|Place of Origin:||Hunan|
|Certification:||ISO 9001 SGS|
|Model Number:||sodium sulfite anhydrous -reductant|
|Minimum Order Quantity:||1 metric ton|
|Price:||usd 430 per metric ton|
|Packaging Details:||25 kgs bag,1000 kgs big bag|
|Delivery Time:||5-8 days|
|Payment Terms:||T/T , L/C|
|Supply Ability:||3000 tons per month|
|Name:||Reductant SSA Sodium Sulfite||Other Name:||Reductant SSA Sodium Sulphite Anhydrous|
sodium sulfite photography,
sodium sulfite food grade
FOR WATER TREATMENT ANHYDROUS SODIU SULFITE SODIUM SULPHITE
Specification For Photo Grade and Pharmaceutical Grade
|Photo Grade||Pharmaceutical Grade|
|Purity ( As Na2SO3)||98.0% min||98.0% min|
|Sodium sulphate ( SO4 )||1.0% max||1.0% max|
|Chlorides ( As CL-)||0.05% max||0.05% max|
|Arsenic ( As )||0.0002% max||2ppm max|
|Lead ( As Pb)||0.0005% max||2ppm max|
|Iron (Fe)||0.001% max||5ppm max|
|Selenium ( Se)||0.0001% max||1ppm max|
|Zinc ( Zn)||0.0001% max||1ppm max|
|Copper ( Cu )||0.0001% max||0.1ppm max|
|Mercury ( Hg)||0.0001% max||0.1 ppm max
Property: white gravel or powder crystal,relative density is 1.561, less to dissolve in water and its water solution has alkaline reaction; it is hard to dissolve in ethanol. It is used to produce chloroform,solasulfone and Benzaldehyde in medical industry.
SS is used as an antichlor in water treatment and desalination plants; in the reduction of wastewater in chrome-plating industry; as a preservative in the manufacture of trinitrotoluene (TNT); as a bleaching agent and for scrubbing sulphur dioxide gas in pulp mills in power plants and for leather treatment.
It is also used as an oxygen scavenger in low-pressure boilers and in the manufacture of detergent, sodium thiosulphate and photographic chemicals.
|CAS Number||· 7757-83-7|
|3D model (JSmol)||· Interactive image|
|E number||E221 (preservatives)|
|PubChem CID||· 24437|
|Molar mass||126.043 g/mol|
|Density||2.633 g/cm3 (anhydrous)|
|1.561 g/cm3 (heptahydrate)|
|Melting point||33.4 °C (92.1 °F; 306.5 K) (dehydration of heptahydrate)|
|500 °C (anhydrous)|
|Boiling point||Decomposes(separate (substances) into constituent elements)|
|Solubility in water||27.0 g/100 mL water (20 °C)|
|Solubility||soluble in glycerol insoluble in ammonia,chlorine|
|Acidity (pKa)||~9 (heptahydrate)|
|Crystal structure||hexagonal (anhydrous)|
|Safety data sheet||ICSC 1200|
(1) Industry Grade : Used in Dyeing and printing Industry ,as dechlorinating agent and bleaching agent, in leather and tanning industry as bleaching agent , developer agent , reductant agent , stabilizer agent , or used in papermaking, electronic and water treatment industry.
(2) Food Grade: In food industry as additive (E223) preservative, antioxidant and antimicrobic for fruits (dried, glazed and candled), vegetables (onions, potatoes, etc.), juices (citrus and grapes) and fish (shrimps and prawns). In silage treatment as antifermentative. In starch and sweeteners production as bacteriostatic.
(3) Photo Grade: In the photographic industry as component of developer bath .
(4) Pharmaceutical Grade : pharmaceutical industry for the production of chloroform, benzene and formaldehydephenylpropanoid Sulfone
Molecular Formula : Na2SO3
Molecule Weight : 126.04
CAS NO .: 7757-83-7
Appearance : White Free Flowing Fine Crystal or Powder
Packing: Packed in 25kg plastic woven bag, Kraft paper bag, PE bag, 500kg/1000kg/1100kg/1200kg jumbo bag or as per the buyer’s requirement
Storage: Store the product in a dry and cool place.
Contact Person: Ms.xie