2-Ethylphenol

  • 1-ethyl-2-hydroxybenzene
  • o-ethylphenol
  • Phlorol
Formula
2-(C2H5)C6H4OH
Structure
Description
Colorless liquid, phenolic odor.
Uses
Pure 2-ethylphenol is used as a starting material for photochemicals.

Registry Numbers and Inventories.
CAS
90-00-6
EC (EINECS/ELINCS)
201-958-4
R 22 34
S 26 36/37/39 45
RTECS
SL4025000
RTECS class
Tumorigen
UN (DOT)
3145
Merck
13,3871
Beilstein/Gmelin
1099397
Beilstein Reference
4-06-00-03011
Canada DSL/NDSL
DSL
US TSCA
Listed
Austrailia AICS
Listed
New Zealand
Listed
Japan ENCS (MITI)
Listed
Korea ECL
Listed

Properties.
Formula
C8H10O
Formula mass
122.17
Melting point, °C
-18
Boiling point, °C
204.5
Vapor pressure, mmHg
0.18 (25 C)
Vapor density (air=1)
4.21
Density
1.0371 g/cm3 (0 C)
Solubility in water
Insoluble
Refractive index
1.5375 (18.7 C)
pKa/pKb
10.27 (pKa)
Partition coefficient, pKow
2.47
Heat of vaporization
45.9 kJ/mol

Hazards and Protection.
Storage
Store in a cool, dry place. Store in a tightly closed container.
Handling
Wash thoroughly after handling. Use only in a well ventilated area. Avoid contact with eyes, skin, and clothing. Keep container tightly closed. 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
Sweep up or absorb material, then place into a suitable clean, dry, closed container for disposal.
Disposal code
1
Stability
Stable under normal temperatures and pressures. Cooling liquid to - 30 deg C gives metstable crystal form, when kept for 24 - 48 hours this changes to stable crystal form.
Incompatibilities
Oxidizing agents, acid chlorides, acid anhydrides.
Decomposition
Carbon monoxide, carbon dioxide.

Fire.
Flash Point,°C
85
Fire fighting
Wear a self-contained breathing apparatus in pressure-demand, MSHA/NIOSH (approved or equivalent), and full protective gear. To extinguish fire, use water fog, dry chemical, carbon dioxide, or regular foam.
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.
Exposure effects
Abnormally low blood pressure, reduced body temperature, rapid breathing, and rapid heart rate may develop with severe toxicity. Initial CNS excitation, including seizures, is commonly followed by CNS depression ranging from lethargy to coma and death. Fetotoxicity and skeletal abnormalities have been reported in animal experiments.
   Ingestion
The toxicological properties of this substance have not been fully investigated.
   Inhalation
The toxicological properties of this substance have not been fully investigated.
   Skin
No information regarding skin irritation and other potential effects was found.
   Eyes
No information regarding eye irritation and other potential effects was found.

First aid
 
   Ingestion
If victim is conscious and alert, give 2-4 cupfuls of milk or water. Never give anything by mouth to an unconscious person. 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.
   Eyes
Flush eyes with plenty of water for at least 15 minutes, occasionally lifting the upper and lower eyelids. Get medical aid immediately.

Transport.
UN number
3145
Response guide
Hazard class
8
Packing Group
I; II; III
 
USCG CHRIS Code
EPL
 
21 Phenols, Cresols
HS Code
2907 19 00
 
IMO Chemical Code
17
IMO Pollution Category
A
IMO Hazard code
S/P