274380

Dimethyl sulfide

anhydrous, ≥99.0%

• Synonym(s): DMS, Methyl sulfide
• Linear Formula: (CH₃)₂S
• CAS Number: 75-18-3
• Molecular Weight: 62.13
• Beilstein/REAXYS Number: 1696847
• EC Number: 200-846-2
• MDL number: MFCD00008562
• UNSPSC Code: 12352112
• PubChem Substance ID: 57648244
• NACRES: NA.21

Properties

• grade: anhydrous
• Quality Level: 100
• vapor density: 2.1 (vs air)
• vapor pressure: 26.24 psi ( 55 °C); 7.79 psi ( 20 °C)
• assay: ≥99.0%
• form: liquid
• autoignition temp.: 402 °F
• expl. lim.: 19.7 %
• impurities: <0.003% water; <0.005% water (100 mL pkg)
• evapn. residue: <0.0005%
• refractive index: n20/D 1.435 (lit.)
• bp: 38 °C (lit.)
• mp: −98 °C (lit.)
• solubility: H₂O: soluble 7.28 g/L at 20 °C
• density: 0.846 g/mL at 25 °C (lit.)
• SMILES string: CSC
• InChI: 1S/C2H6S/c1-3-2/h1-2H3
• InChI key: QMMFVYPAHWMCMS-UHFFFAOYSA-N
• Gene Information: rat ... Maoa(29253) , Maob(25750)

Description

General description

Dimethyl sulfide is the major biogenic, volatile sulfur compound that is released from the ocean to the atmosphere. It plays a main role in the global sulfur cycle.

Application

Dimethyl sulfide undergoes thiolation reaction with hydrogen sulfide (H₂S) in the presence of tungsten-zirconia (WO₃/ZrO₂) catalyst to form methanethiol.

Safety Information

• pictograms: GHS02
• signalword: Danger
• hcodes: H225
• pcodes: P210 - P233 - P240 - P241 - P242 - P243
• Hazard Classifications: Flam. Liq. 2
• Storage Class: 3 - Flammable liquids
• wgk_germany: WGK 1
• flash_point_f: -32.8 °F - closed cup
• flash_point_c: -36 °C - closed cup
• ppe: Eyeshields, Faceshields, Gloves