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Classification
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Chemical Auxiliary Agent
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|
CAS No.
|
7681-57-4
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|
Other Names
|
Sodium Pyrosulfite
|
|
MF
|
Na2S2O5
|
|
EINECS No.
|
231-673-0
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|
Purity
|
64%min
|
|
Place of Origin
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Shandong, China (Mainland)
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Type
|
sodium metabisulphite
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Usage
|
Rubber Auxiliary Agents, Textile Auxiliary Agents
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Brand Name
|
OKEY
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Model Number
|
OKEY-L15
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color
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white
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state
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powder
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specification:
|
name
|
sodium metabisulphite
|
|
|
SO2
|
min
|
65.0% min
|
|
Na2S2O4
|
max
|
2.0% max
|
|
insolubles in water
|
max
|
0.05% max
|
|
Na2S2O4
|
|
85% (mesh 200)
|
|
heavy metals
|
max
|
10ppm max
|
|
As
|
max
|
1ppm max
|
|
Fe
|
max
|
5ppm max
|
|
pH
|
|
4.5 - 5.5
|
application:
1. Sodium hydrosulphite is used in chemical industry and medicine manufacture.
2. Used in photographic industry as fixing agent .
3. Used in making perfume .
4. Used as antiseptic .
5. Used as coagulator in rubber manufacture .
6. Used as bleaching agent in textile.