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Dimethyl disulfide

CAS Number
624-92-0
EC Number
210-871-0
Chemical Formula
C2H6S2
Molecular Weight
94.20 g/mol

Description

Dimethyl disulfide (CAS 624-92-0 ), commonly known as DMDS, is an organosulfur compound used across refining, agriculture, and flavor industries. Methyl disulfide is a recognized alternative name in fragrance and flavor sourcing contexts. It functions primarily as a sulfiding agent for catalysts, a soil fumigant, and a flavoring ingredient. In petroleum refining, DMDS presulfides hydroprocessing catalysts before startup, activating them efficiently. This process occurs without requiring hazardous hydrogen sulfide gas handling. Food and flavor manufacturers use it as a FEMA 3536 -approved flavoring agent, contributing savory, onion, and cooked-meat notes. These notes are essential for processed foods and seasonings. In agriculture, it acts as a soil fumigant and nematicide, replacing methyl bromide in pre-plant treatments for high-value crops. Biotechnology and fermentation applications also employ DMDS as a sulfur source in microbial culture media. This is particularly useful where controlled sulfur supplementation is required for specific growth. Dimethyl disulfide is supplied as a clear to pale yellow liquid, typically in drum, IBC, and bulk tanker quantities. Food-grade material is available meeting strict industry specifications for safety. Technical and catalyst-grade material is sourced for refinery and agricultural applications. Purity grades commonly range from 98% to 99%+ depending on the specific end-use requirements of the client. Contact us for supply of Dimethyl disulfide Request Quote

Other Names (Synonyms)

Sulfa-hitech 0382 | Sulfa-hitech | Methyl disulfide | DMDS | Disulfide dimethyl | 2,3-dithiabutane | (methyldithio)methane | (methyldisulfanyl)methane

Key Technical Features

  • High Purity Grade standard
  • Consistent Batch Quality
  • Full Regulatory & REACH Support
  • Global Logistics Network enabled

Physical Properties

Melting Point-85 °C
Boiling Point109.8 °C
Density1.0625 g/cm³ @ Temp: 20 °C
Flash Point76 °F
Appearancecolourless to yellow liquid with a very unpleasant smell
ColorClear yellow
Odorat 0.10 % in propylene glycol. sulfurous vegetable cabbage onion
FormLiquid
Water Solubility<0.1 g/100 mL at 20 ºC
Vapor Pressure22 mm Hg ( 20 °C)
Refractive Indexn 20/D 1.525(lit.)
Log P1.91 at 20℃

Safety & Handling

Danger
GHS02· FlammableGHS06· ToxicGHS08· Health HazardGHS09· EnvironmentGHS07· Irritant

Hazard Statements

H225Highly Flammable liquid and vapor
H301Toxic if swallowed
H302Harmful if swallowed
H312Harmful in contact with skin
H315Causes skin irritation
H317May cause an allergic skin reaction
H319Causes serious eye irritation
H320Causes eye irritation
H330Fatal if inhaled
H331Toxic if inhaled
H335May cause respiratory irritation
H336May cause drowsiness or dizziness
H361Suspected of damaging fertility or the unborn child
H370Causes damage to organs
H372Causes damage to organs through prolonged or repeated exposure
H373May causes damage to organs through prolonged or repeated exposure
H400Very toxic to aquatic life
H401Toxic to aquatic life
H410Very toxic to aquatic life with long lasting effects
H411Toxic to aquatic life with long lasting effects

Precautionary Statements

P203Obtain, consult and follow expert instructions for use.
P210Keep away from heat, hot surfaces, sparks, open flames and other ignition sources. No smoking.
P233Keep container tightly closed.
P240Ground and bond container and receiving equipment.
P241Use explosion-proof equipment.
P242Use non-sparking tools.
P243Take action to prevent static discharges.
P260Do not breathe dust/fume/gas/mist/vapours/spray.
P261Avoid breathing dust/fume/gas/mist/vapours/spray.
P264Wash … thoroughly after handling.
P270Do not eat, drink or smoke when using this product.
P271Use only outdoors or in a well-ventilated area.
P272Contaminated work clothing should not be allowed out of the workplace.
P273Avoid release to the environment.
P280Wear protective gloves/protective clothing/eye protection/face protection.
P284In case of inadequate ventilation wear respiratory protection.
P316Get emergency medical help immediately.
P317Get emergency medical help.
P318IF exposed or concerned, get medical advice.
P319Get medical advice/attention if you feel unwell.
P320Specific treatment is urgent (see … on this label).
P321Specific treatment (see … on this label).
P330Rinse mouth.
P391Collect spillage.
P405Store locked up.
P501Dispose of contents/container in accordance with local regulations.
P265Wash … thoroughly after handling.
P316Get emergency medical help immediately.
P317Get emergency medical help.
P352IF ON SKIN: Wash with plenty of water.
P340IF INHALED: Remove person to fresh air and keep comfortable for breathing.
P316Get emergency medical help immediately.
P317Get emergency medical help.
P317Get emergency medical help.
P317If eye irritation persists: Get medical advice/attention. Get emergency medical help.
P364Take off contaminated clothing and wash it before reuse.
P378Use … for extinction.
P233Store in a well-ventilated place. Keep container tightly closed.
P235Store in a well-ventilated place. Keep cool.
P353IF ON SKIN (or hair): Take off immediately all contaminated clothing. Rinse skin with water/shower.
P338IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing.

Trade & Regulatory

HS Code29309070
UN Number2381
ADR Class3
Packing GroupII
Storage Class3 - Flammable liquids
WGK (Germany)2