96.5% Min Na2s2o5 Food Tech Grade Metabisulphite Sodium CAS 7681-57-4

• CAS No.: 7681-57-4
• Formula: Na2s2o5
• EINECS: 231-673-0
• Purity: 65%, 96.5%
• Type: Sodium Sulfate
• Appearance: Powder
• Grade Standard: Industrial Grade
• Product Name: Sodium Metabisulfite
• Classification: Sulphate
• pH: 4-4.6
• Fe: 0.03%
• Water Insoluble: 0.05max
• Grade: Food Grade, Industrial Grade
• Water Solubility: 54G/100ml Water
• Application: Food Additive
• Usage: Water, Dyeing, Gold, Food
• Transport Package: 25kg/50kg/1000kg Bag
• Origin: China
• HS Code: 2832100000

Product Description

Product Description

 Sodium Metabisulfite is a white or yellow crystalline powder or small crystal, with sulfurous acid odor, the proportion of 1.4, soluble in water. Sodium pyrophosphate can not be stored for a long time, and the packaging should be sealed to prevent air oxidation. Soluble in water soluble in glycerin, slightly soluble in ethanol. Moisture easily decomposed, exposed to the air easily oxidized into sodium sulfate.

Specification

ITEM	INDUSTRIAL GRADE	FOOD GRADE
Content(as SO2)	65%	65%
Water-insoluble Matter	0.05%	0.05%
0.0030.003Iron(Fe)	0.003	0.003
PH	4-4.6	4-4.6
As		0.0002
Lead(Pb)		0.002

Application

1.The Industrial grade:can be used as the printing and dyeing mordant; fabric bleaching dechlorination agent.

2.It Can be used as Bamboo, wood, paper fiber bleach.

3.It can be used as Non-ferrous metal ore dressing agent.

4.It Can be used as Wastewater treatment agent; rubber coagulant.

5.In The perfume industry is used as a hydrocarbon-based perfume aldehyde.

6.Used in the leather industry as a depilatory, softener and anti-wear agent.

7.In Photosensitive industry can be used as a reducing agent for developers, a protective agent for fixing solution.

8 The food grade sodium metabisulfite can be used in food processing as the food additives.