Sodium Metabisulfite, buy 97.5% Sodium Metabisulfite Sodium Metabisulphite SMBS Na2S2O5 7681-57-4 on China Suppliers Mobile

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97.5% Sodium Metabisulfite Sodium Metabisulphite SMBS Na2S2O5 7681-57-4

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Classification: Other Inorganic Salts	CAS No.: 7681-57-4	Other Names: SMBS
MF: Na2S2O5	EINECS No.: 231-673-0	Place of Origin: China (Mainland)
Grade Standard: Food Grade, Industrial Grade	Purity: 97.5%	Appearance: White or yellowish crystalline powd...
Application: Water Treatment,Bleaching Agent,An...	Brand Name: OEM	Model Number: None
Molecular Weight:: 190.1065	Melting Point(℃):: 150℃	Water Solubility:: 540 g/L (20℃)
Risk Codes:: R22;R31;R41;	Safety Description:: S26;S39;S46;	Chemical Name:: Pyrosulfurous acid, disodium sa...
Odor:: odor of sulfur dioxide	Specific Gravity:: 1.4 (Water = 1 )	Dispersion Properties:: See solubility in water...
Conditions of Instability:: Incompatible materi...

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Sodium Metabisulfite
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Sodium Metabisulfite (SMBS)

is mainly used as reduction agent. Furthermore, sodium metabisulfite is ideal for the bleaching of vegetable fibers and textile, for the production of solutions, which are used in the developing of photos and films as well as for the treatment of tanning agents in dyeing of textiles. ChoiceChem offers different grades’ sodium metabisulfite, all meeting highest quality standards.

CAS RN.:	7681-57-4
EINECS:	231-673-0
H.S.CODE:	2832.1000.00

1. Chemical Analysis

Component	Range	Typical
Assay(Na2S2O5 )	96.0% min.	97.5%
Iron content(base on Fe)	0.005% max.	0.002%
water insoluble matter	0.05% max.	0.02%
Arsenic content(base on As)	1 ppm max.	1ppm
Pb	10 ppm max.	5ppm
Appearance	White or yellowish crystalline powder
Test Standard	Food Grade: GB 1893-2008
Industrial Grade: HG/T2826-1997

2. Application

Industrial Uses
Water Treatment	Eliminating dissolved oxygen in waste water and in pipes; Cleaning water pipes and reverse osmosis membranes in desalinization equipment as it is an antibacterial. Sodium metabisulfite is used in water treatment plants to remove excess chlorine.
Bleaching Agent	Sodium metabisulfite\'s functions as a bleaching agent, which is useful in making paper pulp, cotton and wool.

Food Preservative
Antimicrobial	Sodium metabisulfite is commonly used as a food preservative for dried foods, as well as fruit concentrate juices. Sodium