Sodium Sulfite Anhydrous 96% (CAS No.: 7757-83-7)

• Appearance: Powder, Solid Crystalline Powder
• Classification: S
• Certification: ISO
• Purity: 90%~99%
• Type: Sodium Sulfide
• Grade Standard: Industrial Grade
• Model NO.: Sodium Sulfide
• Colour: White
• Molecular Weight: 126.04
• Density: 2.633 g/cm3 (Anhydrous)
• Water Solubility: 67.8 G/100 Ml
• Solubility: Soluble in Glycerol
• Odor: Sulfurous. Odorless
• Specific Gravity: 2.63 (Water = 1)
• Transport Package: 25kg/Bag /1200kgs/Jumbo Bag
• Specification: Tech Grade
• Trademark: OS
• Origin: China
• Production Capacity: 5000tons

Product Description

Sodium Sulfite Anhydrous 

Description:
It has the smell of sulfur dioxide. It can lose some part of sulfur dioxide in the air, at the same time it is oxidated to the sulfate. It can be dissolved about in the water, while can be dissolved slightly in the ethanol, and the water solution shows acidity. Normally, it includes many kinds of the different proportion of Sodium metabisulfite.

Usage:
It can be used as the deoxidizer and decolourant in the printing and dyeing industry. It can be used as developer in the sensitization industry.
It can be used the reducing agent in the organic industry. It can be used as stabilization agent of the synthetic fiber in the weave industry. It also can be used in the medicament industry, the paper-making, the electron and the water treatment.
Appearance: White crystallites powder


Sodium Sulfite Properties

Molecular formula	Na 2 SO 3
Molar mass	126.043 g/mol
Appearance	white solid
Odor	odorless
Density	2.633 g/cm 3  (anhydrous) 1.561 g/cm 3  (heptahydrate)
Melting point	33.4 °C (dehydration of heptahydrate) 500 °C (anhydrous)
Boiling point	Decomposes(separate (substances) into constituent elements)
Solubility  in water	67.8 g/100 mL (18 °C, heptahydrate)
Solubility	soluble in  glycerol insoluble in  ammonia , chlorine
Acidity  (p K a )	~9 (heptahydrate)
Refractive index ( n D )	1.565

 
 
Sodium Sulfite  Specification
 

Molecular Formula	Na 2  SO 3	Molecule Weight		126.04
CAS No.	7757- 83-7	HS Code		28321000
Identity:White crystal or powder and have smell such as SO 2  , it will lose some sulfur dioxide if emerged in air, and create sulfate.
Uses:Used in leather and medicine, bleach textile and paper, reductant
Item	Top grade		First grade	Qualified grade
Sodium sulfide  (Na 2 SO 3 ) ,%≥	99.0		98.0	97.0
Water-Insoluble , %≤	0.005		0.02	0.03
Chloride (Nacl ) ,%≤	0.004		0.1	0.1
Sulfate (Na 2 SO 4  ) ,%≤	1.00		1.5	2.5
Fe,%≤	0.002		0.003	0.003
Heavy metal (Pb) ≤%	0.001		0.002	0.002
Package	25 plastic bag or big bag(FIBC)