Print and Dyeing of Sodium Metabisulphite 97% Tech Grade and Food Grade Smbs

• CAS No.: 7681-57-4
• Formula: Na2s2o5
• EINECS: 231-673-0
• Certification: CCIC, CIQ, ISO
• Purity: 90%~99%
• Type: Sodium Sulfate
• Model NO.: Tech Grade and Food Grade
• Appearance: Powder
• Grade Standard: Industrial Grade
• Density: 1.48 g/cm3
• Usage 1: Antioxidants
• Usage 2: Food Additive
• MOQ: 27.5 Mts
• Package: 25 Kgs or 1200 Kgs Jumbo Bag
• Transport Package: 25 Kgs Bag or Jumbo Bag
• Specification: 97% min
• Trademark: FRIENDO
• Origin: China
• HS Code: 283210
• Production Capacity: 50000 Mts Per Year

Product Description

Print and Dyeing of Sodium Metabisulphite 97% Tech Grade and Food Grade SMBS

1. Prodcut Description

Sodium pyrosulfite (Na2S2O5) is an inorganic compound with a white or yellow crystal appearance and a strong pungent odor. Soluble in water, the aqueous solution is acidic, and contact with strong acids releases sulfur dioxide and generates the corresponding salts. In the air for a long time, it is oxidized into sodium sulfate, so sodium metabisulfite can not be long.
 

Chemical Name	Sodium Metabisulphite
Molecular Formula	Na2S2O5
Character	White or yellow crystalline powder or small crystalline, with a strong smell of sulfur dioxide, it is soluble in water.
CAS NO.	7681-57-4
Applications	1. In food industry, it is used as bleaching agents, preservatives, loosen agents, antioxidants, color protecting agents and preservatives. 2. Leather Industry can make leather soft, waterproof, anti-floding, wear resistance

2. Specification

Iterms	Food Grade	Tech Grade
Sodium Metabisulfite  (Na2S2O5)	97% min	97% min
SO2	65% min	65% min
Fe	0.003% max	0.05% max
Clarity	Clear	Clear
Insoluble matter in nitric acid	0.01% max	0.05% max
Heavy metals (PB)	0.0005% max	/
AS	0.0001% max	/
Ph Value	4.0-5.0	4.0-5.0

3. Packages

4. Applications
- Used in the production of insurance powder, sulfadimethylpyrimidine, anethine, caprolactam, etc.;
- For the purification of chloroform, phenylpropanone and benzaldehyde. Used in the photographic industry as a fixing agent ingredient;
- The spice industry is used to produce vanillin;
- Used as a preservative in brewing industry;
- Rubber coagulant and cotton bleaching dechlorination agent;
- Organic intermediates; Used for printing and dyeing, leather; Used as a reducing agent;
- Used as electroplating industry, oilfield wastewater treatment and used as mineral processing agent in mines;
- It is used as a preservative, bleach and loose agent in food processing.