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5-METHYL-3-HEPTANONEICSC: 1391
March 2001
CAS #: 541-85-55-Methyl heptan-3-one
3-Heptanone, 5-methyl
Ethyl amyl ketone
Ethyl sec-amyl ketone
UN #: 2271
EINECS #: 208-793-7

  ACUTE HAZARDS PREVENTION FIRE FIGHTING
FIRE & EXPLOSION Flammable.  Above 43°C explosive vapour/air mixtures may be formed.  NO open flames, NO sparks and NO smoking.  Above 43°C use a closed system, ventilation and explosion-proof electrical equipment.  Use water spray, powder, foam, carbon dioxide.  In case of fire: keep cylinder cool by spraying with water. 

   
  SYMPTOMS ACUTE HAZARDS FIRST AID
Inhalation Cough. Dizziness. Headache. Nausea. Sore throat.  Use ventilation, local exhaust or 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.  Wear safety spectacles.  First rinse with plenty of water for several minutes (remove contact lenses if easily possible), then refer for medical attention. 
Ingestion Vomiting. 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
Personal protection: filter respirator for organic gases and vapours adapted to the airborne concentration of the substance. 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. Then store and dispose of according to local regulations. Do NOT wash away into sewer. 

According to UN GHS Criteria

 

Transportation
UN Classification
UN Hazard Class: 3; UN Pack Group: III 

STORAGE
Fireproof. Separated from strong oxidants, strong bases and strong reducing agents. Well closed. 
PACKAGING
 
5-METHYL-3-HEPTANONE ICSC: 1391
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
Reacts with oxidants, strong reducing agents and strong bases. This generates fire hazard. 

Formula: C8H16O
Molecular mass: 128.24
Boiling point: 157-162°C
Melting point: -56.7°C
Relative density (water = 1): 0.82
Solubility in water, g/100ml at 20°C: 0.3
Vapour pressure, kPa at 25°C: 0.267
Relative vapour density (air = 1): 4.4
Relative density of the vapour/air-mixture at 20°C (air = 1): 1.0
Flash point: 43°C c.c., 57.2°C o.c. 


EXPOSURE & HEALTH EFFECTS

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

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

Inhalation risk
A harmful contamination of the air will be reached rather slowly 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. 


Occupational exposure limits
TLV: 10 ppm as TWA.
MAK: 53 mg/m3, 10 ppm; peak limitation category: I(2); pregnancy risk group: D.
EU-OEL: 53 mg/m3, 10 ppm as TWA; 107 mg/m3, 20 ppm as STEL 

ENVIRONMENT
 

NOTES
Explosive limits are unknown in literature, although the substance is flammable and has a flash point <61°C.
The odour warning when the exposure limit value is exceeded is insufficient. 

ADDITIONAL INFORMATION
  EC Classification
Symbol: Xi; R: 10-36/37; S: (2)-23 

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    See Also:
       Toxicological Abbreviations