CH3SCH2CH3

CH3SCH2CH3 is a simple sulfide (thioether) with the formula C3H8S. It consists of a sulfur atom bonded to two alkyl groups: a methyl group and an ethyl group. The compound is commonly referred to as methyl ethyl sulfide or ethyl methyl sulfide, reflecting the two alkyl substituents on sulfur.

Properties and characteristics

As a liquid at room temperature, CH3SCH2CH3 is relatively volatile and has a characteristic odor typical of many thioethers. It is soluble in organic solvents but only sparingly soluble in water, reflecting its moderate hydrophobicity. The compound is flammable and should be handled with appropriate precautions in a well-ventilated area or fume hood.

Synthesis

CH3SCH2CH3 can be prepared by alkylating a thiolate ion with an alkyl halide. For example, a sodium methyl sulfide (CH3S− Na+) can react with an ethyl halide (such as ethyl bromide) to form CH3SCH2CH3, along with sodium halide as a byproduct. This nucleophilic substitution is a common route for preparing dialkyl sulfides.

Applications

Methyl ethyl sulfide serves mainly as a laboratory solvent and as an intermediate in organic synthesis. Like other thioethers, it can act as a reagent or protecting group in various chemical transformations. Its odor and volatility limit its use in large-scale applications, and it is typically handled in controlled environments.

Safety and handling

As a flammable liquid with a strong odor, CH3SCH2CH3 requires proper storage in closed containers away from heat sources. Use with adequate ventilation and personal protective equipment to minimize inhalation or skin contact. Avoid prolonged exposure; consult material safety data sheets for detailed information.