ICSC 0179 - METHYL ETHYL KETONE

[List of Chemicals] [Risk Notes] [Risk Phrases] [Safety Phrases] [Danger Symbols]

METHYL ETHYL KETONE

ICSC: 0179
_{March 1998}

Ethyl methyl ketone
2-Butanone
MEK
Methyl acetone

CAS No: 78-93-3
RTECS No: EL6475000
UN No: 1193
EC No: 606-002-00-3

C₄H₈O / CH₃COCH₂CH₃
Molecular mass: 72.1

TYPES OF HAZARD / EXPOSURE	ACUTE HAZARDS / SYMPTOMS	PREVENTION	FIRST AID / FIRE FIGHTING
FIRE	Highly flammable.	NO open flames, NO sparks, and NO smoking.	Powder, AFFF, foam, carbon dioxide.
EXPLOSION	Vapour/air mixtures are explosive.	Closed system, ventilation, explosion-proof electrical equipment and lighting. Do NOT use compressed air for filling, discharging, or handling. Use non-sparking handtools.	In case of fire: keep drums, etc., cool by spraying with water.

EXPOSURE
Inhalation	Cough. Dizziness. Drowsiness. Headache. Nausea. Vomiting.	Ventilation, local exhaust, or breathing protection.	Fresh air, rest. Refer for medical attention.
Skin		Protective gloves.	Remove contaminated clothes. Rinse skin with plenty of water or shower.
Eyes	Redness. Pain.	Safety goggles.	First rinse with plenty of water for several minutes (remove contact lenses if easily possible), then take to a doctor.
Ingestion	Unconsciousness. (Furthersee Inhalation).	Do not eat, drink, or smoke during work.	Rinse mouth. Give plenty of water to drink. Refer for medical attention.

SPILLAGE DISPOSAL	PACKAGING & LABELLING
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. Personal protection: self-contained breathing apparatus.	F Symbol Xi Symbol R: 11-36-66-67 S: (2-)9-16 Note: 6 UN Hazard Class: 3 UN Pack Group: II

EMERGENCY RESPONSE	SAFE STORAGE
Transport Emergency Card: TEC (R)-30S1193 NFPA Code: H1; F3; R0.	Fireproof. Separated from strong oxidants, strong acids. Cool. Well closed.

IMPORTANT DATA

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
Reacts violently with strong oxidants and inorganic acids causing fire and explosion hazard. Attacks some plastic.

Occupational exposure limits
TLV: 200 ppm as TWA; 300 ppm as STEL; BEI issued; (ACGIH 2004).
MAK: 200 ppm, 600 mg/m³; H; Peak limitation category: I(1); Pregnancy risk group: C; (DFG 2004).

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

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 irritating to the eyes and the respiratory tract. The substance may cause effects on the central nervous system. Exposure far above the OEL may result in unconsciousness.

Effects of long-term or repeated exposure
The liquid defats the skin. Animal tests show that this substance possibly causes toxic effects upon human reproduction.

PHYSICAL PROPERTIES

ENVIRONMENTAL DATA

Boiling point: 80°C
Melting point: -86°C
Relative density (water = 1): 0.8
Solubility in water, g/100 ml at 20°C: 29
Vapour pressure, kPa at 20°C: 10.5
Relative vapour density (air = 1): 2.41
Relative density of the vapour/air-mixture at 20°C (air = 1): 1.1
Flash point: -9°C (c.c.)
Auto-ignition temperature: 505°C
Explosive limits, vol% in air: 1.8-11.5
Octanol/water partition coefficient as log Pow: 0.29

NOTES

The odour warning when the exposure limit value is exceeded is insufficient.
Card has been partly updated in October 2004. See sections Occupational Exposure Limits, EU classification, Emergency Response.

IPCS
International
Programme on
Chemical Safety

Prepared in the context of cooperation between the International Programme on Chemical Safety and the European Commission
© IPCS 2004

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