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Sodium Pyrophosphate
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Description

 CAS No.: 7722-88-5

HS code: 2835390000

Molecular Formula: Na4P2O7                          

Molecular Weight265.9

Properties: White powder, easily soluble in water, relative density is 2.45, melting point is 890 o C, its water solution is alkaline, PH value of 1% water solution is 9.9-10.7

Application: Mainly used as detergent in washing, bleach in paper-making, electroplating, etc. For food grade it is mainly used as food additive. Buffering agent, emulsification agent, and nourishment, and modifying agent, etc.

Packing: Plastic-woven sack with polythene inner bag; Net weight: 25kg, 50kg or 1000kg; Stored in ventilated and dry place.


Specification

 

 No

 Specifications          

 Industrial grade

 Food grade

 1

 Main content, %≥

 96.5

 96.5

 2

 P 2 O 5, %≥

 51.5

 51.5

 3

 Phosphate

 Qualified

 Qualified

 4

 pH of 1% water solution

 9.9-10.7

 9.9-10.7

 5

 Sieve test(Through60mesh) , %≥

 90

 90

 6

 Heavy metal, as Pb    %≤

 -

 0.001

 7

 Arsenic, as As , %≤

 -

 0.0003

 8

 Fluoride, as F, %≤

 -

 0.005

 9

 Water insoluble , %≤

 0.2

 0.2



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