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Dimethyl sulfide

Dimethyl sulfide
Dimethyl sulfide structure
CAS No.
75-18-3
Chemical Name:
Dimethyl sulfide
Synonyms
DMS;ME2S;(CH3)2S;Exact-S;FEMA 2746;Thiopropane;2-Thiopropane;2-THIAPROPANE;thiobis-methan;Dimethylsulfid
CBNumber:
CB6478393
Molecular Formula:
C2H6S
Formula Weight:
62.13
MOL File:
75-18-3.mol

Dimethyl sulfide 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
Flash point:
−34 °F
storage temp. 
2-8°C
solubility 
Miscible with alcohols, ethers, esters, ketones, aliphatic and aromatic hydrocarbons. Slightly miscible with
form 
Liquid
color 
Clear colorless
Specific Gravity
0.849 (20/4℃)
Odor
Ethereal, permeating; disagreeable; offensive.
explosive limit
2.2-19.7%(V)
Merck 
14,6123
JECFA Number
452
BRN 
1696847
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.
CAS DataBase Reference
75-18-3(CAS DataBase Reference)
NIST Chemistry Reference
Dimethyl sulfide(75-18-3)
EPA Substance Registry System
Methane, thiobis-(75-18-3)
SAFETY
  • Risk and Safety Statements
  • Hazard and Precautionary Statements (GHS)
  • NFPA
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 Temperature 402 °F
TSCA  Yes
HS Code  2930 90 98
HazardClass  3
PackingGroup  II
Hazardous Substances Data 75-18-3(Hazardous Substances Data)
Toxicity LD50 orally in Rabbit: 535 mg/kg LD50 dermal Rabbit > 5000 mg/kg
Symbol(GHS):
Signal word: Danger
Hazard statements:
Code Hazard statements Hazard class Category Signal word Pictogram P-Codes
H225 Highly Flammable liquid and vapour Flammable liquids Category 2 Danger P210,P233, P240, P241, P242, P243,P280, P303+ P361+P353, P370+P378,P403+P235, P501
H303 May be harmfulif swallowed Acute toxicity,oral Category 5 P312
H315 Causes skin irritation Skin corrosion/irritation Category 2 Warning P264, P280, P302+P352, P321,P332+P313, P362
H318 Causes serious eye damage Serious eye damage/eye irritation Category 1 Danger P280, P305+P351+P338, P310
H319 Causes serious eye irritation Serious eye damage/eye irritation Category 2A Warning P264, P280, P305+P351+P338,P337+P313P
H335 May cause respiratory irritation Specific target organ toxicity, single exposure;Respiratory tract irritation Category 3 Warning
Precautionary statements:
P210 Keep away from heat/sparks/open flames/hot surfaces. — No smoking.
P233 Keep container tightly closed.
P240 Ground/bond container and receiving equipment.
P261 Avoid breathing dust/fume/gas/mist/vapours/spray.
P280 Wear protective gloves/protective clothing/eye protection/face protection.
P303+P361+P353 IF ON SKIN (or hair): Remove/Take off Immediately all contaminated clothing. Rinse SKIN with water/shower.
P305+P351+P338 IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing.
P370+P378 In case of fire: Use … for extinction.
P405 Store locked up.
P403+P235 Store in a well-ventilated place. Keep cool.
P501 Dispose of contents/container to..…

NFPA 704

Diamond Hazard Value Description
4
2 0
Health   2 Intense or continued but not chronic exposure could cause temporary incapacitation or possible residual injury (e.g. diethyl ether, ammonium phosphate, iodine)
Flammability   4 Will rapidly or completely vaporize at normal atmospheric pressure and temperature, or is readily dispersed in air and will burn readily. Includes pyrophoric substances. Flash point below room temperature at 22.8 °C (73 °F). (e.g. acetylene, propane, hydrogen gas)
Instability   0 Normally stable, even under fire exposure conditions, and is not reactive with water (e.g. helium,N2)
Special  

(NFPA, 2010)

Dimethyl sulfide price More Price(24)

Manufacturer Product number Product description CAS number Packaging Price Updated Buy
Sigma-Aldrich 274380 Dimethyl sulfide anhydrous, ≥99.0% 75-18-3 100ml $53.6 2018-11-13 Buy
Sigma-Aldrich 274380 Dimethyl sulfide anhydrous, ≥99.0% 75-18-3 1l $151 2018-11-13 Buy
TCI Chemical M0431 Methyl Sulfide >99.0%(GC) 75-18-3 25mL $18 2018-11-22 Buy
TCI Chemical M0431 Methyl Sulfide >99.0%(GC) 75-18-3 100mL $30 2018-11-22 Buy
Alfa Aesar 022949 Dimethyl sulfide, 99+% 75-18-3 250ml $19.5 2018-11-16 Buy

Dimethyl sulfide Chemical Properties,Uses,Production

Chemical Properties

Clear colorless liquid

Uses

Sulfiding agent.

Definition

ChEBI: A methyl sulfide in which the sulfur atom is substituted by two methyl groups. It is produced naturally by some marine algae.

General Description

A 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 Reactions

Highly flammable. Slightly soluble in water.

Reactivity Profile

Organosulfides, 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 Hazard

Inhalation 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.

Fire Hazard

ond-degree burns on long exposure; Odor Threshold: 0.001 ppm. Fire Hazards — Flash Point (°F): -36 ℃; Flammable Limits in Air (%): 2.2-19.7; Fire Extinguishing Agents: dry chemical, foam, carbon dioxide, or alcohol foam; Fire Extinguishing Agents Not To Be Used: Water may be ineffective; Special Hazards of Combustion Products: Toxic and irritating sulfur dioxide is formed; Behavior in Fire: Vapor is heavier than air and may travel considerable distance to source of ignition and flash back; Ignition Temperature (°F): 403; Electrical Hazard: Data not available; Burning Rate: 4.8 mm/min.

Chemical Reactivity

Reactivity with Water : No reaction; Reactivity with Common Materials: No reaction; Stability During Transport: Stable; Neutralizing Agents for Acids and Caustics: Not pertinent; Polymerization: Not pertinent; Inhibitor of Polymerization: Not pertinent.

Safety Profile

Poison 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.

Purification Methods

Purify 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.]

Dimethyl sulfide Preparation Products And Raw materials

Raw materials

Preparation Products


Dimethyl sulfide Suppliers

Global( 218)Suppliers
Supplier Tel Fax Email Country ProdList Advantage
Mainchem Co., Ltd.
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career henan chemical co
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021-51821727 shenlinxing@macklin.cn China 15724 55
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0539-6362799(To 20) 861669111@qq.com China 10006 58
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View Lastest Price from Dimethyl sulfide manufacturers

Image Release date Product Price Min. Order Purity Supply Ability Manufacturer
2018-07-28 Dimethyl sulfide
75-18-3
US $100.00 / KG 25KG 98% 1000KG career henan chemical co

Dimethyl sulfide Spectrum


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