Sulfur Dioxide

Base Information

• Chemical Name: Sulfur Dioxide
• CAS No.: 12143-17-8
• Deprecated CAS: 12396-99-5,8014-94-6,83008-56-4,89125-89-3,1239882-82-6,1239882-82-6,8014-94-6,83008-56-4,89125-89-3
• Molecular Formula: O₂S
• Molecular Weight: 64.0648
• European Community (EC) Number: 231-195-2
• ICSC Number: 0074
• UN Number: 1079
• UNII: 0UZA3422Q4
• DSSTox Substance ID: DTXSID6029672
• Nikkaji Number: J3.737K
• Wikipedia: Sulfur dioxide
• Wikidata: Q5282
• RXCUI: 1362879
• ChEMBL ID: CHEMBL1235997
• Mol file: 12143-17-8.mol

Synonyms:Sulfur Dioxide;Sulfurous Anhydride

Chemical Property of Sulfur Dioxide

Chemical Property:

• XLogP3: 0.1
• Hydrogen Bond Donor Count: 0
• Hydrogen Bond Acceptor Count: 3
• Rotatable Bond Count: 0
• Exact Mass: 63.96190041
• Heavy Atom Count: 3
• Complexity: 18.3
• Transport DOT Label: Poison Gas Corrosive

Purity/Quality:

Safty Information:

• Pictogram(s):  
• Hazard Codes: 

MSDS Files:

SDS file from LookChem

Useful:

• Chemical Classes: Toxic Gases & Vapors -> Corrosive Gases
• Canonical SMILES: O=S=O
• Inhalation Risk: A harmful concentration of this gas in the air will be reached very quickly on loss of containment.
• Effects of Short Term Exposure: Rapid evaporation of the liquid may cause frostbite. The substance is irritating to the eyes and respiratory tract. Inhalation may cause asthma-like reactions. The substance may cause effects on the respiratory tract. This may result in asthma-like reactions, reflex spasm of the larynx and respiratory arrest. The effects may be delayed. Medical observation is indicated.
• Effects of Long Term Exposure: Repeated or prolonged inhalation may cause asthma.

Technology Process of Sulfur Dioxide

There total 1763 articles about Sulfur Dioxide which guide to synthetic route it. The literature collected by LookChem mainly comes from the sharing of users and the free literature resources found by Internet computing technology. We keep the original model of the professional version of literature to make it easier and faster for users to retrieve and use. At the same time, we analyze and calculate the most feasible synthesis route with the highest yield for your reference as below:

synthetic route:

Reference yield:

pyrosulfuryl chloride (7791-27-7) + phosphorus trichloride (7719-12-2,52843-90-0) → phosphorus pentachloride (10026-13-8,874483-75-7) + sulfur dioxide (7446-09-5,12143-17-8,89125-89-3) + trichlorophosphate (10025-87-3,12599-09-6,63736-95-8,39380-77-3)

Guidance literature:

In not given; react. with S2O5Cl2 in coldness;;

Reference yield:

pyrosulfuryl chloride (7791-27-7) + phosphorus pentachloride (10026-13-8,874483-75-7) → sulfur dioxide (7446-09-5,12143-17-8,89125-89-3) + chlorine (7782-50-5) + trichlorophosphate (10025-87-3,12599-09-6,63736-95-8,39380-77-3)

Guidance literature:

In not given; react. with S2O5Cl2;;

Reference yield:

iron sulfide + iron(III) oxide → iron(II) oxide (1345-25-1) + sulfur dioxide (7446-09-5,12143-17-8,89125-89-3)

Guidance literature:

In neat (no solvent); byproducts: Fe3O4; heating of an oxide-sulfide-mixture in an N2-stream;; no formation of FeO below 900°C;;

upstream raw materials:

thiophene

Dimethyldisulphide

thionyl chloride

water

Downstream raw materials:

3-[(Z)-2-chloro-3,3,3-trifluoroprop-1-enyl]-2,2-dimethylcyclopropanecarbonyl chloride

5-ethoxycarbonyl-2,3,3-trimethylindolenine

methyl 3-chlorosulphonyl-5-(furan-2-yl)-2-thiophenecarboxylate

Methyl 5-(benzo[b]furanyl)-3-chlorosulphonyl-2-thiophenecarboxylate