4-Methyl-2-t-Butylphenol

  • 2-tert-Butyl-p-cresol
Formula
2-[(CH3)3C]-4-(CH3)C6H3OH
Structure
Description
White to light yellow, crystalline powder.
Uses
Chemical intermediate for aldehyde condensates (rubber antioxidants, for 2,2'-methylenebis(4-methyl-6-t-butylphenol), with sulfur dichloride for rubber antioxidants, for a benzotriazole uv light stabilizer, for 6-(5-chlorobenzotriazole) deriv, for diazo derivatives.

Registry Numbers and Inventories.
CAS
2409-55-4
EC (EINECS/ELINCS)
219-314-6
EC Class
irritant
S 26 36/37/39 45
RTECS
GO7000000
RTECS class
Tumorigen; Mutagen; Primary Irritant
UN (DOT)
2811
Beilstein/Gmelin
1817645
Beilstein Reference
4-06-00-03397
Swiss Giftliste 1
G-8134
Canada DSL/NDSL
DSL
US TSCA
Listed
Austrailia AICS
Listed
New Zealand
Listed
Japan ENCS (MITI)
Listed
Korea ECL
Listed

Properties.
Formula
C11H16O
Formula mass
164.25
Melting point, °C
49 - 52
Boiling point, °C
244
Vapor pressure, mmHg
0.03
Vapor density (air=1)
5.7
Density
0.961 g/cm3 (20 C)
Solubility in water
Insoluble
Refractive index
1.5155 (20 C)
Heat of fusion
17.2 kJ/mol
Heat of vaporization
63.02 kJ/mol
Heat of combustion
-6308 kJ/mol

Hazards and Protection.
Storage
Store in a cool, dry, well-ventilated area away from incompatible substances. Keep containers tightly closed.
Handling
Use only in a well ventilated area. Avoid contact with skin and eyes. Keep container tightly closed. Avoid ingestion and inhalation. Wash clothing before reuse.
Protection
Eyes: Wear appropriate protective eyeglasses or chemical safety goggles as described by OSHA's eye and face protection regulations in 29 CFR 1910.133 or European Standard EN166. Skin: Wear appropriate gloves to prevent skin exposure. Clothing: Wear appropriate clothing to prevent skin exposure.
Respirators
A respiratory protection program that meets OSHA's 29 CFR 1910.134 and ANSI Z88.2 requirements or European Standard EN 149 must be followed whenever workplace conditions warrant a respirator's use.
Small spills/leaks
Clean up spills immediately, using the appropriate protective equipment. Sweep up, then place into a suitable container for disposal. Avoid generating dusty conditions. Provide ventilation.
Disposal code
3
Stability
Stable at room temperature in closed containers under normal storage and handling conditions.
Incompatibilities
Strong oxidizing agents.
Decomposition
Carbon monoxide, irritating and toxic fumes and gases, carbon dioxide.

Fire.
Flash Point,°C
105
Fire fighting
Wear a self-contained breathing apparatus in pressure-demand, MSHA/NIOSH (approved or equivalent), and full protective gear. During a fire, irritating and highly toxic gases may be generated by thermal decomposition or combustion. To extinguish fire use water spray, dry chemical, carbon dioxide, or appropriate foam.
Fire potential
Non-combustible, substance itself does not burn but may decompose upon heating to produce corrosive and/or toxic fumes.
Hazards
Contact with metals may evolve flammable hydrogen gas.
Combustion products
Fire may produce irritating, corrosive and/or toxic gases.

Health.
Poison_Class
4
Exposure effects
   Ingestion
Causes gastrointestinal irritation with nausea, vomiting and diarrhea.
   Inhalation
Causes respiratory tract irritation.
   Skin
Causes skin irritation.
   Eyes
Causes eye irritation.

First aid
 
   Ingestion
Never give anything by mouth to an unconscious person. Get medical aid. Do NOT induce vomiting. If conscious and alert, rinse mouth and drink 2-4 cupfuls of milk or water.
   Inhalation
Remove from exposure to fresh air immediately. If not breathing, give artificial respiration. If breathing is difficult, give oxygen. Get medical aid.
   Skin
Get medical aid. Flush skin with plenty of soap and water for at least 15 minutes while removing contaminated clothing and shoes. Wash clothing before reuse.
   Eyes
Flush eyes with plenty of water for at least 15 minutes, occasionally lifting the upper and lower eyelids. Get medical aid.

Transport.
UN number
2811
Response guide
Hazard class
6.1
Packing Group
I; II; III
 
21. Phenols. Cresols
HS Code
2907 19 00