IPCS INCHEM Home
CYCLOHEXANONEICSC: 0425
April 2004
CAS #: 108-94-1Ketohexamethylene
Pimelic ketone
Cyclohexyl ketone
UN #: 1915
EINECS #: 203-631-1

  ACUTE HAZARDS PREVENTION FIRE FIGHTING
FIRE & EXPLOSION Flammable.  Above 44°C explosive vapour/air mixtures may be formed.  NO open flames, NO sparks and NO smoking.  Above 44°C use a closed system, ventilation and explosion-proof electrical equipment. Prevent build-up of electrostatic charges (e.g., by grounding).  Use alcohol-resistant foam, carbon dioxide, powder.  In case of fire: keep drums, etc., cool by spraying with water. 

   
  SYMPTOMS ACUTE HAZARDS FIRST AID
Inhalation Cough. Sore throat. Dizziness. Drowsiness.  Use ventilation, local exhaust or breathing protection.  Fresh air, rest. Refer for medical attention. 
Skin MAY BE ABSORBED! Dry skin. Redness.  Protective gloves. Protective clothing.  Remove contaminated clothes. Rinse skin with plenty of water or shower. Refer for medical attention . 
Eyes Redness. Pain.  Wear safety goggles or eye protection in combination with breathing protection.  First rinse with plenty of water for several minutes (remove contact lenses if easily possible), then refer for medical attention. 
Ingestion Abdominal pain. Burning sensation.  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: chemical protection suit and filter respirator for organic gases and vapours adapted to the airborne concentration of the substance. Remove all ignition sources. Ventilation. 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. 

According to UN GHS Criteria

 

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

STORAGE
Fireproof. Separated from strong oxidants. 
PACKAGING
 
CYCLOHEXANONE ICSC: 0425
PHYSICAL & CHEMICAL INFORMATION

Physical State; Appearance
COLOURLESS OILY LIQUID WITH CHARACTERISTIC ODOUR. 

Physical dangers
The vapour is heavier than air. As a result of flow, agitation, etc., electrostatic charges can be generated. 

Chemical dangers
Reacts with strong oxidants such as nitric acid. This generates fire and explosion hazard. 

Formula: C6H10O
Molecular mass: 98.14
Boiling point: 156°C
Melting point: -32.1°C
Relative density (water = 1): 0.95
Solubility in water, g/100ml at 20°C: 8.7
Vapour pressure, Pa at 20°C: 500
Relative vapour density (air = 1): 3.4
Relative density of the vapour/air-mixture at 20°C (air = 1): 1.01
Flash point: 44°C c.c.
Auto-ignition temperature: 420°C
Explosive limits, vol% in air: 1.1-9.4 (at 100°C)
Octanol/water partition coefficient as log Pow: 0.81
Electrical conductivity: 50000 pS/m  


EXPOSURE & HEALTH EFFECTS

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

Effects of short-term exposure
The substance and the vapour are irritating to the eyes, skin and respiratory tract. Exposure far above the OEL could cause lowering of consciousness. 

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
 


Occupational exposure limits
TLV: 20 ppm as TWA; 50 ppm as STEL; (skin); A3 (confirmed animal carcinogen with unknown relevance to humans).
MAK: skin absorption (H); carcinogen category: 3B.
EU-OEL: 40.8 mg/m3, 10 ppm as TWA; 81.6 mg/m3, 20 ppm as STEL; (skin) 

ENVIRONMENT
 

NOTES
 

ADDITIONAL INFORMATION
  EC Classification
Symbol: Xn; R: 10-20; S: (2)-25 

All rights reserved. The published material is being distributed without warranty of any kind, either expressed or implied. Neither ILO nor WHO nor the European Commission shall be responsible for the interpretation and use of the information contained in this material.
    See Also:
       Toxicological Abbreviations
       CYCLOHEXANONE (JECFA Evaluation)
       Cyclohexanone  (SIDS)
       Cyclohexanone  (IARC Summary & Evaluation, Volume 47, 1989)
       Cyclohexanone  (IARC Summary & Evaluation, Volume 71, 1999)