 |
| Fluoride
(as F) ≤ |
|
0.005
|
| Heavy Metals
(as Pb) % ≤ |
|
0.001
|
| Arsenic (As)% ≤ |
|
0.0003
|
| L.O.I. % ≤ |
|
0.5
|
