2-tert-Butyl-4,6-dimethylphenol

  • 2,4-Dimethyl-6-tert-butylphenol
  • 2-Methyl-6-tert-butyl-p-cresol
  • 6-(1,1-Dimethylethyl)-2,4-dimethylphenol
  • Phenol, 2-(1,1-dimethylethyl)-4,6-dimethyl-
  • 6-tert-Butyl-2,4-xylenol
  • Topanol A
Formula
C12H18O
Structure
Uses
Antioxidant.

Registry Numbers and Inventories.
CAS
1879-09-0
EC (EINECS/ELINCS)
217-533-1
RTECS
ZE6825000
RTECS class
Other
UN (DOT)
2430
Beilstein/Gmelin
2935417
Swiss Giftliste 1
G-8144
Canada DSL/NDSL
DSL
US TSCA
Listed
Austrailia AICS
Listed
New Zealand
Listed
Japan ENCS (MITI)
Listed

Properties.
Formula
C12H18O
Formula mass
178.30
Melting point, °C
27
Boiling point, °C
249
Vapor pressure, mmHg
0.015 (25 C)
Density
0.917 g/cm3 (20 C)
Solubility in water
Insoluble
Refractive index
1.6186 (20 C)
pKa/pKb
12.00 (pKa)
Partition coefficient, pKow
4.09
Heat of vaporization
50.6 kJ/mol

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
Keep material out of water sources and sewers. Build dikes to contain flow as necessary. Attempt to stop leak if without undue personnel hazard.
Stability
No data.
Incompatibilities
Reacts as weak organic acids Incompatible with strong reducing substances such as hydrides, nitrides, alkali metals, and sulfides.

Fire.
Flash Point,°C
111
Fire fighting
Use water in flooding quantities as fog. Use foam, dry chemical, or carbon dioxide. Apply water from as far a distance as possible. Keep run-off water out of sewers and water sources.
Fire potential
Combustible material: may burn but does not ignite readily.
Hazards
When heated, vapors may form explosive mixtures with air: indoors, outdoors, and sewers explosion hazards.
Combustion products
Fire may produce irritating, corrosive and/or toxic gases.

Health.
Poison_Class
2
Exposure effects
   Ingestion
See Inhalation.
   Inhalation
TOXIC; inhalation, ingestion, or skin contact with material may cause severe injury or death. Effects of contact or inhalation may be delayed.
   Skin
Contact with molten substance may cause severe burns to skin and eyes. See Inhalation.
   Eyes
See Inhalation.

First aid
 
   Ingestion
Seek medical assistance.
   Inhalation
Move victim to fresh air. Apply artificial respiration if victim is not breathing. Do not use mouth-to-mouth method if victim ingested or inhaled the substance; induce artificial respiration with the aid of a pocket mask equipped with a one-way valve or other proper respiratory medical device. Administer oxygen if breathing is difficult.
   Skin
Remove and isolate contaminated clothing and shoes. Immediately flush with running water for at least 20 minutes. For minor skin contact, avoid spreading material on unaffected skin.
   Eyes
Immediately flush with running water for at least 20 minutes.

Transport.
UN number
2430
Response guide
Hazard class
8
Packing Group
I; II; III
 
21. Phenols. Cresols
Std. Transport #
4933020