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Dimethyl ether

Dimethyl ether
Dimethyl ether
CAS No.
115-10-6
Chemical Name:
Dimethyl ether
Synonyms
RE170;dymela;RE-170;Dymel A;demeond;(CH3)2O;woodether;Wood ether;ether,methyl;METHYL OXIDE
CBNumber:
CB8765901
Molecular Formula:
C2H6O
Formula Weight:
46.07
MOL File:
115-10-6.mol

Dimethyl ether Properties

Melting point:
−141 °C(lit.)
Boiling point:
−24.8 °C(lit.)
Density 
1.617
vapor density 
1.62 (vs air)
vapor pressure 
>760 mm Hg ( 25 °C)
refractive index 
1.2984
Flash point:
-41°C
explosive limit
27%
Water Solubility 
soluble
Merck 
6071
Stability:
Stable. Extremely flammable. Note low flash point. May form explosive mixtures with air. May form peroxides during prolonged storage.
CAS DataBase Reference
115-10-6(CAS DataBase Reference)
NIST Chemistry Reference
Dimethyl ether(115-10-6)
EPA Substance Registry System
Methane, oxybis-(115-10-6)
SAFETY
  • Risk and Safety Statements
  • Hazard and Precautionary Statements (GHS)
Hazard Codes  F+
Risk Statements  12
Safety Statements  9-16-33
RIDADR  UN 1033 2.1
WGK Germany  1
RTECS  PM4780000
4.5-31
HazardClass  2.1
Hazardous Substances Data 115-10-6(Hazardous Substances Data)
Symbol(GHS):
Signal word: Danger
Hazard statements:
Code Hazard statements Hazard class Category Signal word Pictogram P-Codes
H220 Extremely flammable gas Flammable gases Category 1 Danger P210, P377, P381, P403
H280 Contains gas under pressure; may explode if heated Gases under pressure Compressed gas
Liquefied gas
Dissolved gas
Warning P410+P403
Precautionary statements:
P210 Keep away from heat/sparks/open flames/hot surfaces. — No smoking.
P377 Leaking gas fire: Do not extinguish, unless leak can be stopped safely.
P381 Eliminate all ignition sources if safe to do so.
P410+P403 Protect from sunlight. Store in a well-ventilated place.

Dimethyl ether price More Price(3)

Manufacturer Product number Product description CAS number Packaging Price Updated Buy
Sigma-Aldrich 295299 Dimethyl ether ≥99% 115-10-6 100g $170 2018-11-20 Buy
Sigma-Aldrich 295299 Dimethyl ether ≥99% 115-10-6 1kg $403 2018-11-20 Buy
Sigma-Aldrich 295299 Dimethyl ether ≥99% 115-10-6 400g $231 2018-11-20 Buy

Dimethyl ether Chemical Properties,Uses,Production

Chemical Properties

colourless gas

Definition

ChEBI: An ether in which the oxygen atom is connected to two methyl groups.

Uses

Aerosol propellant; alternative diesel fuel; chemical intermediate.

General Description

Dimethyl ether is a colorless gas with a faint ethereal odor. Dimethyl ether is shipped as a liquefied gas under its vapor pressure. Contact with the liquid can cause frostbite. Dimethyl ether is easily ignited. Its vapors are heavier than air. Any leak can be either liquid or vapor. Dimethyl ether can asphyxiate by the displacement of air. Under prolonged exposure to fire or intense heat the containers may rupture violently and rocket.

Air & Water Reactions

Highly flammable. Upon standing and exposure to air (oxygen) tendency to form explosive peroxides. When ethers containing peroxides are heated (distilled) they can detonate [Lewis, 3rd ed., 1993, p. 854].

Reactivity Profile

Dimethyl ether is a colorless, highly flammable gas (b. p. -24° C), slightly toxic. Very dangerous fire and explosion hazard when exposed to flame, sparks, heat or strong oxidizers. Violent reaction with aluminum hydride, lithium aluminum hydride. Upon standing and exposure to air (oxygen) tendency to form explosive peroxides. When ethers containing peroxides are heated (distilled) they can detonate [Lewis, 3rd ed., 1993, p. 854].

Health Hazard

Inhalation produces some anesthesia (but less than that of ethyl ether), blurring of vision, headache, intoxication, loss of consciousness. Liquid or concentrated vapor irritates eyes. Contact of liquid with skin may cause frostbite.

Fire Hazard

Behavior in Fire: Containers may explode. Vapors are heavier than air and may travel long distance to a source of ignition and flash back.

Safety Profile

Slightly toxic by inhalation. Very dangerous fire hazard when exposed to heat, flame, or oxidzers. Dangerous explosion hazard when exposed to flame, sparks, etc. Violent reaction with AH3 and LiAlH2. Keep in closed container away from heat and open flame. To fight fire, stop flow of gas. When heated to decomposition it emits acrid smoke and irritating fumes.

Purification Methods

Dry methyl ether by passing over alumina and then BaO, or over CaH2, followed by fractional distillation at low temperatures. Its solubility is 37mL per mL of H2O at 18o, and it is very soluble

Dimethyl ether Preparation Products And Raw materials

Raw materials

Preparation Products


Dimethyl ether Suppliers

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Dimethyl ether Spectrum


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