Dimethyl disulfide

Details:

Product Information

Item	Content
Product Name	Dimethyl Disulfide
Abbreviation	DMDS
CAS No.	624-92-0
EINECS No.	210-871-0
Molecular Formula	C?H?S?
Molecular Weight	94.2 g/mol
Appearance	Colorless to slightly yellow transparent liquid
Odor	Strong, characteristic odor similar to garlic or rotten cabbage
Purity	≥ 99.5% (Other specifications available upon request)
Packaging	200kg Galvanized Steel Drum / ISO TANK (Customizable)

 

 

 

 

 

 

 

 

 

Product Description

Dimethyl Disulfide (DMDS), CAS No. 624-92-0, is a vital organosulfur compound renowned for its high efficiency and unique chemical properties. It plays an indispensable role in sectors such as petrochemicals, agriculture, and fine chemicals. As a professional chemical supplier, we are committed to providing high-purity, stable-quality DMDS to meet your diverse industrial demands.

At room temperature, DMDS is a slightly yellow, transparent liquid with a strong, characteristic odor. Its primary value lies in its function as a safe and effective "sulfur carrier," decomposing under specific conditions to provide active sulfur. This property makes it the preferred pre-sulfiding agent for hydrocracking and hydrotreating catalysts in refineries and chemical plants worldwide.

 

Key Features & Benefits

• High-Efficiency Sulfiding: Decomposes at lower temperatures to provide active sulfur, effectively protecting and activating catalysts to extend their service life.

• High Sulfur Content: With a high sulfur content of approximately 68%, DMDS offers significant economic benefits compared to other sulfiding agents.

• Enhanced Safety: An ideal and safer-to-handle alternative to highly toxic agents like mercaptans and hydrogen sulfide, improving operational safety.

• Versatile Applications: Used not only for catalyst sulfiding but also as a pesticide intermediate, an effective solvent, and a raw material in specific chemical syntheses.

• Consistent Quality: Our rigorous quality control system ensures that the purity and key parameters of every batch of DMDS meet the highest industry standards.

 

Main Applications

1. Petrochemical Industry:

   • Catalyst Pre-sulfiding: Widely used as a sulfiding agent for catalysts (e.g., Co-Mo, Ni-Mo) in refinery units like hydrotreaters, hydrocrackers, and reformers. It transforms the catalyst into its most active sulfide state while preventing initial deactivation from coking.

   • Furnace Passivation: Used in ethylene crackers to passivate metal surfaces in furnace tubes, inhibiting the formation of carbon monoxide and coke.

2. Agriculture Sector:

   • Soil Fumigant: Acts as an effective, broad-spectrum soil fumigant for controlling nematodes, fungi, insects, and weeds, serving as a viable alternative to methyl bromide.

3. Fine Chemicals:

   • Chemical Intermediate: Used in the synthesis of other sulfur-containing chemicals, such as methanesulfonyl chloride and methanesulfonic acid.

   • Solvent: Functions as a non-protic, medium-polarity solvent in certain chemical reactions.

4. Flavors & Fragrances:

   • In extremely low concentrations, it can be used as a food additive to impart onion or garlic-like flavors (subject to relevant regulations).

 

Technical Specifications

Analysis Item	Specification
Appearance	Colorless to slightly yellow transparent liquid
Purity, % by GC	≥ 99.5
Moisture, %	≤ 0.1
Mercaptan, %	≤ 0.2
Density, g/cm³ (20°C)	1.058 - 1.065
Note: The above are typical values. Please contact us for a Certificate of Analysis (COA) for specific batches.

 

 

 

 

Packaging & Storage

• Packaging: Standard packaging includes 200 kg/drum (internally coated steel drums or HDPE drums) or 20-24 MT/ISO Tank. Custom packaging solutions are available based on order volume.

• Storage: Store in a cool, dry, well-ventilated warehouse away from fire and heat sources. The storage temperature should not exceed 30°C. Keep separate from oxidants, acids, and alkalis. Handle with care to prevent damage to packaging and containers.

 

Why Choose Us?

• Reliable Supply: Leveraging a robust supply chain network, we guarantee a stable and long-term supply of DMDS.

• Quality Assurance: Every batch is rigorously tested by GC analysis, and a full Certificate of Analysis (COA) is provided.

• Professional Service: Our experienced sales and technical teams offer comprehensive support, from product inquiries to logistics.

• Competitive Pricing: We optimize our procurement and operational costs to offer you highly competitive market prices.

Contact us today for the latest quotation and product samples!