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Dimethyl disulfide

Chemical Properties Usage Production method Quantity restrictions Toxicity Flammability hazard characteristics storage Fire extinguishing agent
Dimethyl disulfide
Dimethyl disulfide structure
Chemical Name:
Dimethyl disulfide
Molecular Formula:
Formula Weight:
MOL File:

Dimethyl disulfide Properties

Melting point:
-85 °C
Boiling point:
109 °C(lit.)
vapor density 
3.24 (vs air)
vapor pressure 
22 mm Hg ( 20 °C)
refractive index 
n20/D 1.525(lit.)
Flash point:
76 °F
storage temp. 
Flammables area
Clear yellow
Specific Gravity
1.0647 (20/4℃)
explosive limit
Odor Threshold
Water Solubility 
<0.1 g/100 mL at 20 ºC
JECFA Number
Stable. Incompatible with strong bases, strong oxidizing agents, strong reducing agents. Flammable.
CAS DataBase Reference
624-92-0(CAS DataBase Reference)
NIST Chemistry Reference
Disulfide, dimethyl(624-92-0)
EPA Substance Registry System
Methyl disulfide (624-92-0)
  • Risk and Safety Statements
Signal word  Danger
Hazard statements  H225-H302-H319-H331-H335-H411-H317-H400-H410
Precautionary statements  P210-P261-P273-P305+P351+P338-P311-P280-P304+P340+P312-P403+P233-P303+P361+P353-P405-P501a
Hazard Codes  F,Xn,N,T+
Risk Statements  11-20/22-36-51/53-36/37/38-26-22-36/37
Safety Statements  26-61-45-38-36/37/39-28A-16-60-57-39-29
RIDADR  UN 2381 3/PG 2
WGK Germany  2
RTECS  JO1927500
Autoignition Temperature 304 °C
HazardClass  3
PackingGroup  II
HS Code  29309070
Toxicity LD50 orally in Rabbit: 290 - 500 mg/kg
NFPA 704
3 0

Dimethyl disulfide price More Price(17)

Manufacturer Product number Product description CAS number Packaging Price Updated Buy
Sigma-Aldrich 471569 Dimethyl disulfide ≥99.0% 624-92-0 1l $50 2019-12-02 Buy
Sigma-Aldrich 320412 Dimethyl disulfide 99% 624-92-0 1l $50 2019-12-02 Buy
Alfa Aesar L09679 Dimethyl disulfide, 99% 624-92-0 250g $24.7 2019-12-02 Buy
Alfa Aesar L09679 Dimethyl disulfide, 99% 624-92-0 1000g $60.5 2019-12-02 Buy
Sigma-Aldrich 8.20791 Dimethyl disulfide for synthesis. CAS 624-92-0, chemical formula CH SSCH ., for synthesis 624-92-0 8207911000 $68.7 2019-12-02 Buy

Dimethyl disulfide Chemical Properties,Uses,Production

Chemical Properties

Light yellow transparent liquid, malodorous, insoluble in water, Soluble in ethanol, ethyl ether and acetic acid.


In China: International uses:

Production method

Dimethyl disulfide can be prepared by the reaction between imethyl sulfate and sodium sulfide. under stirring, sulfur powder  was added into sodium sulfide solution. The above reaction system was heated  Up to 80-90℃, after reaction for 1 h, cooled to about 30 ℃. Dimethyl sulfate was dropped into the reaction system and the reaction was continued for 2h. Then, distillation, stratification, Separating waste alkali liquor, then through distillation and final products are prepared.
In industry,dimethyl sulfate method is adopted to synthesize dimethyl disulfide. Na2S+S→Na2S2Na2S2+(CH3)2SO4→CH3SSCH3+Na2SO4
Solid sodium sulfide and water are dropped into the reaction kettle , heated , temperature is controlled in the range of  the of 50 ~60 ℃, dissolving sodium sulfide, adding equimolar sulfur, remaining the temperature for 1h, cooling to 45℃, dripping dimethyl sulfate into the reaction kettle, remaining the temperature for 1h, then through distillation dimethyl sulfate can be prepared.
It also can be prepared by the reaction between Magnesium methyl iodide and disulfur dichloride.
It can be prepared by the reaction between sodium disulfide and Methyl sodium sulfate.
It can be prepared by heating Methyl sodium thiosulfate which is the reaction product of methyl bromide and sodium thiosulfate.

Quantity restrictions

bakery product 16.9;Frozen dairy products 4.8;Meat products 2.2;soft sweets 9.4;Jelly and pudding 8.3;



Flammability hazard characteristics

Flammable in case of fire, high temperature and oxidant, decomposing out toxic sulfur oxide gas in case of acid or high heat.


Store in a cool, well-ventilated warehouse, separated with oxidant, acid.

Fire extinguishing agent

Dry powder, dry sand, carbon dioxide fire extinguishing agent, foam, 1211 fire extinguishing agent.


Methyl disulfide has a diffuse intense onion odor. It is nonlachrymatory. May be prepared from magnesium methyl iodide and S2C12, or from Na2S2 and sodium methyl sulfate; also from methyl bromide and sodium thiosulfate, after which the resulting sodium methylthiosulfate is heated to yield dimethyl disulfide.

Chemical Properties

Methyl disulfide has a diffuse, intense onion odor. This compound is nonlacrimatory

Chemical Properties

colourless to yellow liquid with a very unpleasant smell


Reported found in sour cherry, guava, melon, peach, pineapple, strawberry, cabbage, kohlrabi, onion, garlic, shallot, leek, chive, peas, potato, rutabaga, tomato, parsley, breads, many cheeses, yogurt, milk, egg, fish, meats, hop oil, beer, Scotch whiskey, cognac, grape wines, cocoa, coffee, peanut, peanut butter, pecan, potato chips, oats, soybean, beans, mushrooms, trassi, macadamia nut, mango, cauliflower, broccoli, brussels sprouts, rice, radish, sukiyaki, sake, watercress, malt, wort, krill, southern pea, loquat, sapodilla, shrimp, oyster, crab, crayfish, clam, scallops and squid.


From magnesium methyl iodide and S2Cl2, or from S2S2 and sodium methyl sulfate; also from methyl bromide and sodium thiosulfate, after which the resulting sodium methylthiosulfate is heated to yield dimethyl disulfide.


ChEBI: An organic disulfide that is methane in which one of the hydrogens has been replaced by a methyldisulfanyl group.

Aroma threshold values

Detection: 0.16 to 1.2 ppb. Recognition: 90 ppb

General Description

A colorless oily liquid with a garlic-like odor. Denser than water and slightly soluble in water. Flash point 40°F. Vapors heavier than air. May irritate skin and eyes. Used to make other chemicals.

Air & Water Reactions

Highly flammable. Slightly soluble in water.

Reactivity Profile

DMDS is a reducing agent. A dangerous fire hazard when exposed to oxidizing materials. Emits toxic fumes of oxides of sulfur when heated to decomposition or on contact with acids [Sax, 9th ed., 1996, p. 1320].

Health Hazard

May cause toxic effects if inhaled or absorbed through skin. Inhalation or contact with material may irritate or burn skin and eyes. Fire will produce irritating, corrosive and/or toxic gases. Vapors may cause dizziness or suffocation. Runoff from fire control or dilution water may cause pollution.

Fire Hazard

HIGHLY FLAMMABLE: Will be easily ignited by heat, sparks or flames. Vapors may form explosive mixtures with air. Vapors may travel to source of ignition and flash back. Most vapors are heavier than air. They will spread along ground and collect in low or confined areas (sewers, basements, tanks). Vapor explosion hazard indoors, outdoors or in sewers. Runoff to sewer may create fire or explosion hazard. Containers may explode when heated. Many liquids are lighter than water.

Safety Profile

Poison by inhalation. A very dangerous fire hazard when exposed to heat, flame, or oxidzers. Can react vigorously with oxiduing materials. See also SULFIDES.

Purification Methods

Pass it through neutral alumina before use. [Trost Chem Rev 78 363 1978, Beilstein 1 IV 1281.]

Dimethyl disulfide Preparation Products And Raw materials

Raw materials

Preparation Products

Dimethyl disulfide Suppliers

Global( 281)Suppliers
Supplier Tel Fax Email Country ProdList Advantage
Langfang Hawk Technology & Development Co., Ltd.
0316-2224727,2224728,2224729 CHINA 25 58
Shandong chuangyingchemical Co., Ltd.
13156170209 CHINA 4404 58
Capot Chemical Co.,Ltd.
+86-571-85864795 China 19920 60
Henan Tianfu Chemical Co.,Ltd.
0371-55170693 CHINA 22631 55
Hefei TNJ Chemical Industry Co.,Ltd.
86-0551-65418684 18949823763
86-0551-65418684 China 1892 55
Tianjin Zhongxin Chemtech Co., Ltd.
022-66880086 CHINA 585 58
career henan chemical co
+86-371-86658258 CHINA 30053 58
Chemwill Asia Co.,Ltd.
86-21-51861608;;; CHINA 23978 58
Hubei Jusheng Technology Co.,Ltd.
027-59599243 CHINA 28235 58
Haihang Industry Co.,Ltd
+86 531 8582 1093 CHINA 8729 58

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View Lastest Price from Dimethyl disulfide manufacturers

Image Release date Product Price Min. Order Purity Supply Ability Manufacturer
2020-01-19 Dimethyl Disulfide
US $0.00-0.00 / KG 100g 99.0%+ 100 tons Shaanxi Dideu Medichem Co. Ltd
2019-04-10 Dimethyl disulfide
US $1.00 / g 10g 99.5% 500 Metric Ton/Metric Tons per Month Cangzhou Wanyou New Material Technology Co.,Ltd
2019-07-05 Dimethyl Disulfide
US $0.00-0.00 / Kg/Drum 1KG >99.5% 10000tons Langfang Hawk Technology & Development Co., Ltd.

Dimethyl disulfide Spectrum

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