CAS 7681-57-4 Food Grade Price Sodium Pyrosulfite Sodium Metabisulfite

Min.Order: 25

Product origin: Zhengzhou, Henan, China

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US$ 230 ~ 330

Description

CAS 7681-57-4 Food Grade Price Sodium Pyrosulfite Sodium Metabisulfite
Sodium Metabisulfite
Sodium Metabisulfite or sodium pyrosulfite (IUPAC spelling; Br. E. sodium metabisulphite or sodium pyrosulphite) is an inorganic compound of chemical formula Na2S2O5. The substance is sometimes referred to as disodium metabisulfite. It is used as a disinfectant, antioxidant and preservative agent.

Introduction
Appearance:White crystalline powder
Molecular formula: Na2S2O5
Molecular weight: 190.09
CAS No.: 7681-57-4
HS No.: 28321000.00
FEMA No.: 3025
EINECS No.:231-673-0
Function :preservative,Bleaching agent,Antiseptic,Inhibitor.

Technical Specification

Tests	Specification
Appearance	White free-flowing Crystal Powder
Purity (Na2S2O5)	97% min
Iron (Fe)	0.003% min
Heavy Metal (Pb)	5 ppm max
Arsenic (As)	1 ppm max
Water Insoluble	0.05% max
PH Value	4.0-4.6

Application
It is used widely as an acidifier, as a flavoring and chelating agent.

Packing
25kgs/PP PE BAG

Storage and Transportation
kept in a light-proof,well-colsed,dry and cool place.

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