ICSC 1163 - METHANESULFONYL CHLORIDE

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METHANESULFONYL CHLORIDE	ICSC: 1163 (May 2018)
Mesyl chloride Methylsulfonyl chloride Methanesulfonic acid chloride Chloromethyl sulfone Methyl sulfochloride

CAS #: 124-63-0

UN #: 3246

EC Number: 204-706-1

	ACUTE HAZARDS	PREVENTION	FIRE FIGHTING
FIRE & EXPLOSION	Combustible. Gives off irritating or toxic fumes (or gases) in a fire.	NO open flames.	Use water spray, powder, foam, carbon dioxide.

AVOID ALL CONTACT! IN ALL CASES CONSULT A DOCTOR!
	SYMPTOMS	PREVENTION	FIRST AID
Inhalation	Cough. Sore throat. Burning sensation. Laboured breathing. Shortness of breath.	Use ventilation, local exhaust or breathing protection.	Fresh air, rest. Refer immediately for medical attention.
Skin	Redness. Pain. Blisters.	Protective gloves. Protective clothing.	Wear protective gloves when administering first aid. Remove contaminated clothes. Rinse skin with plenty of water or shower. Refer immediately for medical attention.
Eyes	Redness. Pain. Severe burns.	Wear safety goggles, face shield or eye protection in combination with breathing protection.	Rinse with plenty of water for several minutes (remove contact lenses if easily possible). Refer immediately for medical attention.
Ingestion	See Inhalation.	Do not eat, drink, or smoke during work.	Rinse mouth. Do NOT induce vomiting. Refer immediately for medical attention.

SPILLAGE DISPOSAL	CLASSIFICATION & LABELLING
Evacuate danger area! Consult an expert! Personal protection: complete protective clothing including self-contained breathing apparatus. Collect leaking and spilled liquid in sealable dry containers as far as possible. Absorb remaining liquid in sand or inert absorbent. Then store and dispose of according to local regulations. Do NOT wash away into sewer.	According to UN GHS Criteria May be corrosive to metals Toxic if swallowed or in contact with skin Fatal if inhaled Causes severe skin burns and eye damage May cause an allergic skin reaction May cause respiratory irritation Harmful to aquatic life Transportation UN Classification UN Hazard Class: 6.1; UN Subsidiary Risks: 8; UN Pack Group: I
STORAGE
Separated from food and feedstuffs and incompatible materials. Dry. Well closed. Keep in a well-ventilated room. Store in an area without drain or sewer access.
PACKAGING
Airtight. Unbreakable packaging. Put breakable packaging into closed unbreakable container. Do not transport with food and feedstuffs.

METHANESULFONYL CHLORIDE

ICSC: 1163

PHYSICAL & CHEMICAL INFORMATION
Physical State; Appearance COLOURLESS-TO-PALE-YELLOW LIQUID WITH PUNGENT ODOUR. Physical dangers Chemical dangers Decomposes on heating and on burning. This produces toxic and corrosive fumes including hydrogen chloride (see ICSC 0163) and sulfur oxides. Reacts with water and steam. This produces toxic and corrosive fumes including hydrogen chloride. This generates toxic hazard. Reacts violently with bases including ammonia and many other substances. This generates fire and explosion hazard.	Formula: CH₃ClO₂S Molecular mass: 114.6 Boiling point at 97.3kPa: 161°C Melting point: -32°C Relative density (water = 1): 1.5 Solubility in water: reaction Vapour pressure, kPa at 20°C: 0.27 Relative vapour density (air = 1): 4.0 Relative density of the vapour/air-mixture at 20°C (air = 1): 1.01 Flash point: >110°C

PHYSICAL & CHEMICAL INFORMATION

Physical State; Appearance
COLOURLESS-TO-PALE-YELLOW LIQUID WITH PUNGENT ODOUR.

Physical dangers

Chemical dangers
Decomposes on heating and on burning. This produces toxic and corrosive fumes including hydrogen chloride (see ICSC 0163) and sulfur oxides. Reacts with water and steam. This produces toxic and corrosive fumes including hydrogen chloride. This generates toxic hazard. Reacts violently with bases including ammonia and many other substances. This generates fire and explosion hazard.

Formula: CH₃ClO₂S
Molecular mass: 114.6
Boiling point at 97.3kPa: 161°C
Melting point: -32°C
Relative density (water = 1): 1.5
Solubility in water: reaction
Vapour pressure, kPa at 20°C: 0.27
Relative vapour density (air = 1): 4.0
Relative density of the vapour/air-mixture at 20°C (air = 1): 1.01
Flash point: >110°C

EXPOSURE & HEALTH EFFECTS
Routes of exposure The substance can be absorbed into the body by inhalation, by ingestion and through the skin. Effects of short-term exposure The substance is corrosive to the eyes, skin and respiratory tract. Corrosive on ingestion.	Inhalation risk No indication can be given about the rate at which a harmful concentration of this substance in the air is reached on evaporation at 20°C. Effects of long-term or repeated exposure Repeated or prolonged contact may cause skin sensitization.

EXPOSURE & HEALTH EFFECTS

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

Effects of short-term exposure
The substance is corrosive to the eyes, skin and respiratory tract. Corrosive on ingestion.

Inhalation risk
No indication can be given about the rate at which a harmful concentration of this substance in the air is reached on evaporation at 20°C.

Effects of long-term or repeated exposure
Repeated or prolonged contact may cause skin sensitization.

OCCUPATIONAL EXPOSURE LIMITS

ENVIRONMENT
The substance is harmful to aquatic organisms.

NOTES

ADDITIONAL INFORMATION

EC Classification

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