A5460912
Methyl sulfide , Waterless grade, ≥99.0% , 75-18-3
Synonym(s):
Dimethyl sulfide;DMS;Methyl sulfide
CAS NO.：75-18-3
Empirical Formula: C2H6S
Molecular Weight: 62.13
MDL number: MFCD00008562
EINECS: 200-846-2
Update time: 2022-07-08
PRODUCT Properties
| Melting point: | −98 °C(lit.) |
| Boiling point: | 38 °C(lit.) |
| Density | 0.846 g/mL at 25 °C(lit.) |
| vapor density | 2.1 (vs air) |
| vapor pressure | 26.24 psi ( 55 °C) |
| refractive index | n |
| FEMA | 2746 | METHYL SULFIDE |
| Flash point: | −34 °F |
| storage temp. | Store at +2°C to +8°C. |
| solubility | Miscible with alcohols, ethers, esters, ketones, aliphatic and aromatic hydrocarbons. |
| form | Liquid |
| Specific Gravity | 0.849 (20/4℃) |
| color | Clear colorless |
| Odor | Ethereal, permeating; disagreeable; offensive. |
| Odor Threshold | 0.003ppm |
| explosive limit | 2.2-19.7%(V) |
| Odor Type | sulfurous |
| JECFA Number | 452 |
| Merck | 14,6123 |
| BRN | 1696847 |
| Dielectric constant | 6.3（20℃） |
| Exposure limits | ACGIH: TWA 10 ppm |
| Stability: | Stable. Incompatible with strong oxidizing agents. Highly flammable - note low boiling point, low flash point, and wide explosion limits. Mixtures with air are potentially explosive. Incompatible with strong oxidizing agents. Use in UK regulated by LPG Regulations 1978 in accordance with HSE guidance note CS17. |
| InChIKey | QMMFVYPAHWMCMS-UHFFFAOYSA-N |
| LogP | 0.89 |
| CAS DataBase Reference | 75-18-3(CAS DataBase Reference) |
| NIST Chemistry Reference | Dimethyl sulfide(75-18-3) |
| EPA Substance Registry System | Dimethyl sulfide (75-18-3) |
Description and Uses
Dimethyl sulfide, a sulfur ether compound, shares structural and property similarities with dimethyl ether. It is a colorless, volatile liquid that exhibits a distinct seafood-like odor. This compound is naturally generated through protein decomposition and serves as one of the culprits responsible for the fishy scent often associated with seafood.
Dimethyl sulfide undergoes thiolation reaction with hydrogen sulfide (H2S) in the presence of tungsten-zirconia (WO3/ZrO2) catalyst to form methanethiol.
Safety
| Symbol(GHS) |  GHS02 |
| Signal word | Danger |
| Hazard statements | H225 |
| Precautionary statements | P210-P233-P240-P241-P242-P243 |
| Hazard Codes | F,Xn,Xi |
| Risk Statements | 11-22-37/38-41-36 |
| Safety Statements | 7-9-16-29-33-36/39-26 |
| RIDADR | UN 1164 3/PG 2 |
| WGK Germany | 1 |
| RTECS | PV5075000 |
| F | 13 |
| Autoignition Temperature | 402 °F |
| TSCA | Yes |
| HS Code | 2930 90 98 |
| HazardClass | 3 |
| PackingGroup | II |
| Hazardous Substances Data | 75-18-3(Hazardous Substances Data) |
| Toxicity | LD50 orally in Rabbit: 535 mg/kg LD50 dermal Rabbit > 5000 mg/kg |
