Safety data sheet
According to EC Directive 91/155/EEC
MERCK
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1. Identification of the substance/preparation and of the company/undertaking
Identification of the product
Catalogue No.: 106014
Product name: Ethyl methyl ketone (2-butanone) extra pure

Manufacturer/supplier identification
Company: Merck Ltd.
9th Floor, Monterey Tower, 2170 New Petchburi Road, Bangkapi, Huaykwang, Bangkok 10320
Tel: (662) 308 - 0218

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2. Composition/information on ingredients
Synonyms
Methyl ethyl ketone ; 2-Butanone ; MEK

CAS-No.: 78-93-3 EC-Index-No.: 606-002-00-3
Molar mass: 72.11 EINECS-No.: 201-159-0
Molecular formula: C4H8O

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3. Hazards identification
Highly flammable. Irritating to eyes and respiratory system.

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4. First aid measures
After inhalation: fresh air. If necessary apply mouth to mouth resuscitation or mechanical ventilation. Keep airways free.
After skin contact: wash off with plenty of water. Remove contaminated clothing.
After eye contact: rinse out with plenty of water for at least 10 minutes with the eyelid held wide open. Summon eye specialist.
After swallowing: immediately make victim drink plenty of water. Subsequently administer: activated charcoal (20 - 40g in 10% slurry). Risk of aspiration! Do not induce vomiting. No milk. No digestible oils. Keepairways free. Summon doctor. Laxative: sodium sulfate (1 tablespoon/ 1/4 l water). After ingestion of large amounts: gastric lavage.

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5. Fire-fighting measures
Suitable extinguishing media:
water , Powder, foam.

Special risks:
Combustible. Vapours heavier than air. Formation of explosible mixtures possible with air. Keep away from sources of ignition.

Special protective equipment for fire fighting:
Do not stay in dangerous zone without self-contained breathing apparatus.

Other information:
Take measures to prevent electrostatic charging. Cool container with spray water from a save distance. Prevent fire-fighting water from entering surface water or groundwater.

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6. Accidental release measures
Person-related precautionary measures:
Do not inhale vapours/aerosols.

Procedures for cleaning / absorption:
Take up with liquid-absorbent material (e.g. Chemizorb® ). Forward for disposal. Clean up affected area.

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7. Handling and storage
Handling:
Take measures to prevent electrostatic charging.

Storage:
Tightly closed. In a well-ventilated place. Keep away from sources of ignition and heat. At +5°C to +30°C.

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8. Exposure controls/personal protection
Specific control parameter
MAK Germany (max. workplace conc.)
2-Butanone 200 ml/m3 or 600 mg/m3

Personal protective equipment:
Respiratory protection: required when vapours/aerosols are generated.
Eye protection: required
Hand protection: required
Industrial hygiene: Change contaminated clothing. Apply skin-protective barrier cream. Wash hands after working with substance.

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9. Physical and chemical properties
Form: liquid
Colour: colourless
Odour: of solvents
pH value
at 300 g/l water (20 °C) ~ 5.5
Viscosity dynamic (15 °C) 0.42 mPa*s
Melting temperature -86 °C
Boiling temperature 79 °C
Ignition temperature 505 °C
Flash point -1 °C
Explosion limits lower 1.8 Vol%
upper 11.5 Vol%
Vapour pressure (20 °C) 105 mbar
Density (20 °C) 0.80 g/cm3
Solubility in water (20 °C) 290 g/l
log P(oct): 0.26

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10. Stability and reactivity
Conditions to be avoided
Heating.

Substances to be avoided
oxidizing agent (i.a. CrO3 , hydrogen peroxide / nitric acid , hydrogen peroxide / conc. sulfuric acid ) , chloroform / alkali hydroxides

Hazardous decomposition products
peroxides

Further information
highly inflammable ;
Explosible with air in a vaporous/gaseous state.

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11. Toxicological information
Acute toxicity
LD50 (oral, rat): 2737 mg/kg

Subacute to chronic toxicity
An embryotoxic effect need not be feared when the threshold limit value is observed.

Further toxicological information

After skin contact: Irritations Degreasing effect on the skin, possibly followed by secondary inflammation. Danger of skin absorption.
After eye contact: Irritations. mucosal irritations
Swallowing causes nausea and vomiting.
After absorption of large quantities: CNS disorders , drowsiness , dizziness , inebriation , drop in blood pressure , narcosis Causes impaired function of: respiratory tract , heart
Good warning effect due to low odour threshold.

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12. Ecological information
Biologic degradation:
Readily degradable in water.

Behavior in environmental compartments:
Distribution: log P(oct):: 0.26 ;
Low bioaccumulation potential.

Ecotoxic effects:
Biological effects:
aquatic organisms LC50: > 1000 mg/l /96 h ;
Fish toxicity: L.idus LC50: 4600 mg/l ;
Bacterial toxicity: Ps.pudita EC0: 1150 mg/l ;
Daphnia toxicity: Daphnia magna EC50: 7060 mg/l ;

Further ecologic data:
ThOD: 2.44 g/g ;
COD 100 % of ThOD

No ecological problems are to be expected when the product is handled and used with due care and attention.

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13. Disposal considerations
Product:
There are no uniform EC Regulations for the disposal of chemicals or residues. Chemical residues generally count as special waste. The disposal of the latter is regulated in the EC member countries through corresponding laws and regulations. We recommend that you contact either the authorities in charge or approved waste disposal companies which will advise you on how to dispose of special waste.

Packaging:
Disposal in compliance with official regulations. Handle contaminated packaging in the same way as the substance itself. If not officially specified differently, non-contaminated packaging may be treated like household waste or recycled.

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14. Transport information
Transport over land ADR/RID and GGVS/GGVE (Germany)
GGVS/GGVE class: 3 Number and letter: 3b
ADR/RID class: 3 Number and letter: 3b
Name of material: 1193 METHYLETHYLKETON(ETHYLMETHYLKETON)

River transport ADN/ADNR
not examined

Sea transport IMDG
IMDG class: 3.2 UN-No.: 1193 Packaging group: II
Ems: 3-06 MFAG: 300
Correct technical name: ETHYL METHYL KETONE

Air transport ICAO-TI and IATA-DGR
ICAO/IATA class: 3 UN/ID-No.: 1193 Packaging group: II
Correct technical name: ETHYL METHYL KETONE

The transport regulations are cited according to international regulations and in the form applicable in Germany (GGVS/GGVE). Possible national deviations in other countries are not considered.

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15. Regulatory information
Labelling according to EC Directives
Symbol: F Highly flammable immediately and show this container or label.
Xi Irritant immediately and show this container or label.
R-phrases: R 11-36/37 Highly flammable. Irritating to eyes and respiratory system.
S-phrases: S 9-16-25-33 Keep container in a well-ventilated place. Keep away from sources of ignition - No smoking. Avoid contact with eyes. Take precautionary measures against static discharges.
EC-No.: 201-159-0 EC label

German regulations
Water pollution class 1 (slightly polluting substance)

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16. Other information
Reason for alteration
Change in the chapter on first aid measures.

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