ICSC 0489 - 2-HEXANONE

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

2-HEXANONE

ICSC: 0489
_{November 1998}

Methyl n-butyl ketone
n-Butyl methyl ketone
MBK

CAS No: 591-78-6
RTECS No: MP1400000
UN No: 1224
EC No: 606-030-00-6

C₆H₁₂O / C₄H₉COCH₃
Molecular mass: 100.2

TYPES OF HAZARD / EXPOSURE	ACUTE HAZARDS / SYMPTOMS	PREVENTION	FIRST AID / FIRE FIGHTING
FIRE	Flammable.	NO open flames, NO sparks, and NO smoking.	Alcohol-resistant foam, powder, carbon dioxide.
EXPLOSION	Above 23°C explosive vapour/air mixtures may be formed.	Above 23°C use a closed system, ventilation, and explosion-proof electrical equipment.	In case of fire: keep cylinder cool by spraying with water.

EXPOSURE
Inhalation	Cough. Drowsiness. Headache. Nausea. Sore throat.	Ventilation, local exhaust, or breathing protection.	Fresh air, rest. Refer for medical attention.
Skin	MAY BE ABSORBED! Dry skin.	Protective gloves. Protective clothing.	Remove contaminated clothes. Rinse and then wash skin with water and soap. Refer for medical attention.
Eyes	Redness. Pain. Blurred vision.	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 take to a doctor.
Ingestion	Abdominal pain. Diarrhoea. Sore throat. (Further see Inhalation).	Do not eat, drink, or smoke during work.	Rinse mouth. Do NOT induce vomiting. 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. (Extra personal protection: self-contained breathing apparatus).	EU classification T Symbol R: 10-48/23-62-67 S: (1/2-)36/37-45 UN classification UN Hazard Class: 3 UN Pack Group: III	Note: 6

EMERGENCY RESPONSE	SAFE STORAGE
Transport Emergency Card: TEC (R)-30G35 NFPA Code: H 2; F 3; R 0.	Fireproof. Separated from strong oxidants.

IMPORTANT DATA

Physical State; Appearance
COLOURLESS LIQUID, WITH CHARACTERISTIC ODOUR.

Chemical dangers
Reacts violently with oxidants causing fire and explosion hazard. Attacks plastics.

Occupational exposure limits
TLV: 5 ppm as TWA; 10 ppm as STEL; (skin); BEI issued (ACGIH 2006).
MAK: 5 ppm, 21 mg/m³; Peak limitation category: II(8); skin absorption (H); (DFG 2006).

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

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

Effects of short-term exposure
The substance irritates the eyes and the respiratory tract. The substance may cause effects on the nervous system. Exposure far above the OEL may result in unconsciousness.

Effects of long-term or repeated exposure
Repeated or prolonged contact with skin may cause dermatitis. The substance may have effects on the nervous system.

PHYSICAL PROPERTIES

ENVIRONMENTAL DATA

Boiling point: 126-128°C
Melting point: -57°C
Relative density (water = 1): 0.8
Solubility in water, g/100 ml at 20°C: 1.4
Vapour pressure, kPa at 20°C: 0.36
Relative vapour density (air = 1): 3.5
Relative density of the vapour/air-mixture at 20°C (air = 1): 1.01
Flash point: 23°C (c.c.)
Auto-ignition temperature: 423°C
Explosive limits, vol% in air: 1.2-8.0
Octanol/water partition coefficient as log Pow: 1.38

NOTES

Use of alcoholic beverages enhances the harmful effect.
MBK potentiates the toxicity of some other chemical substances like chloroform, carbon tetrachloride, ethanol.
Depending on the degree of exposure, periodic medical examination is indicated.
Card has been partially updated in July 2007: see Occupational Exposure Limits, EU Classification, Fire fighting.

IPCS
International
Programme on
Chemical Safety

Prepared in the context of cooperation between the International Programme on Chemical Safety and the European Commission
© IPCS 2006

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Neither the EC nor the IPCS nor any person acting on behalf of the EC or the IPCS is responsible for the use which might be made of this information.

Updated by AS. Approved by GS. Last update: 29.01.2008