| Identification | More | [Name]
Dimethyl sulfite | [CAS]
616-42-2 | [Synonyms]
DIMETHYL SULFITE
METHYL SULFITE
SULFUROUS ACID DIMETHYL ESTER
(CH3O)2SO
Dimethoxy sulfoxide
dimethoxysulfoxide
Dimethyl ester of sulfurous acid
Dimethyl sulphite
Sulphurous acid dimethyl ester
tl159
Sulfurous acid dimethyl | [EINECS(EC#)]
210-481-0 | [Molecular Formula]
C2H6O3S | [MDL Number]
MFCD00008415 | [Molecular Weight]
110.13 | [MOL File]
616-42-2.mol |
| Chemical Properties | Back Directory | [Appearance]
CLEAR COLORLESS TO PALE YELLOW LIQUID | [Melting point ]
0°C | [Boiling point ]
126-127 °C (lit.) | [density ]
1.294 g/mL at 25 °C(lit.)
| [refractive index ]
n20/D 1.410(lit.)
| [Fp ]
106 °F
| [storage temp. ]
Flammables area | [form ]
Liquid | [color ]
Clear colorless to pale yellow | [Water Solubility ]
soluble | [BRN ]
1700256 | [Dielectric constant]
22.5（23℃） | [InChI]
InChI=1S/C2H6O3S/c1-4-6(3)5-2/h1-2H3 | [InChIKey]
BDUPRNVPXOHWIL-UHFFFAOYSA-N | [SMILES]
S(OC)(OC)=O | [CAS DataBase Reference]
616-42-2(CAS DataBase Reference) | [NIST Chemistry Reference]
Sulfurous acid, dimethyl ester(616-42-2) | [EPA Substance Registry System]
616-42-2(EPA Substance) |
| Safety Data | Back Directory | [Symbol(GHS) ]
 
GHS02,GHS07 | [Signal word ]
Warning | [Hazard statements ]
H226-H315-H319-H335 | [Precautionary statements ]
P210-P302+P352-P305+P351+P338 | [Hazard Codes ]
Xi | [Risk Statements ]
R10:Flammable.
R36/37/38:Irritating to eyes, respiratory system and skin . | [Safety Statements ]
S26:In case of contact with eyes, rinse immediately with plenty of water and seek medical advice .
S36:Wear suitable protective clothing .
S24/25:Avoid contact with skin and eyes .
S16:Keep away from sources of ignition-No smoking . | [RIDADR ]
UN 1993 3/PG 3
| [WGK Germany ]
3
| [RTECS ]
WT3512000
| [TSCA ]
TSCA listed | [HazardClass ]
3.2 | [PackingGroup ]
III | [HS Code ]
29209085 | [Storage Class]
3 - Flammable liquids | [Hazard Classifications]
Eye Irrit. 2
Flam. Liq. 3
Skin Irrit. 2
STOT SE 3 |
| Hazard Information | Back Directory | [Chemical Properties]
CLEAR COLORLESS TO PALE YELLOW LIQUID | [Uses]
The conformations and vibrational spectra of dimethyl sulfite was studied by matrix-isolation fourier transform infrared spectroscopy and to study its conformational selective aggregation. It may be used in organic synthesis. | [Application]
The conformations and vibrational spectra of dimethyl sulfite was studied by matrix-isolation fourier transform infrared spectroscopy and to study its conformational selective aggregation.
Dimethyl sulfite may be used in organic synthesis. It is used as an additive in some polymers to prevent oxidation. It is also a potentially useful high energy battery electrolyte solvent. | [Definition]
ChEBI: Dimethyl sulfite is a sulfite ester. | [Preparation]
Dimethyl sulfite is prepared from a 1:2 ratio of thionyl chloride and methanol. The reaction can be catalyzed by tertiary amine bases and likely proceeds via the chlorosulfinate (MeOS(O)Cl), this intermediate will exist only fleetingly in the presence of methanol and as such its decomposition to methyl chloride and sulfur dioxide (via the slower SNi mechanism) is not observed to any great extent.
SOCl2 + 2 CH3OH → (CH3O)2SO + 2 HCl | [General Description]
Dimethyl sulfite is an insect repellent and also experimentally identified as a mutagenic agent. |
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