Methylthioethane Chemical Properties

Melting point:

-106 °C (lit.)

Boiling point:

66-67 °C (lit.)

Density 

0.842 g/mL at 25 °C (lit.)

vapor pressure 

272 mm Hg ( 37.7 °C)

refractive index 

n20/D 1.440(lit.)

FEMA 

3860 | METHYL ETHYL SULFIDE

Flash point:

5 °F

storage temp. 

Flammables area

form 

liquid

Specific Gravity

0.842

color 

Colorless to Light yellow

Odor

at 0.10 % in propylene glycol. sulfury garlic tomato coffee pyridene cabbage vegetable meaty

Odor Type

sulfurous

Odor Threshold

0.00023ppm

Water Solubility 

Miscible with alcohols and oils. Immiscible with water.

JECFA Number

453

BRN 

1696871

LogP

1.54

CAS DataBase Reference

624-89-5(CAS DataBase Reference)

NIST Chemistry Reference

Ethane, (methylthio)-(624-89-5)

EPA Substance Registry System

Ethyl methyl sulfide (624-89-5)

Safety Information

Hazard Codes 

F

Risk Statements 

11

Safety Statements 

16-23-24/25

RIDADR 

UN 1993 3/PG 2

WGK Germany 

3

F 

13

TSCA 

Yes

HazardClass 

3

PackingGroup 

II

HS Code 

29309090

MSDS

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Methylthioethane Usage And Synthesis

Description

Methylthioethane, also known as Ethyl methyl sulfide (abbreviation EMS), is an ether compound with a sulphur-type odour that can be used as a food additive, odourant, and fuel. The reaction products of photolysis of EMS, in decreasing order of importance, are C2H6, CH3SSC2H5, C2H6, CH3SSC2H5, C2H5SSC2H5, CH4, CH3SCH3, C2H5SC2H5, C3H8, C2H4, CH3SSCH3, C4H10, C2H5SH, and CH3SH. In addition, the destruction efficiencies of the EMS pyrolysis and oxidation in a flow reactor were 50% and 99%, respectively. Hydroperoxides and the corresponding peroxyl radicals are important intermediates in the partial oxidation of EMS during atmospheric chemistry and combustion processes.

Chemical Properties

clear colorless liquid

Chemical Properties

Methyl ethyl sulfide has a cabbage-like odor.

Occurrence

Reported found in tomato, cooked chicken, beef and pork, rum, bourbon, whiskey, cocoa and coffee

Uses

Ethyl Methyl Sulfide is used as a corrosion inhibitor for zinc metal which finds wide applications like electrode material in batteries, sacrificial anodes and metallic coatings. It is used in mixtures designed to odorize natural gas and is made to by-pass injection system.

Aroma threshold values

Aroma characteristics at 0.1%: sulfurous, tomato and cabbage vegetative with dimethyl sulfide, meaty and metallic nuances.

Taste threshold values

Taste characteristics at 0.25 to 2 ppm: sulfurous, vegetative, dimethyl sulfide-like sweet corn notes, eggy, meaty and clam nuances

General Description

Microwave spectra of the trans isomer of ethyl methyl sulfide and its 10 isotopic species has been investigated. Chlorination of ethyl methyl sulfide with N-chlorosuccinimide and sulfuryl chloride has been reported.

Methylthioethane(624-89-5)Related Product Information

• 1,1'-Thiobisethane
• Methylparaben
• Methyl acrylate
• Sodium sulfide
• Bensulfuron methyl
• Dimethyl sulfide
• Kresoxim-methyl
• Hydrogen Sulfide
• 2-Butanone
• CARBONYL SULFIDE
• Methyl 2-hydroxyethyl cellulose
• Methyl
• Diethyl ether
• Ethylthiocyanate
• DI-N-BUTYL SULFOXIDE
• 4-(ETHYLTHIO)BENZOIC ACID
• Benzyl thiocyanate
• 2-Chloroethyl ethyl sulfide