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METHYLCYCLOHEXANOL (MIXED ISOMERS)ICSC: 0292
December 2001
CAS #: 25639-42-3Hexahydromethylphenol
Hexahydrocresol
UN #: 2617
EINECS #: 247-152-6

  ACUTE HAZARDS PREVENTION FIRE FIGHTING
FIRE & EXPLOSION Flammable.  Above 41°C explosive vapour/air mixtures may be formed.  NO open flames, NO sparks and NO smoking.  Above 41°C use a closed system and ventilation.  Use AFFF, alcohol-resistant foam, dry powder, carbon dioxide.  In case of fire: keep drums, etc., cool by spraying with water. 

   
  SYMPTOMS ACUTE HAZARDS FIRST AID
Inhalation Cough. Headache.  Use ventilation.  Fresh air, rest. Refer for medical attention. 
Skin Redness.  Protective gloves.  Remove contaminated clothes. Rinse and then wash skin with water and soap. 
Eyes Redness.  Wear safety spectacles.  First rinse with plenty of water for several minutes (remove contact lenses if easily possible), then refer for medical attention. 
Ingestion   Do not eat, drink, or smoke during work.  Rinse mouth. 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. 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. 

According to UN GHS Criteria

 

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

STORAGE
Fireproof. 
PACKAGING
 
METHYLCYCLOHEXANOL (MIXED ISOMERS) ICSC: 0292
PHYSICAL & CHEMICAL INFORMATION

Physical State; Appearance
COLOURLESS VISCOUS LIQUID WITH CHARACTERISTIC ODOUR. 

Physical dangers
 

Chemical dangers
 

Formula: C7H14O
Molecular mass: 114.2
Boiling point: 174°C
Melting point: <-50°C
Relative density (water = 1): 0.92
Solubility in water, g/100ml at 20°C: 3-4
Vapour pressure, kPa at 30°C: 0.20
Relative vapour density (air = 1): 3.9
Flash point: 41°C c.c.
Auto-ignition temperature: 296°C
Octanol/water partition coefficient as log Pow: 2.05  


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 is mildly irritating to the eyes and skin. The vapour at high levels is irritating to the eyes and upper respiratory tract. 

Inhalation risk
A harmful contamination of the air will not or will only very slowly be reached on evaporation of this substance at 20°C. 

Effects of long-term or repeated exposure
Repeated or prolonged contact with skin may cause dermatitis. 


Occupational exposure limits
TLV: 50 ppm as TWA 

ENVIRONMENT
 

NOTES
This substance is a mixture of three isomers (ortho, meta and para), with the meta and para forms predominating.
The odour warning when the exposure limit value is exceeded is insufficient. 

ADDITIONAL INFORMATION
  EC Classification
Symbol: Xn; R: 20; S: (2)-24/25; Note: C 

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    See Also:
       Toxicological Abbreviations