International Chemical Safety Cards

3-CHLORO-2-METHYL-1-PROPENE

ICSC: 1341

Methallyl chloride
Methyl allyl chloride
gamma-Chloroisobutylene
C₄H₇Cl / ClCH₂(CH₃)C=CH₂
Molecular mass: 90.55

ICSC #    1341
CAS #     563-47-3
RTECS # UC8050000
UN #        2554
EC #         602-032-00-6
November 23, 1998 Peer reviewed

TYPES OF HAZARD/ EXPOSURE	ACUTE HAZARDS/ SYMPTOMS	PREVENTION	FIRST AID/ FIRE FIGHTING
FIRE	Highly flammable. Heating will cause rise in pressure with risk of bursting. Gives off irritating or toxic fumes (or gases) in a fire.	NO open flames, NO sparks, and NO smoking. NO contact with hot surfaces.	Powder, AFFF, foam, carbon dioxide.
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		STRICT HYGIENE!
•INHALATION	Cough. Headache. Shortness of breath. Sore throat.	Ventilation, local exhaust, or breathing protection.	Fresh air, rest. Half-upright position. Artificial respiration if indicated. Refer for medical attention.
•SKIN	Redness. Pain.	Protective gloves.	Remove contaminated clothes. Rinse and then wash skin with water and soap.
•EYES	Redness. Pain.	Safety goggles, 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		Do not eat, drink, or smoke during work.	Rinse mouth. Do NOT induce vomiting. Rest. Refer for medical attention.

SPILLAGE DISPOSAL

STORAGE

PACKAGING & LABELLING

Evacuate danger area! Consult an expert! Remove all ignition sources. Collect leaking and spilled liquid in sealable containers as far as possible. Absorb remaining liquid in sand or inert absorbent and remove to safe place. Do NOT wash away into sewer. Do NOT let this chemical enter the environment. (Extra personal protection: complete protective clothing including self-contained breathing apparatus).

Fireproof. Provision to contain effluent from fire extinguishing. Separated from strong oxidants, strong bases. Cooled. Well closed.

F symbol
C symbol
N symbol
R: 11-20/22-34-43-51/53
S: 2-9-16-26-29-36/37/39-45-61
UN Hazard Class: 3
UN Packing Group: II

SEE IMPORTANT INFORMATION ON BACK

ICSC: 1341

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

3-CHLORO-2-METHYL-1-PROPENE

ICSC: 1341

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PHYSICAL STATE; APPEARANCE:
COLOURLESS TO YELLOW LIQUID , WITH PUNGENT ODOUR.

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

CHEMICAL DANGERS:
The substance decomposes on burning producing toxic fumes, including phosgene, hydrogen chloride. Reacts with strong oxidants, strong bases causing fire hazard.

OCCUPATIONAL EXPOSURE LIMITS:
TLV not established.

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 very quickly on evaporation of this substance at 20°C.

EFFECTS OF SHORT-TERM EXPOSURE:
Tear drawing. The substance irritates the eyes, the skin, the respiratory tract. Swallowing the liquid may cause aspiration into the lungs with the risk of chemical pneumonitis. The substance may cause effects on the central nervous system. Exposure at high level could cause lowering of consciousness.

EFFECTS OF LONG-TERM OR REPEATED EXPOSURE:
Repeated or prolonged contact may cause skin sensitization.

PHYSICAL
PROPERTIES

Boiling point: 72°C
Melting point: -80°C
Relative density (water = 1): 0.92
Solubility in water, g/100 ml at 20°C: none
Vapour pressure, kPa at 20°C: 14
Relative vapour density (air = 1): 3.12

Relative density of the vapour/air-mixture at 20°C (air = 1): 1.3
Flash point: -12°C c.c.
Auto-ignition temperature: 540°C
Explosive limits, vol% in air: 2.2-10.4
Octanol/water partition coefficient as log Pow: 1.98

ENVIRONMENTAL
DATA

The substance is toxic to aquatic organisms.

N O T E S

Check oxygen content before entering area.

Transport Emergency Card: TEC (R)-30G30

NFPA Code: H2; F3; R1;

ADDITIONAL INFORMATION

ICSC: 1341	3-CHLORO-2-METHYL-1-PROPENE
(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.