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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 High Class Sodium Sulfite CAS no.:7757-83-7

  • Packaging & Delivery Packaging Details: 25kg/bag Delivery: 7 days after payments Sodium Sulfite 1. Purity: 96,98% 2.CAS no.:7757-83-7 3.MF:Na2SO3 4.White crystal powder 5.Usage (1) Industry Grade : Used in Dyeing and printing Industry ,as dechlorinat...
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  • China Hubei Ocean Biotech Co,.Ltd [Manufacturer]
  • Tel: 86-027-83733110
  • Address: No. 34, Fazhan Road, Qiaokou Dist.Wuhan Wuhan,HubeiChina
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7757-83-7 Sodium sulfite anhydrous

  • Chemical Name: Sodium Sulfite Anhydrous CAS No. :7757-83-7 Synonyms: Sodium sulfite anhydrous; SODIUM SULFITE, EXSICCATED; SODIUM SULPHITE; anhydroussodiumsulfite; disodiumsulfite; exsiccatedsodiumsulfite; natriisulphis; natriumsulfid Purity:97% Grad...
  • Min. Order: 3000
  • China Wuhan Sensedawn Science & Technology Co,. Ltd. [Manufacturer, Trading Company]
  • Tel: 86-27-87490179
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  • Address: Room No.2503,Harbor of Technology,No.58,Guanggu Ave.,Hongshan District Wuhan,HubeiChina
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7757-83-7 Sodium sulfite

  • United States HBCChem, Inc. [Manufacturers]
  • Tel: +1-510-219-6317
  • Fax: +1-510-675-0318
  • Address: Union City,CaliforniaUnited States
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7757-83-7 Sodium sulfite

  • We are real sodium sulfite manufacturer.price is very competitive and high purity Specification ITEM FOOD GRADE TECH GRADE TECh GRADE Na2SO3 > 97% > 96% > 93% FREE ALKALI 25kg double layer woven bags 2>25mt/27mt for a 20'foot container without pallet...
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  • China Hengdong Weichuang Ferrous Co.,Ltd [Manufacturer]
  • Tel: 86-731-85573666
  • Address: Limu Town,Hendong County,Hengyang Hunan,China Hengyang, Hunan Hengyang,HunanChina
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7757-83-7 Sodium sulfite food grade

  • We are real sodium sulfite manufacturer.price is very competitive and high purity Specification ITEM FOOD GRADE TECH GRADE TECh GRADE Na2SO3 > 97% > 96% > 93% FREE ALKALI 25kg double layer woven bags 2>25mt/27mt for a 20'foot container without pallet...
  • Min. Order: 10000
  • FOB Price: USDfalse - false /
  • China Hengdong Weichuang Ferrous Co.,Ltd [Manufacturer]
  • Tel: 86-731-85573666
  • Address: Limu Town,Hendong County,Hengyang Hunan,China Hengyang, Hunan Hengyang,HunanChina
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7757-83-7 Sodium sulfite factory price

  • We are real sodium sulfite manufacturer.price is very competitive and high purity Specification ITEM FOOD GRADE TECH GRADE TECh GRADE Na2SO3 > 97% > 96% > 93% FREE ALKALI 25kg double layer woven bags 2>25mt/27mt for a 20'foot container without pallet...
  • Min. Order: 10000
  • FOB Price: USDfalse - false /
  • China Hengdong Weichuang Ferrous Co.,Ltd [Manufacturer]
  • Tel: 86-731-85573666
  • Address: Limu Town,Hendong County,Hengyang Hunan,China Hengyang, Hunan Hengyang,HunanChina
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7757-83-7 Sodium sulfite 97%

  • We are real sodium sulfite manufacturer.price is very competitive and high purity Specification ITEM FOOD GRADE TECH GRADE TECh GRADE Na2SO3 > 97% > 96% > 93% FREE ALKALI 25kg double layer woven bags 2>25mt/27mt for a 20'foot container without pallet...
  • Min. Order: 10000
  • FOB Price: USDfalse - false /
  • China Hengdong Weichuang Ferrous Co.,Ltd [Manufacturer]
  • Tel: 86-731-85573666
  • Address: Limu Town,Hendong County,Hengyang Hunan,China Hengyang, Hunan Hengyang,HunanChina
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7757-83-7 Anhydrous Sodium Sulphite

  • China Trust&We Co., Ltd. [Manufacturer]
  • Tel: +86-21-61044582
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  • Address: 1-102,No.11,Dongjiaominxiang Alley,
    Dongcheng District,
    Beijing 100005,China ,China
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7757-83-7 anhydrous sodium sulfite 95%-98%

  • 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 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
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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.