Ethylbenzene

  • Phenylethane
  • Ethylbenzol
  • EB
Formula
C6H5C2H5
Structure
Description
Clear, colorless liquid with a characteristic, sweet, gasoline-like, aromatic odor.
Uses
Used in the production of synthetic rubber as a solvent or diluent, a component of automotive and aviation fuels, manufacture of cellulose acetate.

Registry Numbers and Inventories.
CAS
100-41-4
EC (EINECS/ELINCS)
202-849-4
EC Index Number
601-023-00-4
EC Class
Highly flammable; Harmful
R 11 20
S 16 24/25 29
RTECS
DA0700000
RTECS class
Tumorigen; Mutagen; Reproductive Effector; Human Data; Primary Irritant
UN (DOT)
1175
Merck
13,3801
Beilstein/Gmelin
1901871
Beilstein Reference
4-05-00-00885
RCRA
F003
Swiss Giftliste 1
G-1165
Canada DSL/NDSL
DSL
US TSCA
Listed
Austrailia AICS
Listed
New Zealand
Listed
Japan ENCS (MITI)
Listed
Korea ECL
Listed

Properties.
Formula
C8H10
Formula mass
106.17
Melting point, °C
-95
Boiling point, °C
136.2
Vapor pressure, mmHg
10 (25 C)
Vapor density (air=1)
3.66
Saturation Concentration
9200 ppm (0.92%) at 20 C; 12600 ppm (1.26%) at 25 C (calculated)
Evaporization number
0.84 (n-butyl acetate = 1); 8.8 (diethyl ether = 1)
Odor Threshold Odor threshold 140 ppm
Critical temperature
344
Critical pressure
35.5
Density
0.867 g/cm3 (20 C)
Solubility in water
150 mg/L
Viscosity
0.678 cp (20 C)
Surface tension
29.2 g/s2 (20 C)
Refractive index
1.4932 (20 C)
Dipole moment
0.24 D
Dielectric constant
2.3 (30 C)
Partition coefficient, pKow
3.15
Heat of fusion
9.2 kJ/mol
Heat of vaporization
42.3 kJ/mol
Heat of combustion
-4568 kJ/mol

Hazards and Protection.
Storage
Keep away from heat, sparks, and flame. Keep away from sources of ignition. Store in a tightly closed container. Keep from contact with oxidizing materials. Store in a cool, dry, well-ventilated area away from incompatible substances.
B2 D2A D2B
Handling
Wash thoroughly after handling. Use with adequate ventilation. Ground and bond containers when transferring material. Avoid contact with eyes, skin, and clothing. Empty containers retain product residue, (liquid and/or vapor), and can be dangerous. Keep container tightly closed. Avoid contact with heat, sparks and flame. Avoid ingestion and inhalation. Do not pressurize, cut, weld, braze, solder, drill, grind, or expose empty containers to heat, sparks or open flames.
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 and clothing to prevent skin exposure. Clothing: Wear appropriate protective gloves and 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
Absorb spill with inert material, (e.g., dry sand or earth), then place into a chemical waste container. Remove all sources of ignition. A vapor suppressing foam may be used to reduce vapors. Water spray may reduce vapor but may not prevent ignition in closed spaces.
Disposal code
1
Stability
Stable under normal temperatures and pressures.
Incompatibilities
Oxidizing agents.
Decomposition
Carbon monoxide, carbon dioxide.

Fire.
Flash Point,°C
15
Autoignition, °C
430
Upper exp. limit, %
7.8
Lower exp. limit, %
1.0
Fire fighting
Do not extinguish fire unless flow can be stopped. Use water in flooding quantities as fog. Solid streams of water may spread fire. Cool all affected containers with flooding quantities of water. Apply water from as far a distance as possible. Use foam, dry chemical, or carbon dioxide.
Fire potential
Flammable liquid and vapor.
Hazards
Vapors are heavier than air and may travel to a source of ignition and flash back. Liquid floats on water and may travel to a source of ignition and spread fire.
Combustion products
Irritating vapors are generated when heated.
Health
2
 
Flammability
3
 
 
Reactivity
0
 

Health.
Exposure limit(s)
OSHA PEL: TWA 100 ppm (435 mg/m3) NIOSH REL: TWA 100 ppm (435 mg/m3) ST 125 ppm (545 mg/m3) NIOSH IDLH: 800 ppm LEL
Carcinogin
G-A3, I-2B
Poison_Class
4
Exposure effects
Chronic inhalation may cause effects similar to those of acute inhalation.
   Ingestion
May cause irritation of the digestive tract. May cause central nervous system depression, characterized by excitement, followed by headache, dizziness, drowsiness, and nausea. Advanced stages may cause collapse, unconsciousness, coma and possible death due to respiratory failure. Aspiration of material into the lungs may cause chemical pneumonitis, which may be fatal.
   Inhalation
Inhalation of high concentrations may cause central nervous system effects characterized by headache, dizziness, unconsciousness and coma. Causes respiratory tract irritation. Vapors may cause dizziness or suffocation.
   Skin
Causes skin irritation. Prolonged and/or repeated contact may cause irritation and/or dermatitis. May be absorbed through the skin. Contact with the liquid may cause erythema, exfoliation and vesiculation.
   Eyes
Causes moderate eye irritation. Vapors may cause eye irritation.

First aid
 
   Ingestion
Do NOT induce vomiting. 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 immediately.
   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
1175
Response guide
Hazard class
3
Packing Group
II
 
USCG CHRIS Code
ETB
 
32 Aromatic hydrocarbons
HS Code
2902 60 00
 
Std. Transport #
4909163
 
IMO Pollution Category
B
IMO Hazard code
P