ICSC 0507 - METHYL ACETATE

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METHYL ACETATE	ICSC: 0507 (April 2014)
Ethyl ester of monoacetic acid Acetic acid methyl ester

CAS #: 79-20-9

UN #: 1231

EC Number: 201-185-2

	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. Heating will cause rise in pressure with risk of bursting.	NO open flames, NO sparks and NO smoking. Closed system, ventilation, explosion-proof electrical equipment and lighting. Use non-sparking handtools. Do NOT use compressed air for filling, discharging, or handling.	Use alcohol-resistant foam, foam, powder, carbon dioxide, fine water spray. In case of fire: keep drums, etc., cool by spraying with water.

PREVENT GENERATION OF MISTS!
	SYMPTOMS	PREVENTION	FIRST AID
Inhalation	Sore throat. Cough. Headache. Drowsiness.	Use ventilation, local exhaust or breathing protection.	Fresh air, rest. Refer for medical attention.
Skin	Redness. Dry skin.	Protective gloves.	Rinse contaminated clothes (fire hazard) with plenty of water. Remove contaminated clothes. Rinse skin with plenty of water or shower.
Eyes	Redness. Pain.	Wear 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 refer for medical attention.
Ingestion	Abdominal pain. Nausea. Vomiting. Weakness. Further see Inhalation.	Do not eat, drink, or smoke during work.	Rinse mouth. Give one or two glasses of water to drink. Refer for medical attention .

SPILLAGE DISPOSAL	CLASSIFICATION & LABELLING
Remove all ignition sources. Evacuate danger area! Consult an expert! Personal protection: filter respirator for organic gases and vapours of low boiling point adapted to the airborne concentration of the substance. Do NOT wash away into sewer. Collect leaking liquid in sealable containers. Absorb liquid in sand or inert absorbent. Then store and dispose of according to local regulations.	According to UN GHS Criteria Highly flammable liquid and vapour Causes eye irritation May cause drowsiness or dizziness Transportation UN Classification UN Hazard Class: 3; UN Pack Group: II
STORAGE
Fireproof. Separated from strong oxidants, strong acids and strong bases.
PACKAGING

METHYL ACETATE

ICSC: 0507

PHYSICAL & CHEMICAL INFORMATION
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 It reacts with strong oxidants. This generates fire or explosion hazard. It reacts violently with strong acids and strong bases. Attacks rubber and some forms of plastic.	Formula: C₃H₆O₂ / CH₃COOCH₃ Molecular mass: 74.1 Boiling point: 57°C Melting point: -98°C Relative density (water = 1): 0.93 Solubility in water, g/100ml at 20°C: 24.4 (poor) Vapour pressure, kPa at 20°C: 23.1 Relative vapour density (air = 1): 2.6 Relative density of the vapour/air-mixture at 20°C (air = 1): 1.3 Flash point: -13°C c.c. Auto-ignition temperature: 505°C Explosive limits, vol% in air: 3.1-16 Octanol/water partition coefficient as log Pow: 0.18

PHYSICAL & CHEMICAL INFORMATION

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
It reacts with strong oxidants. This generates fire or explosion hazard. It reacts violently with strong acids and strong bases. Attacks rubber and some forms of plastic.

Formula: C₃H₆O₂ / CH₃COOCH₃
Molecular mass: 74.1
Boiling point: 57°C
Melting point: -98°C
Relative density (water = 1): 0.93
Solubility in water, g/100ml at 20°C: 24.4 (poor)
Vapour pressure, kPa at 20°C: 23.1
Relative vapour density (air = 1): 2.6
Relative density of the vapour/air-mixture at 20°C (air = 1): 1.3
Flash point: -13°C c.c.
Auto-ignition temperature: 505°C
Explosive limits, vol% in air: 3.1-16
Octanol/water partition coefficient as log Pow: 0.18

EXPOSURE & HEALTH EFFECTS
Routes of exposure The substance can be absorbed into the body by inhalation of its vapour. Effects of short-term exposure The substance is irritating to the eyes and respiratory tract. The substance is mildly irritating to the skin. The substance may cause effects on nervous system. Exposure far above the OEL could cause lowering of consciousness.	Inhalation risk A harmful contamination of the air can be reached rather quickly on evaporation of this substance at 20°C. Effects of long-term or repeated exposure The substance defats the skin, which may cause dryness or cracking. The substance may have effects on the optic nerve. This may result in impaired vision.

EXPOSURE & HEALTH EFFECTS

Routes of exposure
The substance can be absorbed into the body by inhalation of its vapour.

Effects of short-term exposure
The substance is irritating to the eyes and respiratory tract. The substance is mildly irritating to the skin. The substance may cause effects on nervous system. Exposure far above the OEL could cause lowering of consciousness.

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

Effects of long-term or repeated exposure
The substance defats the skin, which may cause dryness or cracking. The substance may have effects on the optic nerve. This may result in impaired vision.

OCCUPATIONAL EXPOSURE LIMITS
TLV: 200 ppm as TWA; 250 ppm as STEL. MAK: 310 mg/m³, 100 ppm; peak limitation category: I(4); pregnancy risk group: C

ENVIRONMENT

NOTES
Do NOT take working clothes home. The odour warning when the exposure limit value is exceeded is insufficient.

ADDITIONAL INFORMATION

EC Classification
Symbol: F, Xi; R: 11-36-66-67; S: (2)-16-26-29-33

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