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5-METHYL-3-HEPTANONE ICSC: 1391
Date of Peer Review: March 2001

5-Methyl heptan-3-one
3-Heptanone, 5-methyl
Ethyl amyl ketone
Ethyl sec-amyl ketone
CAS # 541-85-5 C8H16O
RTECS # MJ7350000 Molecular mass: 128.24
UN # 2271
EC # 606-020-00-1
TYPES OF HAZARD / EXPOSURE ACUTE HAZARDS / SYMPTOMS PREVENTION FIRST AID / FIRE FIGHTING
FIRE Flammable.
NO open flames, NO sparks, and NO smoking.
Water spray, powder, AFFF, foam, carbon dioxide.
EXPLOSION Above 43C explosive vapour/air mixtures may be formed.
Above 43C use a closed system, ventilation, and explosion-proof electrical equipment.
In case of fire: keep cylinder cool by spraying with water.
EXPOSURE


Inhalation Cough. Dizziness. Headache. Nausea. Sore throat.
Ventilation, local exhaust, and breathing protection.
Fresh air, rest. Refer for medical attention.
Skin Dry skin. Redness.
Protective gloves.
Remove contaminated clothes. Rinse skin with plenty of water or shower.
Eyes Redness. Pain.
Safety spectacles.
First rinse with plenty of water for several minutes (remove contact lenses if easily possible), then take to a doctor.
Ingestion Vomiting. (Further see 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
Ventilation. Remove all ignition sources. 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: filter respirator for organic gases and vapours.
EU Classification
Symbol: Xi
R: 10-36/37
S: (2-)-23
UN Classification
UN Hazard Class: 3
UN Pack Group: III
EMERGENCY RESPONSE SAFE STORAGE
Transport Emergency Card: TEC (R)-30S2271 or 30GF1-III
Fireproof. Separated from strong oxidants, strong bases, strong reducing agents. Well closed.
IPCS
International
Programme on
Chemical Safety
Prepared in the context of cooperation between the International Programme on Chemical Safety and the Commission of the European Communities IPCS, CEC 2004

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5-METHYL-3-HEPTANONE ICSC: 1391
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 with oxidants and strong reducing agents and strong bases causing fire hazard.

OCCUPATIONAL EXPOSURE LIMITS:
TLV: 25 ppm as TWA; (ACGIH 2004).
MAK: 10 ppm, 53 mg/m; Peak limitation category: I(2); Pregnancy risk group: IIc; (DFG 2004).
EU OEL: 10 ppm, 53 mg/m as TWA; 20 ppm, 107 mg/m as STEL.
ROUTES OF EXPOSURE:
The substance can be absorbed into the body by inhalation.

INHALATION RISK:
A harmful contamination of the air will be reached rather slowly on evaporation of this substance at 20C.

EFFECTS OF SHORT-TERM EXPOSURE:
The substance is irritating to the eyes, the skin 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.
PHYSICAL PROPERTIES
Boiling point: 157-162C
Melting point: -56.7C
Relative density (water = 1): 0.82
Solubility in water, g/100 ml at 20C: 0.3
Vapour pressure, kPa at 25C: 0.267
Relative vapour density (air = 1): 4.4
Relative density of the vapour/air-mixture at 20C (air = 1): 1.0
Flash point: 43C c.c., 57.2C o.c.
ENVIRONMENTAL DATA

NOTES
Explosive limits are unknown in literature, although the substance is flammable and has a flash point <61C. The odour warning when the exposure limit value is exceeded is insufficient.
Card has been partly updated in April 2005. See sections Occupational Exposure Limits, Emergency Response.
ADDITIONAL INFORMATION


LEGAL NOTICE Neither the CEC nor the IPCS nor any person acting on behalf of the CEC or the IPCS is responsible for the use which might be made of this information
IPCS, CEC 2004