Dimethyl Disulfide CAS No. 624-92-0

Dimethyl Disulfide (DMDS) 

CAS No.: 624-92-0 | EC No.: 210-871-0

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1. Chemical Identification

Property	Specification
IUPAC Name	(Methyldisulfanyl)methane
Molecular Formula	C₂H₆S₂
Molecular Weight	94.20 g/mol
Appearance	Clear yellow liquid
Density	1.062 g/mL at 25°C
Melting Point	-85°C
Boiling Point	109-110°C
Refractive Index	n<sup>20</sup><sub>D</sub> 1.525
Flash Point	15°C (closed cup)
Explosive Limits	1.1-16.1% (in air)

Synonyms:
DMDS, Methyl disulfide, Dimethyldisulphide

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2. Key Applications

Industrial Solvent

Pesticide Manufacturing: Key intermediate for soil fumigantsPetrochemical Processing:
✓ Coking inhibitor for ethylene crackers
✓ Lubricant additive for extreme pressure performance

Chemical Synthesis

Primary Precursor for:
✓ Methylsulfonyl chloride production
✓ Methanesulfonic acid derivatives

Specialty Uses

Food Industry: Flavoring agent (at regulated levels)Fuel Additive: Sulfur-containing compound for diesel

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3. Product Advantages

✔ High Reactivity – Effective sulfur donor
✔ Multi-functional – Cross-industry applications
✔ Process Efficiency – Reduces coking in refineries

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4. Physical & Chemical Properties

Vapor Pressure: 28 mmHg at 25°CSolubility:Miscible with organic solventsSlightly soluble in water (2.5 g/L)Autoignition Temp.: 300°C

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5. Handling & Storage

Parameter	Requirement
Storage Temp	<25°C (explosion-proof area)
Packaging	180kg steel drums/N₂ blanket
Shelf Life	24 months stabilized
Special Notes	Ground all containers

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6. Safety Information

Danger!

H225: Highly flammable liquid/vaporH315+H319: Causes skin/eye irritationH335: May cause respiratory irritation

Protective Measures:

P210: Keep away from heat/sparks/open flamesP403+P235: Store in well-ventilated placeP303+P361+P353: Skin contact wash procedure

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7. Quality Specifications

Purity: ≥98% (GC)Sulfur Content: 68-70%Water Content: ≤0.1%

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Disclaimer:
This information is for professional use only. Handling requires ATEX-compliant facilities. Users must comply with local regulations for flammable sulfur compounds.

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