sodium sulfite

Product   name

Sequence   numbers

Testing   programmes

Superior

First grade

sodium sulfite

(HG/T2967-2010)

1

appearance

white crystalline powder

2

Na2SO3(%)

97

93.0

3

Fe(%)

0.003

0.005

4

water-insoluble substance(%)

0.02

0.03

5

free alkali(%)

0.10

0.40

6

sulfates(%)

2.5

__

7

chloride(%)

0.10

__


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