ICSC 1110 - METHYL CHLOROFORMATE

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METHYL CHLOROFORMATE	ICSC: 1110 (March 1999)
Methyl chlorocarbonate Carbonochloridic acid, methyl ester Chloroformic acid methyl ester Methoxycarbonyl chloride

CAS #: 79-22-1

UN #: 1238

EC Number: 201-187-3

	ACUTE HAZARDS	PREVENTION	FIRE FIGHTING
FIRE & EXPLOSION	Highly flammable. Gives off irritating or toxic fumes (or gases) in a fire. Vapour/air mixtures are explosive.	NO open flames, NO sparks and NO smoking. Closed system, ventilation, explosion-proof electrical equipment and lighting. Do NOT use compressed air for filling, discharging, or handling.	Shut off supply; if not possible and no risk to surroundings, let the fire burn itself out. In other cases extinguish with foam, powder, carbon dioxide, dry sand. In case of fire: keep drums, etc., cool by spraying with water. NO direct contact with water.

STRICT HYGIENE! IN ALL CASES CONSULT A DOCTOR!
	SYMPTOMS	PREVENTION	FIRST AID
Inhalation	Burning sensation. Cough. Laboured breathing. Shortness of breath. Sore throat. Symptoms may be delayed. See Notes.	Use ventilation, local exhaust or breathing protection.	Fresh air, rest. Half-upright position. Artificial respiration may be needed. Refer for medical attention.
Skin	Redness. Skin burns. Pain. Blisters.	Protective gloves. Protective clothing.	Remove contaminated clothes. Rinse and then wash skin with water and soap. Refer for medical attention .
Eyes	Redness. Pain. Loss of vision. Severe deep burns.	Wear safety goggles, 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 refer for medical attention.
Ingestion	Abdominal pain. Burning sensation. Shock or collapse.	Do not eat, drink, or smoke during work. Wash hands before eating.	Rinse mouth. Do NOT induce vomiting. Refer for medical attention .

SPILLAGE DISPOSAL	CLASSIFICATION & LABELLING
Evacuate danger area! Consult an expert! Personal protection: chemical protection suit including self-contained breathing apparatus. Do NOT let this chemical enter the environment. Collect leaking and spilled liquid in sealable containers as far as possible. Absorb remaining liquid in dry sand or inert absorbent. Then store and dispose of according to local regulations. Do NOT wash away into sewer.	According to UN GHS Criteria Transportation UN Classification UN Hazard Class: 6.1; UN Subsidiary Risks: 3 and 8; UN Pack Group: I
STORAGE
Fireproof. Provision to contain effluent from fire extinguishing. Separated from strong oxidants and food and feedstuffs. Dry. Well closed. Keep in a well-ventilated room.
PACKAGING
Do not transport with food and feedstuffs.

METHYL CHLOROFORMATE

ICSC: 1110

PHYSICAL & CHEMICAL INFORMATION
Physical State; Appearance COLOURLESS LIQUID WITH PUNGENT ODOUR. Physical dangers The vapour is heavier than air and may travel along the ground; distant ignition possible. Chemical dangers Decomposes on heating and on burning. This produces toxic and corrosive fumes including hydrogen chloride and phosgene. Reacts violently with strong oxidants. Reacts gradually with water. This produces hydrogen chloride. Attacks many metals in the presence of water.	Formula: C₂H₃ClO₂ / CH₃OCOCl Molecular mass: 94.50 Boiling point: 71°C Melting point: -61°C Relative density (water = 1): 1.22 Solubility in water: poor Vapour pressure, kPa at 20°C: 14 Relative vapour density (air = 1): 3.3 Relative density of the vapour/air-mixture at 20°C (air = 1): 1.3 Flash point: 12°C Auto-ignition temperature: 504°C Explosive limits, vol% in air: 6.7-?

PHYSICAL & CHEMICAL INFORMATION

Physical State; Appearance
COLOURLESS LIQUID WITH PUNGENT ODOUR.

Physical dangers
The vapour is heavier than air and may travel along the ground; distant ignition possible.

Chemical dangers
Decomposes on heating and on burning. This produces toxic and corrosive fumes including hydrogen chloride and phosgene. Reacts violently with strong oxidants. Reacts gradually with water. This produces hydrogen chloride. Attacks many metals in the presence of water.

Formula: C₂H₃ClO₂ / CH₃OCOCl
Molecular mass: 94.50
Boiling point: 71°C
Melting point: -61°C
Relative density (water = 1): 1.22
Solubility in water: poor
Vapour pressure, kPa at 20°C: 14
Relative vapour density (air = 1): 3.3
Relative density of the vapour/air-mixture at 20°C (air = 1): 1.3
Flash point: 12°C
Auto-ignition temperature: 504°C
Explosive limits, vol% in air: 6.7-?

EXPOSURE & HEALTH EFFECTS
Routes of exposure The substance can be absorbed into the body by inhalation of its vapour, through the skin and by ingestion. Effects of short-term exposure Lachrymation. The substance is corrosive to the eyes, skin and respiratory tract. Corrosive on ingestion. Inhalation of the vapour may cause lung oedema. See Notes.	Inhalation risk A harmful contamination of the air can be reached very quickly on evaporation of this substance at 20°C. Effects of long-term or repeated exposure

EXPOSURE & HEALTH EFFECTS

Routes of exposure
The substance can be absorbed into the body by inhalation of its vapour, through the skin and by ingestion.

Effects of short-term exposure
Lachrymation. The substance is corrosive to the eyes, skin and respiratory tract. Corrosive on ingestion. Inhalation of the vapour may cause lung oedema. See Notes.

Inhalation risk
A harmful contamination of the air can be reached very quickly on evaporation of this substance at 20°C.

Effects of long-term or repeated exposure

OCCUPATIONAL EXPOSURE LIMITS
MAK: 0.78 mg/m³, 0.2 ppm; peak limitation category: I(2); pregnancy risk group: C

ENVIRONMENT
The substance is toxic to aquatic organisms.

NOTES
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. Immediate administration of an appropriate inhalation therapy by a doctor, or by an authorized person, should be considered.

ADDITIONAL INFORMATION

EC Classification
Symbol: F, T+; R: 11-21/22-26-34; S: (1/2)-14-26-28-36/37-39-45-46-63

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