p-tert-Butylpyrocatechol

  • 4-tert-Butyl-1,2-benzenediol
  • 1,2-Benzenediol, 4-(1,1-dimethylethyl)-
  • 4-tert-Butyl-1,2-dihydroxybenzene
  • 5-tert-Butylcatechol
  • 4-tert-Butylcatechol
Formula
4-[(CH3)3C]C6H3-1,2-(OH)2
Structure
Description
White crystals.

Registry Numbers and Inventories.
CAS
98-29-3
EC (EINECS/ELINCS)
202-653-9
EC Class
harmful, corrosive, dangerous for the environment
R 21 36/37/38 43
S 26 28 36/37
RTECS
UX1400000
RTECS class
Tumorigen; Mutagen; Primary Irritant
UN (DOT)
2811
Beilstein/Gmelin
2043335
Beilstein Reference
4-06-00-06014
Swiss Giftliste 1
G-1523
Canada DSL/NDSL
DSL
US TSCA
Listed
Austrailia AICS
Listed
New Zealand
Listed
Japan ENCS (MITI)
Listed
Korea ECL
Listed

Properties.
Formula
C10H14O2
Formula mass
166.22
Melting point, °C
53
Boiling point, °C
285
Vapor pressure, mmHg
0.0016 (25 C)
Saturation Concentration
3.68 ppm (0.00013%) at 25 C (calculated)
Critical temperature
502
Critical pressure
36.52
Density
1.0317 g/cm3 (75 C)
Solubility in water
2 g/L
Viscosity
90 cSt 25 C
pKa/pKb
9.66 (pKa)
Partition coefficient, pKow
2.94
Heat of fusion
4.5 kJ/mol
Heat of vaporization
54.6 kJ/mol
Heat of combustion
-5471 kJ/mol

Hazards and Protection.
Storage
Store in a cool, dry place. Do not store in direct sunlight. Store in a tightly closed container. Do not expose to air.
Handling
Wash thoroughly after handling. Wash hands before eating. Use with adequate ventilation. Minimize dust generation and accumulation. Avoid breathing dust, vapor, mist, or gas. Take precautionary measures against static discharges. Do not get on skin or in eyes. Avoid ingestion and inhalation.
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 protective gloves to prevent skin exposure. Clothing: Wear appropriate protective clothing to prevent skin exposure.
Respirators
Follow the OSHA respirator regulations found in 29CFR 1910.134 or European Standard EN 149. Always use a NIOSH or European Standard EN 149 approved respirator when necessary.
Small spills/leaks
Vacuum or sweep up material and place into a suitable disposal container. Clean up spills immediately, using the appropriate protective equipment. Scoop up with a nonsparking tool, then place into a suitable container for disposal. Avoid generating dusty conditions. Remove all sources of ignition.
Disposal code
3
Stability
Stable under normal temperatures and pressures.
Incompatibilities
Strong oxidizing agents, iron, and carbon steel
Decomposition
Carbon monoxide, carbon dioxide.

Fire.
Flash Point,°C
129
Autoignition, °C
160
Upper exp. limit, %
5.8
Lower exp. limit, %
0.9
Fire fighting
Wear a self-contained breathing apparatus in pressure-demand, MSHA/NIOSH (approved or equivalent), and full protective gear. Dusts at sufficient concentrations can form explosive mixtures with air. During a fire, irritating and highly toxic gases may be generated by thermal decomposition or combustion. Use water spray to keep fire-exposed containers cool. Containers may explode when heated. To extinguish fire use water spray, dry chemical, carbon dioxide, or chemical foam. Cool containers with flooding quantities of water until well after fire is out.
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
2
 
Flammability
1
 
 
Reactivity
0
 

Health.
Poison_Class
2
Exposure effects
   Ingestion
May cause gastrointestinal irritation with nausea, vomiting and diarrhea.
   Inhalation
May cause respiratory tract irritation. Inhalation of vapor may cause respiratory tract irritation.
   Skin
Causes severe skin irritation. Harmful if absorbed through the skin.
   Eyes
Causes severe eye irritation.

First aid
 
   Ingestion
Do NOT induce vomiting. If victim is conscious and alert, give 2-4 cupfuls of milk or water. Get medical aid.
   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
Immediately 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
 
20. Alcohols. Glycols
HS Code
2907 29 00