DMDS; Methyl disulfide

• • • • • • Dimethyl Disulfide
            CasNo.: 624-92-0

            Synonyms: DMDS; Methyl disulfide

            MF: C2H6S2
            MW: 94.2
            UN Number: 2381
            Hazard Class: 3
            
            

             ANALYSIS ITEMS    STANDARD
             Limpid liquid from colorless to pale yellow
            Purity %    ≥99.8
            Sulphur Content %    ≥68.0
            Water Content %    ≤0.05
            Methyl Mercaptan %    ≤0.01
            Density (20/4℃)    1062~1065
            Dimethyl polysulfide    <0.2%
            Odor    odorous
            Refractive index    n20/D 1.525(lit.)
            Viscosity    0.62CP@ 20℃
            Flash point    15℃
            Decomposition temperature    180℃
            Boiling point    109℃-110℃
            Solubility    miscible with ethanol, ethyl ether, alcohol          
            

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          •   Product  Description:

            Dimethyl Disulfide (DMDS) is a flammable organic sulfur compound, colorless when pure and pale yellow with impurities. It has a higher density than water, is slightly soluble in water, and produces vapors heavier than air. As a reducing agent, it decomposes under heat or acid exposure, releasing toxic sulfur oxides. It is widely present in nature, emitted by bacteria, plants, and other organisms as part of the sulfur cycle. In terms of applications, dimethyl disulfide is used industrially as a catalyst sulfiding agent, in agriculture as a soil fumigant, and in the food industry to enhance flavors. Though versatile, its toxicity and irritant properties require careful handling.

            
            

            Chemical Industry：Dimethyl Disulfide (DMDS) is widely used as a solvent and key intermediate in the chemical industry, particularly in the synthesis of the pesticide Fenthion, an organophosphorus compound used for pest control in agriculture. Its chemical properties make it effective for facilitating various organic reactions.

            Petroleum Refining: In the petroleum refining industry, DMDS serves as a critical catalyst presulfiding activator, essential for hydrodesulfurization, hydrotreating, and hydrocracking processes. It ensures efficient sulfur removal and enhances catalyst performance in refining naphtha, gasoline, kerosene, diesel, and atmospheric heavy oil, contributing to cleaner fuel production.

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