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Dimethyl sulfide

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CAS:75-18-3
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CAS:75-18-3
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CAS:75-18-3
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CAS:75-18-3
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Products Intro: Product Name:Dimethyl sulfide
CAS:75-18-3

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  • Dimethyl sulfide
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  • 2024-10-24
  • CAS:75-18-3
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  • Purity: 99%
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  • Dimethyl sulfide
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Dimethyl sulfide Basic information
Product Name:Dimethyl sulfide
Synonyms:Dimethyl sulfide, DMS, Methyl sulfide;DMS, Methyl sulfide;Dinaethlvl Sulfide;Dimethyl sulfide anhydrous, >=99.0%;Dimethyl Sulfide(FEMA No.2746);Methylsulfide,99%;2-Thiopropane;Dimethyl monosulfide
CAS:75-18-3
MF:C2H6S
MW:62.13
EINECS:200-846-2
Product Categories:Organics;sulfide Flavor;Allium cepa (Onion);Allium sativum (Garlic);Building Blocks;Chemical Synthesis;Nutrition Research;Organic Building Blocks;Phytochemicals by Plant (Food/Spice/Herb);Sulfides/Disulfides;Sulfur Compounds;Bioactive Small Molecules;Cell Biology;DIG-DY;Amber Glass Bottles;Reagent;Solvent Bottles;Solvent Packaging Options;Solvents;solvent;Sulfides flavors
Mol File:75-18-3.mol
Dimethyl sulfide Structure
Dimethyl sulfide Chemical Properties
Melting point −98 °C(lit.)
Boiling point 38 °C(lit.)
density 0.846 g/mL at 25 °C(lit.)
vapor density 2.1 (vs air)
vapor pressure 26.24 psi ( 55 °C)
refractive index n20/D 1.435(lit.)
FEMA 2746 | METHYL SULFIDE
Fp −34 °F
storage temp. Store at +2°C to +8°C.
solubility Miscible with alcohols, ethers, esters, ketones, aliphatic and aromatic hydrocarbons.
form Liquid
color Clear colorless
Specific Gravity0.849 (20/4℃)
OdorEthereal, permeating; disagreeable; offensive.
explosive limit2.2-19.7%(V)
Odor Threshold0.003ppm
Odor Typesulfurous
JECFA Number452
Merck 14,6123
BRN 1696847
Dielectric constant6.3(20℃)
Exposure limitsACGIH: TWA 10 ppm
Stability:Stable. Incompatible with strong oxidizing agents. Highly flammable - note low boiling point, low flash point, and wide explosion limits. Mixtures with air are potentially explosive. Incompatible with strong oxidizing agents. Use in UK regulated by LPG Regulations 1978 in accordance with HSE guidance note CS17.
InChIKeyQMMFVYPAHWMCMS-UHFFFAOYSA-N
LogP0.89
CAS DataBase Reference75-18-3(CAS DataBase Reference)
NIST Chemistry ReferenceDimethyl sulfide(75-18-3)
EPA Substance Registry SystemDimethyl sulfide (75-18-3)
Safety Information
Hazard Codes F,Xn,Xi
Risk Statements 11-22-37/38-41-36
Safety Statements 7-9-16-29-33-36/39-26
RIDADR UN 1164 3/PG 2
WGK Germany 1
RTECS PV5075000
13
Autoignition Temperature402 °F
TSCA Yes
HS Code 2930 90 98
HazardClass 3
PackingGroup II
Hazardous Substances Data75-18-3(Hazardous Substances Data)
ToxicityLD50 orally in Rabbit: 535 mg/kg LD50 dermal Rabbit > 5000 mg/kg
MSDS Information
ProviderLanguage
ACROS English
SigmaAldrich English
ALFA English
Dimethyl sulfide Usage And Synthesis
DescriptionDimethyl sulfide, a sulfur ether compound, shares structural and property similarities with dimethyl ether. It is a colorless, volatile liquid that exhibits a distinct seafood-like odor. This compound is naturally generated through protein decomposition and serves as one of the culprits responsible for the fishy scent often associated with seafood.
Chemical PropertiesMethyl sulfide, also known as Dimethyl sulfide, is a clear colorless volatile liquid that has an intense, unpleasant odor, wild radish, cabbage-like. It can be tolerated as a green vegetable note only at very low levels (0.1 - 3.0 ppm). Dimethyl sulfide is soluble in ethanol and ether, but insoluble in water.
OccurrenceReported found in American peppermint oil, the oil of Algerian geranium, mint fractions, butter, orange, orange juice and grapefruit juice, black currant, berries, asparagus, kohlrabi, cabbage, carrot, celery, onion, garlic, peas, potato, rutabaga, sauerkraut, tomato, Scotch spearmint oil, parsley, wheat bread, many cheeses, yogurt, milk, cream, buttermilk, raw and cooked egg, fish, chicken, cooked beef, mutton, pork liver, hop oil, beer, cognac rum, grape wines, sherry, tea, roasted filberts and peanuts, oats, soybean, olive, beans, mushroom, starfruit, trassi, Bantu beer, macadamia nut, mango, cauliflower, Brussels sprouts, rice, sake, buckwheat, sweet corn, malt, wort, dried bonito, krill, shrimp, oysters, truffle, okra, crab, clam and scallop
UsesDimethyl sulfide undergoes thiolation reaction with hydrogen sulfide (H2S) in the presence of tungsten-zirconia (WO3/ZrO2) catalyst to form methanethiol.
UsesDimethyl sulfide is used as a displaceable ligand in chloro(dimethyl sulfide)gold(I) and other coordination compounds, as a reducing agent in ozonolysis reactions as well as a food flavoring component. Further, it is utilized for the preparation of dimethyl sulfoxide, which is a common and important industrial solvent. It finds application in the petroleum industry.
PreparationBy reaction of potassium sulfide with methyl chloride in methanol solution; from potassium methyl sulfate and potassium sulfide
DefinitionChEBI: Dimethyl sulfide is a methyl sulfide in which the sulfur atom is substituted by two methyl groups. It is produced naturally by some marine algae. It has a role as a bacterial xenobiotic metabolite, a marine metabolite, an EC 3.5.1.4 (amidase) inhibitor, an algal metabolite and an Escherichia coli metabolite.
Aroma threshold valuesDetection: 0.3 to 10 ppb. Aroma characteristics at 0.5%: sulfureous, dimethyl sulfide, creamy, tomato, fishy, scallop, berry fruity and vegetative nuances
Taste threshold valuesTaste characteristics at 1 to 5 ppm: sulfureous, vegetative tomato, sweet, creamed corn, corn and asparagus with a dairy creaminess and a slight minty afternote, alliaceous.
General DescriptionA clear colorless to straw colored liquid with a disagreeable odor. Flash point less than 0°F. Less dense than water and slightly soluble in water. Vapors are heavier than air.
Air & Water ReactionsHighly flammable. Slightly soluble in water.
Reactivity ProfileOrganosulfides, such as Dimethyl sulfide, are incompatible with acids, diazo and azo compounds, halocarbons, isocyanates, aldehydes, alkali metals, nitrides, hydrides, and other strong reducing agents. Reactions with these materials generate heat and in many cases hydrogen gas. Many of these compounds may liberate hydrogen sulfide upon decomposition or reaction with an acid. Dimethyl sulfide rapidly decomposes dibenzoyl peroxide explosively in the absence of solvent, [J. Org. Chem., 1972, 37, 2885]. The sulfide also decomposes xenon difluoride explosively at ambient temps, [J, Chem Soc., 1984, 2827]. Interaction of Dimethyl sulfide and oxygen is explosive at 210°C and above, [Atmos. Environ., 1967, 1, 491-497]. A delayed explosion occurred in a system containing nitric acid, Dimethyl sulfide, and 1, 4-dioxane, even with cooling with liquid nitrogen, [Chem. Abs., 1972, 76, 13515].
Health HazardInhalation causes moderate irritation of upper respiratory system. Contact of liquid with eyes causes moderate irritation. Repeated contact with skin may extract oils and result in irritation. Ingestion causes nausea and irritation of mouth and stomach.
Safety ProfilePoison by inhalation. Moderately toxic by ingestion. A skin and severe eye irritant. A very dangerous fire hazard when exposed to heat or flame. Explosive in the form of vapor when exposed to heat or flame. Can react vigorously with oxidizing materials. To fight fire, use CO2, dry chemical. When heated to decomposition it emits highly toxic fumes of SOx and may explode. See also SULFIDES.
Potential ExposureIt is used as a presulfiding agent forvariety of catalysts used by petroleum industry; a gas odorant; catalyst impregnator; as a solvent for anhydrous mineral salts; a chemical intermediate for solvents and dimethylsulfoxide; as a flavoring ingredient in foods and beve
First aidIf this chemical gets into the eyes, remove anycontact lenses at once and irrigate immediately for15 min, occasionally lifting upper and lower lids. Seek medical attention immediately. If this chemical contacts theskin, remove contaminated clothing and wash immediatelywith soap and water. Seek medical attention immediately. Ifthis chemical has been inhaled, remove from exposure,begin rescue breathing (using universal precautions, including resuscitation mask) if breathing has stopped and CPR ifheart action has stopped. Transfer promptly to a medicalfacility. When this chemical has been swallowed, get medical attention. Give large quantities of water and inducevomiting. Do not make an unconscious person vomit.
storageColor Code—Red: Flammability Hazard: Store ina flammable liquid storage area or approved cabinet awayfrom ignition sources and corrosive and reactive materials.Prior to working with dimethyl sulfide you should betrained on its proper handling and storage. Before enteringconfined space where this chemical may be present, checkto make sure that an explosive concentration does not exist.Store in tightly closed containers in a cool, well-ventilatedarea. Metal containers involving the transfer of this chemical should be grounded and bonded. Where possible, automatically pump liquid from drums or other storagecontainers to process containers. Drums must be equippedwith self-closing valves, pressure vacuum bungs, and flamearresters. Use only nonsparking tools and equipment, especially when opening and closing containers of this chemical. Sources of ignition, such as smoking and open flames,are prohibited where this chemical is used, handled, orstored in a manner that could create a potential fire orexplosion hazard. Wherever this chemical is used, handled,manufactured, or stored, use explosion-proof electricalequipment and fittings.
ShippingThis compound requires a shipping label of“FLAMMABLE LIQUID.” It falls in Hazard Class 3 andPacking Group II.
Purification MethodsPurify dimethyl sulfide via the Hg(II) chloride complex by dissolving 1 mole of Hg(II)Cl2 in 1250mL of EtOH and slowly adding the boiling alcoholic solution of Me2S to give the right ratio for 2(CH3)2S.3HgCl2. After recrystallisation of the complex to constant melting point, 500g of complex is heated with 250mL conc HCl in 750mL of water. The sulfide is separated, washed with water, and dried with CaCl2 and CaSO4. Finally, it is distilled under reduced pressure from sodium. Precautions should be taken (efficient fume hood) because of its very UNPLEASANT ODOUR.[Beilstein 1 IV 1275.]
IncompatibilitiesReacts violently with strong ox
Tag:Dimethyl sulfide(75-18-3) Related Product Information
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