International Chemical Safety Cards

CHLOROMETHYL METHYL ETHER

ICSC: 0238

Dimethylchloroether
Chloromethoxymethane
CH₃OCH₂CI
Molecular mass: 80.5

ICSC #    0238
CAS #     107-30-2
RTECS # KN6650000
UN #        1239
EC #         603-075-00-3
September 20, 1993 Peer reviewed

TYPES OF HAZARD/ EXPOSURE	ACUTE HAZARDS/ SYMPTOMS	PREVENTION	FIRST AID/ FIRE FIGHTING
FIRE	Extremely flammable. Gives off irritating or toxic fumes (or gases) in a fire.	NO open flames, NO sparks, and NO smoking.	Powder, alcohol-resistant foam, water in large amounts, carbon dioxide. Water may be ineffective.
EXPLOSION	Vapour/air mixtures are explosive.	Closed system, ventilation, explosion-proof electrical equipment and lighting.	In case of fire: keep drums, etc., cool by spraying with water.

EXPOSURE		PREVENT GENERATION OF MISTS! AVOID ALL CONTACT!	IN ALL CASES CONSULT A DOCTOR!
•INHALATION	Burning sensation. Cough. Dizziness. Headache. Laboured breathing. Nausea. Sore throat.	Closed system and ventilation.	Fresh air, rest. Half-upright position. Artificial respiration if indicated. Refer for medical attention.
•SKIN	Redness. Skin burns. Pain. Blisters.	Protective gloves. Protective clothing.	Remove contaminated clothes. Rinse skin with plenty of water or shower. Refer for medical attention.
•EYES	Redness. Pain. Blurred vision. Loss of vision. Severe deep burns.	Face shield or eye protection in combination with breathing protection.	First rinse with plenty of water for several minutes (remove contact lenses if easily possible), then take to a doctor.
•INGESTION	Abdominal cramps. Vomiting. (Further see Inhalation).	Do not eat, drink, or smoke during work.	Rinse mouth. Do NOT induce vomiting. Refer for medical attention.

SPILLAGE DISPOSAL

STORAGE

PACKAGING & LABELLING

Evacuate danger area! Consult an expert! Ventilation. Collect leaking liquid in sealable containers. Absorb remaining liquid in sand or inert absorbent and remove to safe place. Do NOT wash away into sewer. (Extra personal protection: complete protective clothing including self-contained breathing apparatus).

Fireproof. Provision to contain effluent from fire extinguishing. Separated from food and feedstuffs .

Unbreakable packaging; put breakable packaging into closed unbreakable container. Do not transport with food and feedstuffs.
F symbol
T symbol
R: 45-11-20/21/22
S: 53-9-16-44
UN Hazard Class: 6.1
UN Subsidiary Risks: 3
UN Packing Group: I

SEE IMPORTANT INFORMATION ON BACK

ICSC: 0238

Prepared in the context of cooperation between the International Programme on Chemical Safety & the Commission of the European Communities (C) IPCS CEC 1994. No modifications to the International version have been made except to add the OSHA PELs, NIOSH RELs and NIOSH IDLH values.

International Chemical Safety Cards

CHLOROMETHYL METHYL ETHER

ICSC: 0238

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PHYSICAL STATE; APPEARANCE:
COLOURLESS LIQUID , WITH CHARACTERISTIC ODOUR.

PHYSICAL DANGERS:
The vapour is heavier than air and may travel along the ground; distant ignition possible.

CHEMICAL DANGERS:
On combustion, forms toxic gases and vapours (phosgene - see ICSC 0007 and hydrogen chloride - see ICSC 0163). The substance decomposes on contact with water producing hydrogen chloride and formaldehyde (see ICSC 0275). Attacks many metals in presence of water.

OCCUPATIONAL EXPOSURE LIMITS:
TLV not established.
OSHA PEL: 1910.1006 See Appendix B
NIOSH REL: Ca See Appendix A
NIOSH IDLH: Potential occupational carcinogen No data

ROUTES OF EXPOSURE:
The substance can be absorbed into the body by inhalation of its vapour.

INHALATION RISK:
A harmful contamination of the air can be reached rather quickly on evaporation of this substance at 20°C.

EFFECTS OF SHORT-TERM EXPOSURE:
The substance is corrosive to the eyes, the skin and the respiratory tract. Inhalation of the substance may cause lung oedema (see Notes).

EFFECTS OF LONG-TERM OR REPEATED EXPOSURE:
Lungs may be affected by repeated or prolonged exposure. This substance is carcinogenic to humans.

PHYSICAL
PROPERTIES

Boiling point: 59°C
Melting point: -104°C
Relative density (water = 1): 1.06
Solubility in water: decomposes
Vapour pressure, kPa at 20°C: about 25.3

Relative vapour density (air = 1): 2.8
Relative density of the vapour/air-mixture at 20°C (air = 1): about 1.4
Flash point: -17.8°C
Auto-ignition temperature: see Notes
Explosive limits, vol% in air: see Notes

ENVIRONMENTAL
DATA

N O T E S

ACGIH classified this substance as A2 (suspected human carcinogen). The auto-ignition temperature is unknown in literature. Explosive limits are unknown in literature. The symptoms of lung oedema often do not become manifest until a few hours have passed and they are aggravated by physical effort. Rest and medical observation are therefore essential. Do NOT use in the vicinity of a fire or a hot surface, or during welding. Check for peroxides prior to distillation; render harmless if positive.

Transport Emergency Card: TEC (R)-30G32

ADDITIONAL INFORMATION

ICSC: 0238	CHLOROMETHYL METHYL ETHER
(C) IPCS, CEC, 1994

IMPORTANT LEGAL NOTICE:

Neither NIOSH, the CEC or the IPCS nor any person acting on behalf of NIOSH, the CEC or the IPCS is responsible for the use which might be made of this information. This card contains the collective views of the IPCS Peer Review Committee and may not reflect in all cases all the detailed requirements included in national legislation on the subject. The user should verify compliance of the cards with the relevant legislation in the country of use. The only modifications made to produce the U.S. version is inclusion of the OSHA PELs, NIOSH RELs and NIOSH IDLH values.