Dicumyl

  • Diisopropylbiphenyl
  • Isopropyl(isopropylphenyl)benzene
  • 1,1'-Biphenyl, ar,ar'-bis(1-methylethyl)-
Formula
C18H22
Structure
Uses
PG and MPG formulations are used as solvents in the manufacture of carbonless copy paper.

Registry Numbers and Inventories.
CAS
36876-13-8
EC (EINECS/ELINCS)
253-247-3
UN (DOT)
1325
Beilstein/Gmelin
NA
Canada DSL/NDSL
NDSL
US TSCA
Listed
Japan ENCS (MITI)
Listed
Korea ECL
Listed

Properties.
Formula
C18H22
Formula mass
238.37
Melting point, °C
67
Boiling point, °C
325
Critical temperature
531
Critical pressure
18.7
Solubility in water
Insoluble
Partition coefficient, pKow
7.3

Hazards and Protection.
Storage
Keep in a cool, dry, dark location in a tightly sealed container or cylinder. Keep away from incompatible materials, ignition sources and untrained individuals. Secure and label area. Protect containers/cylinders from physical damage.
Handling
All chemicals should be considered hazardous. Avoid direct physical contact. Use appropriate, approved safety equipment. Untrained individuals should not handle this chemical or its container. Handling should occur in a chemical fume hood.
Protection
Wear appropriate protective gloves, clothing and goggles.
Respirators
Wear positive pressure self-contained breathing apparatus (SCBA).
Small spills/leaks
Make no contact with the spilled material. ELIMINATE all ignition sources and ground all equipment. With clean shovel place material into clean, dry container and cover loosely; move containers from spill area.
Stability
No data.

Fire.
Fire fighting
Small Fires: Dry chemical, carbon dioxide, sand, earth, water spray or regular foam. Large Fires: Water spray, fog or regular foam.
Fire potential
Flammable/combustible material. May be ignited by friction, heat, sparks or flames.
Combustion products
Fire may produce irritating and/or toxic gases.

Health.
Exposure effects
Headache, fatigue, numbness, and aching limbs have occurred in workers. Peripheral and central nerve damage may occur.
   Ingestion
Nausea, diffuse pain, and indigestion have been reported in workers with prolonged exposure to biphenyl.
   Inhalation
Respiratory tract irritation and bronchitis have been reported.
   Skin
Percutaneous absorption through intact skin has been noted.
   Eyes
See Skin.

First aid
 
   Ingestion
Following ingestion and/or prior to gastric evacuation, immediately dilute with 4 to 8 ounces (120 to 240 ml) of milk or water (not to exceed 15 ml/kg in a child). Consider after ingestion of a potentially life-threatening amount of poison if it can be performed soon after ingestion (generally within 1 hour). Activated charcoal: administer charcoal as a slurry (240 ml water/30 g charcoal). Usual dose: 25 to 100 g in adults/adolescents.
   Inhalation
Move patient to fresh air. Monitor for respiratory distress. If cough or difficulty breathing develops, evaluate for respiratory tract irritation, bronchitis, or pneumonitis. Administer oxygen and assist ventilation as required. Treat bronchospasm with beta2 agonist and corticosteroid aerosols.
   Skin
Remove contaminated clothing and wash exposed area thoroughly with soap and water. A physician should examine the area if irritation or pain persists.
   Eyes
Irrigate exposed eyes with copious amounts of tepid water for at least 15 minutes. If irritation, pain, swelling, lacrimation, or photophobia persist, the patient should be seen in a health care facility.

Transport.
UN number
1325
Response guide
Hazard class
4.1
Packing Group
II; III
 
32. Aromatic hydrocarbons