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Tel:
+86-156-2878-2329
E-Mail：sales001@bosschemical.com
E-Mail：sales001@bosschemical.com
No. 55, Gongye South Road, Jinan Area, China (Shandong) Pilot Free Trade Zone.
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7681-57-4
futurechem
7681-57-4
Product Description
Product name:Sodium metabisulfite
CAS：7681-57-4
MF：H2O5S2.2Na
MW：192.12
EINECS:231-673-0
Applicatiuon：
The pharmaceutical industry is used to produce chloroform, phenylpropyl sulfone and benzaldehyde. Used as coagulant in rubber industry. In the printing and dyeing industry, it is used as a dechlorination agent after bleaching cotton cloth and as a scouring aid for cotton cloth. Used in the tanning industry to treat leather to make it soft and plump. In the chemical industry, it is used to produce hydroxyvanillin, hydroxylamine hydrochloride, etc. In photosensitive industry, it is used as developer, etc.
Specifications :
ITEM | SPECIFICATION | TEST RESULT |
PURITY(AS Na2S2O5 ): | 97.0%MIN | 97.26% |
SULFUR DIOXIDE(SO2): | 65.0%MIN | 65.53% |
HEAVY METALS(As Pb): | 0.0005%MAX | 0.00015% |
WATER INSOLUBLE: |
0.05%MAX |
0.02% |
IRON(Fe): | 0.003%MAX | 0.0013% |
PH VALUE: | 4.0-4.8 | 4.4 |
