2,4-Di-tert-butyl-6-methylphenol

  • Phenol, 2,4-bis(1,1-dimethylethyl)-6-methyl-
  • 4,6-Di-tert-butyl-o-cresol
  • 2-Methyl-4,6-di-tert-butylphenol
  • 4,6-Di-tert-butyl-2-methylphenol
Formula
C15H24O
Structure

Registry Numbers and Inventories.
CAS
616-55-7
EC (EINECS/ELINCS)
210-485-2
Canada DSL/NDSL
NDSL
US TSCA
Listed
New Zealand
Listed
Japan ENCS (MITI)
Listed
Korea ECL
Listed

Properties.
Formula
C15H24O
Formula mass
220.35
Melting point, °C
51
Boiling point, °C
269
Vapor pressure, mmHg
0.0045 (25 C)
Density
0.891 g/cm3 (80 C)
Solubility in water
57 mg/L (25 C)
pKa/pKb
11.92 (pKa)
Partition coefficient, pKow
5.404
Heat of vaporization
52.75 kJ/mol

Hazards and Protection.
Storage
Keep containers tightly closed.
Protection
Compatible chemical-resistant gloves. Chemical safety goggles. Protective clothing.
Respirators
Use respirators and components tested and approved under appropriate government standards such as NIOSH (US) or CEN (EU). Where risk assessment shows air-purifying respirators are appropriate use a dust mask type N95 (US) or type P1 (EN 143) respirator.
Small spills/leaks
Sweep up, place in a bag and hold for waste disposal. Avoid raising dust. Ventilate area and wash spill site after material pickup is complete.
Stability
Stable at normal temperatures and pressures.
Incompatibilities
Oxidizing agents.
Decomposition
Oxides of carbon.

Fire.
Flash Point,°C
123
Fire fighting
Extinguish with water spray, carbon dioxide, dry chemical powder or appropriate foam. Wear self-contained breathing apparatus and protective clothing to prevent contact with skin and eyes.
Hazards
Emits toxic fumes under fire conditions.
Health
2
 
Flammability
0
 
 
Reactivity
0
 

Health.
Exposure effects
   Ingestion
May be harmful if swallowed.
   Inhalation
Material is irritating to mucous membranes and upper respiratory tract. May be harmful if inhaled.
   Skin
Causes skin irritation. May be harmful if absorbed through the skin.
   Eyes
Causes eye irritation.

First aid
 
   Ingestion
If swallowed, wash out mouth with water provided person is conscious. Call a physician.
   Inhalation
If inhaled, remove to fresh air. If not breathing give artificial respiration. If breathing is difficult, give oxygen.
   Skin
In case of contact, immediately wash skin with soap and copious amounts of water. Remove contaminated clothing and shoes. Call a physician.
   Eyes
In case of contact with eyes, flush with copious amounts of water for at least 15 minutes. Assure adequate flushing by separating the eyelids with fingers. Call a physician.

Transport.