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CAS No 7757-83-7 , disodium

  • Name: disodium
  • Synonyms: Disodium sulfite; 7757-83-7; Natrii sulphis; Sodium sulfite anhydrous; disodium salt; Sulfurous acid;Sulftech; Sodium sulphite;sulfite;disodium;
  • CAS Registry Number:
  • Melting Point: 500 °C
  • Density: 2.633
  • Refractive index: 1,484
  • Water Solubility: 23 G/100 ML (20 ºC)
  • Safety Statements: R22;R36/37/38
  • Hazard Symbols: Xn: Harmful;
  • HS Code: 28321000
  • EINECS: 231-821-4
  • Molecular Weight: 126.042739
  • InchiKey: GEHJYWRUCIMESM-UHFFFAOYSA-L
  • InChI: InChI=1S/2Na.H2O3S/c;;1-4(2)3/h;;(H2,1,2,3)/q2*+1;/p-2
  • Risk Statements: S24/25
  • Molecular Formula: Na2O3S
  • Molecular Structure:CAS No:7757-83-7 disodium
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7757-83-7 food grade Sodium sulfite

  • Molecular Formular: Na2SO3 Molecule weight: 126.04 Appearance: White or light yellow crystalline powder Quality standard: GB/1894-2005 Company standard Item Index Total content(as Na2SO3)% ≥97.0 Fe(as Fe)% ≤0.01 Free alkali(as Na2Co3)% ≤0.60 Heavy...
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  • China Xinxiang City Yuguang Technology Co., Ltd [Manufacturer]
  • Tel: 86-0373-5858028
  • Address: Jinsui Street Xinxiang ,HenanChina
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7757-83-7 industrial grade anhydrous Sodium sulfite

  • Molecular Formular: Na2SO3 Molecule weight: 126.04 Appearance: White or light yellow crystalline powder Quality standard: GB/1894-2005 Company standard Item Index Total content(as Na2SO3)% ≥97.0 Fe(as Fe)% ≤0.01 Free alkali(as Na2Co3)% ≤0.60 Heavy...
  • FOB Price: USDfalse - false /
  • China Xinxiang City Yuguang Technology Co., Ltd [Manufacturer]
  • Tel: 86-0373-5858028
  • Address: Jinsui Street Xinxiang ,HenanChina
Contact Supplier

7757-83-7 food grade anhydrous Sodium sulfite

  • Molecular Formular: Na2SO3 Molecule weight: 126.04 Appearance: White or light yellow crystalline powder Quality standard: GB/1894-2005 Company standard Item Index Total content(as Na2SO3)% ≥97.0 Fe(as Fe)% ≤0.01 Free alkali(as Na2Co3)% ≤0.60 Heavy...
  • FOB Price: USDfalse - false /
  • China Xinxiang City Yuguang Technology Co., Ltd [Manufacturer]
  • Tel: 86-0373-5858028
  • Address: Jinsui Street Xinxiang ,HenanChina
Contact Supplier

7757-83-7 Sodium sulfite

  • China ORCHID CHEMICAL SUPPLIES LTD (OCS) [Importer/Exporter]
  • Tel: +86-571-85395792
  • Fax: +86-571-85420103
  • Address: 607, North Zhongshan Road, Hangzhou 310000 China ,ZhejiangChina
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7757-83-7 Sodium sulfite

  • Molecular Formular: Na2SO3 Molecule weight: 126.04 Appearance: White or light yellow crystalline powder Quality standard: HG/T 2967-2000 Company standard Item Index Top-grade First grade Qualified product Total content(as Na2SO3)% ≥97.0 ≥96.0 ≥93....
  • Min. Order: 10
  • China Xinxiang City Yuguang Technology Co., Ltd [Manufacturer]
  • Tel: 86-0373-5858028
  • Address: Jinsui Street Xinxiang ,HenanChina
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7757-83-7 SODIUM SULFATE

  • United States Bromorganics Corporation [Manufacturer]
  • Tel: 847-238-9588
  • Fax: 847-238-9688
  • Address: Bromorganics Corporation
    P. O. Box 722
    Elk Grove Village, Illinois 60009 ,United States
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7757-83-7 Anhydrous Sodium Sulphite

  • China Shanghai Xunxin Chemical Co., Ltd [Manufacturers]
  • Tel: +86-(21)-38218795
  • Fax: +86-(21)-38218795
  • Address: 580 Lane, Kanghong Road, Pudong New District, Shanghai 201315, Shanghai,ShanghaiChina
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7757-83-7 Sodium sulfite

  • Sodium sulfite CAS No.: 7757-83-7 HS No.: 28321000 Hazard Class: no hazard chemicals EINECS no.: 231-821-4 Formula: Na2O3S Molecular weight: 126.04 Package: in 25/50/1000kg plastic woven bag inner with pe film,25-27mts/20'fcl with out pallet, 22mts/2...
  • China Taizhou Sunny Chemical Co.,Ltd. [Manufacturer]
  • Tel: 86-523-86920899
  • Address: No.11 Xingyuan Road,Taizhou Jiangsu China taizhou,JiangsuChina
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7757-83-7 Sodium sulfite

  • Hong kong ADVANCED TECH. & IND. CO., LTD. [Distributor/Wholesaler]
  • Tel: 86-23902293
  • Fax: 86-27898314
  • Address: UNIT B, 1/F, CHEONG SHING IND. BLDG., 17 WALNUT ST., TAI KOK TSUI, KLN, HONG KONG Hong Kong,nilHong kong
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7757-83-7 Anhydrous Sodium Sulphite

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References of disodium
Title: Sodium Sulfite
CAS Registry Number: 7757-83-7
Molecular Formula: Na2O3S
Molecular Weight: 126.04
Percent Composition: Na 36.48%, O 38.08%, S 25.44%
Line Formula: Na2SO3
Properties: Small crystals or powder. It is fairly stable and does not oxidize as readily as the hydrated sulfite. Sol in 3.2 parts water; sol in glycerol; almost insol in alcohol. pH about 9. Keep well closed. LD50 i.v. in mice: 175 mg/kg, Hoppe, Goble, J. Pharmacol. Exp. Ther. 101, 101 (1951).
Toxicity data: LD50 i.v. in mice: 175 mg/kg, Hoppe, Goble, J. Pharmacol. Exp. Ther. 101, 101 (1951)
 
Derivative Type: Heptahydrate
Properties: Efflorescent crystals. Unstable, oxidizing in the air to sulfate. Sol in 1.6 parts water, about 30 parts glycerol; sparingly sol in alc. The aq soln is alkaline and dissolves sulfur. pH ~9. Keep well closed in a cool place. Note: The commercial heptahydrate (about 90% pure, the remainder consisting chiefly of the sulfate) has been largely replaced by the commercial anhydr salt (about 96-99% pure) which is more stable.
 
Use: Chiefly in photographic developers and instead of "hypo" for fixing prints; bleaching wool, straw, silk; generating SO2; as reducer in manuf dyes; silvering glass; removing traces of Cl in bleached textiles and paper; preserving meat, egg yolks, etc.