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CUMENEICSC: 0170
(1-Methylethyl)benzene
2-Phenylpropane
Isopropylbenzene
April 2014
CAS #: 98-82-8
UN #: 1918
EC Number: 202-704-5

  ACUTE HAZARDS PREVENTION FIRE FIGHTING
FIRE & EXPLOSION Flammable.  Above 31°C explosive vapour/air mixtures may be formed.  NO open flames, NO sparks and NO smoking.  Above 31°C use a closed system, ventilation and explosion-proof electrical equipment. Prevent build-up of electrostatic charges (e.g., by grounding).  Use powder, AFFF, foam, carbon dioxide.  In case of fire: keep drums, etc., cool by spraying with water. 

 AVOID ALL CONTACT!  
  SYMPTOMS PREVENTION FIRST AID
Inhalation Dizziness. Incoordination. Drowsiness. Headache.  Use ventilation, local exhaust or breathing protection.  Fresh air, rest. Refer for medical attention. 
Skin Dry skin.  Protective gloves. Protective clothing.  Remove contaminated clothes. Rinse and then wash skin with water and soap. 
Eyes Redness.  Wear safety spectacles.  Rinse with plenty of water (remove contact lenses if easily possible). 
Ingestion See Inhalation. Aspiration hazard!  Do not eat, drink, or smoke during work.  Rinse mouth. Do NOT induce vomiting. Refer immediately 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. 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 let this chemical enter the environment. 

According to UN GHS Criteria

flam;flamecancer;health hazexcl mark;warnenviro;aqua
DANGER
Flammable liquid and vapour
Harmful if swallowed
Suspected of causing cancer
May be fatal if swallowed and enters airways
Very toxic to aquatic life 

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

STORAGE
Fireproof. Separated from strong oxidants and acids. Cool. Keep in the dark. Store only if stabilized. Store in an area without drain or sewer access. Provision to contain effluent from fire extinguishing. 
PACKAGING
Marine pollutant. 
CUMENE ICSC: 0170
PHYSICAL & CHEMICAL INFORMATION

Physical State; Appearance
COLOURLESS LIQUID WITH CHARACTERISTIC ODOUR. 

Physical dangers
As a result of flow, agitation, etc., electrostatic charges can be generated. 

Chemical dangers
Reacts violently with acids and strong oxidants. This generates fire and explosion hazard. The substance can form explosive peroxides. 

Formula: C9H12 / C6H5CH(CH3)2
Molecular mass: 120.2
Boiling point: 152°C
Melting point: -96°C
Relative density (water = 1): 0.90
Solubility in water, g/l at 20°C: 0.2 (very poor)
Vapour pressure, Pa at 20°C: 427
Relative vapour density (air = 1): 4.2
Relative density of the vapour/air-mixture at 20°C (air = 1): 1.01
Flash point: 31°C c.c.
Auto-ignition temperature: 420°C
Explosive limits, vol% in air: 0.9-6.5
Octanol/water partition coefficient as log Pow: 3.66
Viscosity: 0.85 mm²/s at 25°C 


EXPOSURE & HEALTH EFFECTS

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

Effects of short-term exposure
If swallowed the substance easily enters the airways and could result in aspiration pneumonitis. 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
Repeated or prolonged contact with skin may cause dermatitis. The substance may have effects on the liver and upper respiratory tract. This substance is possibly carcinogenic to humans. 


OCCUPATIONAL EXPOSURE LIMITS
TLV: 50 ppm as TWA.
MAK: 50 mg/m3, 10 ppm; peak limitation category: II(4); skin absorption (H); carcinogen category: 3B; pregnancy risk group: C.
EU-OEL: 100 mg/m3, 20 ppm as TWA; 250 mg/m3, 250 ppm as STEL; (skin) 

ENVIRONMENT
The substance is very toxic to aquatic organisms. It is strongly advised not to let the chemical enter into the environment. 

NOTES
Check for peroxides prior to distillation; eliminate if found.
Do NOT take working clothes home. 

ADDITIONAL INFORMATION
  EC Classification
Symbol: Xn, N; R: 10-37-51/53-65; S: (2)-24-37-61-62; Note: C 

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    See Also:
       Toxicological Abbreviations
       Cumene (CICADS 18, 1999)