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Chloromethyl methyl ether

Chloromethyl methyl ether
Chloromethyl methyl ether structure
Chemical Name:
Chloromethyl methyl ether
CMME;CH3OCH2Cl;A chlorine;MOM chloride;chloromethyl;CHLOROMETHYIMETHYI;Chlordimethylether;methylchloromethyl;Chloromethyl methyl;Chloromethylradical
Molecular Formula:
Formula Weight:
MOL File:

Chloromethyl methyl ether Properties

Melting point:
Boiling point:
55-57 °C(lit.)
1.06 g/mL at 25 °C(lit.)
vapor pressure 
3.55 psi ( 20 °C)
refractive index 
n20/D 1.396(lit.)
Flash point:
60 °F
storage temp. 
Water Solubility 
CAS DataBase Reference
107-30-2(CAS DataBase Reference)
NIST Chemistry Reference
Methane, chloromethoxy-(107-30-2)
  • Risk and Safety Statements
  • NFPA
Hazard Codes  F,T
Risk Statements  45-11-20/21/22
Safety Statements  53-45
RIDADR  UN 1239 6.1/PG 1
WGK Germany  3
RTECS  KN6650000
HazardClass  6.1
PackingGroup  I
Hazardous Substances Data 107-30-2(Hazardous Substances Data)

NFPA 704

Diamond Hazard Value Description
3 2
Health   3 Short exposure could cause serious temporary or moderate residual injury (e.g. liquid hydrogen, sulfuric acid, calcium hypochlorite, hexafluorosilicic acid)
Flammability   3 Liquids and solids (including finely divided suspended solids) that can be ignited under almost all ambient temperature conditions . Liquids having a flash point below 22.8 °C (73 °F) and having a boiling point at or above 37.8 °C (100 °F) or having a flash point between 22.8 and 37.8 °C (73 and 100 °F). (e.g. gasoline, acetone)
Instability   2 Undergoes violent chemical change at elevated temperatures and pressures, reacts violently with water, or may form explosive mixtures with water (e.g. white phosphorus, potassium, sodium)

(NFPA, 2010)

Chloromethyl methyl ether price

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Chloromethyl methyl ether Chemical Properties,Uses,Production

Chemical Properties

Clear Colourless Oil


A chloroalkyl ether that is an efficient alkylating agent. Used as an alcohol protecting group in the preparation of various organic compounds. A known human carcinogen.

General Description

A clear colorless liquid. Flash point -4°F. Irritates the eyes and respiratory system. Very toxic by inhalation and may be toxic by ingestion or skin absorption. Vapors are heavier than air.

Air & Water Reactions

Highly flammable. Denser than water and is decomposed by water to yield hydrochloric acid, a corrosive material. With water the ether reacts to evolve formaldehyde and hydrogen chloride. The reaction is slow at ambient conditions.

Reactivity Profile

Chloromethyl methyl ether Is a halogenated ether. Ethers tend to form unstable peroxides when exposed to oxygen. Ethyl, isobutyl, ethyl tert-butyl, and ethyl tert-pentyl ether are particularly hazardous in this respect. Ether peroxides can sometimes be observed as clear crystals deposited on containers or along the surface of the liquid. Ethers can act as bases. They form salts with strong acids and addition complexes with Lewis acids. The complex between diethyl ether and boron trifluoride is an example. Ethers may react violently with strong oxidizing agents. In other reactions, which typically involve the breaking of the carbon-oxygen bond, ethers are relatively inert.

Health Hazard

The principal effect is irritation. The liquid causes severe irritation of eyes and skin; and vapor exposure of 100 ppm is severely irritating to eyes and nose. This level is dangerous to life in 4 hours. Pulmonary edema or pneumonia may cause death. There was increased death rate from respiratory cancer among exposed victims and it is a regulated carcinogen.

Fire Hazard

Flammable/combustible material; may be ignited by heat, sparks, or flames. Vapors may travel to a source of ignition and flash back. Container may explode in heat of fire. In addition to the risk of explosion, when air mixtures of ether vapors are heated or exposed to flame or sparks, they tend to form peroxides. Ethers containing peroxides can detonate when heated. Unburned material may form powerful tear gas. When wet, also forms irritating formaldehyde gas. Evolves formaldehyde and hydrogen chloride. When heated to decomposition, Chloromethyl methyl ether emits toxic fumes of chlorides. Avoid decomposing heat Hazardous polymerization may not occur.

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