Dimethyl disulfide

Dimethyl disulfide (CAS 624-92-0), commonly known as DMDS, is an organosulfur compound used across refining, agriculture, and flavor industries. Also called methyl disulfide.

Where is Dimethyl disulfide used?

• Petroleum refining: presulfiding hydroprocessing catalysts before startup, activating them efficiently
• Agriculture: soil fumigant and nematicide replacing methyl bromide in pre-plant treatments for high-value crops
• Food and flavor: FEMA 3536-approved flavoring agent contributing savory, onion, and cooked-meat notes for processed foods and seasonings
• Biotechnology and fermentation: sulfur source in microbial culture media where controlled sulfur supplementation is required
• It functions as a sulfiding agent for catalysts and a flavoring ingredient.

Good to know: Presulfiding occurs without requiring hazardous hydrogen sulfide gas handling. Purity grades commonly range from 98% to 99%+ depending on end-use requirements.

Commercial specifications

• Purity grades commonly range from 98% to 99%+ depending on end-use requirements