Dimethyl Disulfide CAS 624-92-0 Industrial Sulfur Compound for Chemical Synthesis & Odorant

What Is Dimethyl Disulfide? Definition & Chemical Properties？

Dimethyl Disulfide, commonly abbreviated as DMDS, is an organic sulfur compound with a distinctive pungent odor. It is a colorless to pale yellow volatile liquid, slightly soluble in water and fully soluble in most organic solvents. As a typical dialkyl disulfide, it features stable chemical properties and high reactivity, making it a fundamental raw material in fine chemical, petrochemical, pesticide and fragrance industries. It is also well-known as an effective odorant, sulfurizing agent and intermediate for organic synthesis.

Dimethyl Disulfide Synonyms, Formula

Product Name:       Dimethyl Disulfide

Identification

Synonyms            DMDS; disulfuredemethyle; methyldithiomethane

Molecular Formula C₂H₆S₂

Molecular Weight  94.2

CAS Number          624-92-0

EINECS/ELINCS   210-871-0

Properties

Appearance            Light yellow transparent liquid

Boiling Point          109 °C(lit.)

This molecule consists of two methyl groups connected by a disulfide bond. Its unique sulfur-containing structure gives it excellent performance in vulcanization, synthesis and odor enhancement, which supports its wide range of industrial applications.

Key Advantages of Dimethyl Disulfide (DMDS)

DMDS has high chemical activity and good compatibility with various chemical raw materials. It provides stable sulfur supply for catalyst sulfidation. With low impurity content in industrial grade, it ensures consistent quality for downstream products. It is easy to transport and store as a conventional liquid chemical, and has become a cost-effective sulfur raw material globally for chemical manufacturing and petrochemical processing.

Specification

Items	Specifications
Appearance	Clear
Purity(%)	99.5 min
Color(APHA)	120 max
Water   Content(%)	0.06 max
MethylMercaptan(%)	0.06 max
Density(20/4℃)	1.060-1.065

Main Industrial Applications of Dimethyl Disulfide

Catalyst Sulfurizing Agent for Petrochemical Industry

Dimethyl Disulfide is a dominant sulfurizing agent for hydrotreating catalysts in oil refineries. It is used to presulfide hydrodesulfurization, hydrodenitrogenation and hydrogenation catalysts. It can fully activate metal catalysts and extend their service life, widely applied in crude oil processing, gasoline and diesel upgrading processes.

Organic Synthesis Intermediate for Fine Chemicals

As an important organic intermediate, DMDS is used to synthesize various sulfur-containing chemicals, pesticides and rubber additives. It participates in multiple organic reactions to produce thioethers, thiols and other fine chemical products, playing an irreplaceable role in the fine chemical chain.

Odorant & Warning Agent for Gas & Fuel

Due to its strong and recognizable odor, Dimethyl Disulfide is widely used as an odorant for natural gas, liquefied petroleum gas and industrial fuels. It adds a distinct smell to odorless combustible gas, enabling people to quickly detect gas leakage and ensure production and residential safety.

 Flavor & Fragrance Additive

In the food flavor and daily fragrance industry, DMDS is applied to prepare special essences. It provides characteristic sulfur-containing aroma for certain food flavors, seasonings and artificial fragrances, strictly used in compliance with food-grade usage standards.

Raw Material

It acts as a key raw material for manufacturing some insecticides, fungicides and intermediates. Its sulfur-containing molecular structure helps form active ingredients with biological activity, supporting the production of agrochemical and medical products.

Packing and Storage

Packing   In 200 kg drum or 1000 kg net IBC

Storage    Keep container tightly tied. Store in cool, dry conditions and away from oxidizing agents.

Safety Information

UN2381, Class 3(6.1), P.G. II