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- Details for China Sodium metabisulfite
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Sodium metabisulfite 7681-57-4
Category : Inorganic chemicals
CAS NO : 7681-57-4 EC NO : 231-673-0 MF : Na2S2O5 MW : 190.1065 Product description : Product Name:
Sodium metabisulfite
Category:
Inorganic chemical/inorganic salt
CAS NO:
7681-57-4
EC NO:
231-673-0
Molecular Formula:
Na2S2O5
Specifications
Item
Quality spec.
food grade
technical grade
Purity (Na2S2O5)
≥98.0%
≥970%
Sulfur dioxide( SO2)
≥65.0%
65.0%
Arsenic ( As )
≤0.0002%
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Heavy metal (Pb)
≤0.0005%
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Selenium (Se )
≤0.0005%
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Iron (Fe)
≤0.001%
≤0.002%
Insol. in water
≤0.02%
≤0.05%
pH-value :
4.0-4.8
4.0-4.8
Note:
Meet FCC V and E 223 standard
Molecular Weight:
190.1
Packing:
In PP woven bag lined with PE film bag, lining thickness≥0.05mm,25, 50, 1000kg/bag
Specifications:
Properties: white or yellowish crystalline powder with strong SO2 odor; specific wt.: 1.4. soluble in water, its aqueous solution is acidic.
Molecular Formula: Na2S2O5
Molecular Weight: 190.10
CAS NO.: 7681-57-4Use:
As mordant for printing & dyeing; as dechlorinating agent for textile bleaching; as reducing agent and sulfonating agent for chemical and medical industries etc.
Synonyms : Sodium pyrosulfite;disodium disulphite;Sodium metabisulphite;Sodium disulphite;Sodium pyrosulphite;SODIUM DISULFITE;disodium oxidosulfanesulfonate oxide;Sodium Metabi; Molecular Structure : 
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