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Home > Products >  Sodium pyrosulfite 7681-57-4 is white or slightly yellowish powder

Sodium pyrosulfite 7681-57-4 is white or slightly yellowish powder CAS NO.7681-57-4

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  • Min.Order: 25 Metric Ton
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Keywords

  • Sodium metabisulfite slightly yellowish powder
  • Sodium metabisulfite White powder
  • Sodium pyrosulfite 7681-57-4

Quick Details

  • ProName: Sodium pyrosulfite 7681-57-4 is white ...
  • CasNo: 7681-57-4
  • Molecular Formula: Na2S2O5
  • Appearance: White or slightly yellowish powder
  • Application: a):Bleaching agent for textile fibres,...
  • DeliveryTime: 3 working days after your order
  • PackAge: 25kg.50kg.500kg etc. we can be accordi...
  • Port: Huangshi
  • ProductionCapacity: 400000 Metric Ton/Year
  • Purity: 96.5~98%
  • Storage: Sealed in HDPE bag
  • Transportation: by sea
  • LimitNum: 25 Metric Ton
  • Grade: Industrial Grade
  • Na2S2O5, %≥: 96.5
  • Fe, % ≤: 0.003
  • Insolubles, % ≤: 0.05
  • As, %≤: 0.0001
  • Moisture, %≤: 0.03

Superiority

sodium pyrosulfite 7681-57-4 is white or slightly yellowish powder

name: sodium metabisulphite/ sodium metabisulfite cas no.:7681-57-4

appearance: white

grade: food grade/industry grade

type: emulsifiers, enzyme preparations, flavoring

molecular formula: na2s2o5

cas no. : 7681-57-4

einecs : 231-673-0

hs code: 28311020

certificate: sgs/health certificate/iso certificate

sodium metabisulfite is applied as a preservative in foods like baked foods, wines, dried fruit, jams and various sauces. the substance is at times referred to as disodium, and it is also used as a disinfectant and antioxidant agent.

company information

 huangshi jiake environmental protection technology co., ltd. has a building area of more than 150,000 square meters. it is a professional manufacturer of high-purity industrial-grade anhydrous sodium sulfite and sodium metabisulfite. we have annual productive capacities of 400,000 tons of sodium metabisulfite with purity 96.5~98%.

we have experienced technicians, leading facilities, a modern management system and an excellent after-sale service system. we use the mechanical vapor recompression technology for production and automachine for package. our products is clean and pure, the quality is over food grade standard. output of sodium metabisulfite covers over 18 provinces in china market,our production capacity is leading globally.

Details

Sodium pyrosulfite 7681-57-4 is white or slightly yellowish powder

English name:     Sodium Metabisulfite/cas:7681-57-4

molecule formula:Na2S2O5 
molecule weight:190.10
Physical properties:
It is white or tiny yellow crystal powder. Its relative density is 1.4. The solubility  is 54g/100mlwater at 20°C or 81.7g/100mlwater at 100°C,and the solution show acidity. It can solute in glycerine and little in alcohol. When exposed in air, it will oxidized into sodium sulfate, and can react with strong acid into sulfur dioxide gas and the salts. It is  deliquescent, and will decompose when heated to 150°C.

state santandard:GB1893-86
Index


Sodium pyrosulfite

≥(SO2)65%

iron

≤0.005%

value of PH

4—4.6

heavy metal (Pb)%

≤0.002%

(As)%

≤0.0001%

appearance

white or tiny yellow crystal powder

Application:

Used in medicine when producing chloroform,solasulfone and methnylal;used as coagulant in rubber industry; used as dechlorided agent or assistants in printing and dyeing industry; used to improve leather properties in leather industry; used as developing agent in photosensitivity industry; used when producing hydroxyl geranial, hydrochloric hydroxylamine in chemical industry; used as bleaching agent, antiseptics,  antioxidant, ect.in food industry.

Sodium metabisulfite is a white or yellow crystalline powder or a small crystal with a strong SO2 odor. The specific gravity is 1.4. It dissolves in water and the aqueous solution is acidic. When it comes into contact with strong acid, SO2 is released and the corresponding salt is generated. If it is left in the air for a long time, it is oxidized. As Na2S2O6, so the product can not exist for a long time. Above 150 degrees Celsius, SO2 is decomposed.

Synonyms: disodiummetabisulfite; disodiumpyrosulphite; fertisilo; metabisulfitedesodium; Sodiummetabisufite; sodiummetabisulfite(na2-s2o5); sodiumpyrosulfite(na2s2o5); Sodium dissulfite; Sodium disulphite; Sodium pyrosulphite

application: Antioxidant, water treatment, preservative, decolorizer, reducing agent, rubber coagulator, mineral separation, developing agent, sewage treating agent
 

Other products of this supplier

Other Related Products:7681-57-4
Friend Links:Huangshi Jiake Environmental Protection Technology

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