Propylbenzene

  • 1-Phenylpropane
  • Isocumene
Formula
C6H5CH2CH2CH3
Structure
Description
Colorless liquid.
Uses
In textile dyeing & printing, as solvent for cellulose acetate.

Registry Numbers and Inventories.
CAS
103-65-1
EC (EINECS/ELINCS)
203-132-9
EC Index Number
601-024-00-X
EC Class
Flammable; Harmful; Irritant; Dangerous for the Environment
R 10 37 51/53 65
S 24 37 61 62
RTECS
DA8750000
RTECS class
Other
UN (DOT)
2364
Merck
12,8029
Beilstein/Gmelin
1903006
Beilstein Reference
4-05-00-00977
Swiss Giftliste 1
G-4411
Canada DSL/NDSL
DSL
US TSCA
Listed
Austrailia AICS
Listed
New Zealand
Listed
Japan ENCS (MITI)
Listed
Korea ECL
Listed

Properties.
Formula
C9H12
Formula mass
120.20
Melting point, °C
-99
Boiling point, °C
159
Vapor pressure, mmHg
2 (14 C)
Vapor density (air=1)
4.14
Saturation Concentration
3290 ppm (0.33%) at 20 C (calculated)
Critical temperature
365
Critical pressure
31.0
Density
0.862 g/cm3 (20 C)
Solubility in water
Slightly soluble
Viscosity
0.857 cp (20 C)
Surface tension
29.01 g/s2 (20 C)
Refractive index
1.4919 (20 C)
Partition coefficient, pKow
3.57
Heat of fusion
8.54 kJ/mol
Heat of vaporization
46.2 kJ/mol
Heat of combustion
-5234 kJ/mol

Hazards and Protection.
Storage
Keep away from heat, sparks, and flame. Keep away from sources of ignition. Keep container closed when not in use. Store in a tightly closed container. Store in a cool, dry, well-ventilated area away from incompatible substances. Flammables-area.
Handling
Wash thoroughly after handling. Remove contaminated clothing and wash before reuse. Ground and bond containers when transferring material. Use spark-proof tools and explosion proof equipment. Avoid contact with eyes, skin, and clothing. Empty containers retain product residue, (liquid and/or vapor), and can be dangerous. 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 to prevent skin exposure. Clothing: Wear appropriate protective 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. 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. Clean up spills immediately, using the appropriate protective equipment. Remove all sources of ignition. Use a spark-proof tool. Provide ventilation. A vapor suppressing foam may be used to reduce vapors.
Disposal code
1
Stability
Stable under normal temperatures and pressures.
Incompatibilities
Strong oxidizing agents.
Decomposition
Carbon monoxide, irritating and toxic fumes and gases, carbon dioxide.

Fire.
Flash Point,°C
30
Autoignition, °C
450
Upper exp. limit, %
6
Lower exp. limit, %
0.8
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. Will burn if involved in a fire. Use water spray to keep fire-exposed containers cool. Containers may explode in the heat of a fire. Extinguishing media: For small fires, use dry chemical, carbon dioxide, water spray or alcohol-resistant foam. For large fires, use water spray, fog, or alcohol-resistant foam. Use water spray to cool fire-exposed containers. Water may be ineffective. Do NOT use straight streams of water.
Fire potential
Moderate fire risk
Hazards
Vapors may form explosive mixtures with air. Vapors may travel to source of ignition and flash back. Most vapors are heavier than air. They will spread along ground and collect in low or confined areas (sewers, basements, tanks). Vapor explosion hazard indoors, outdoors or in sewers.
Combustion products
Vapor may travel considerable distance to a source of ignition and flashback.
Health
1
 
Flammability
3
 
 
Reactivity
0
 

Health.
Poison_Class
4
Exposure effects
Mild central nervous system depression or excitation may occur after ingestion or vapor inhalation. CNS effects can occur secondary to hydrocarbon pneumonitis and hypoxia, or from additives and contaminants (aniline, heavy metals, camphor, or pesticides). Some hydrocarbons are simple asphyxiants (e.G., Methane, ethane, propane gasses) which can produce CNS effects secondary to hypoxia. In a prospective study in Toronto, major congenital malformations were noted in 13 of 125 fetuses of mothers exposed to organic solvents during pregnancy.
   Ingestion
May cause gastrointestinal irritation with nausea, vomiting and diarrhea.
   Inhalation
Causes respiratory tract irritation. Vapors may cause dizziness or suffocation.
   Skin
May cause skin irritation.
   Eyes
May cause eye irritation.

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 immediately.
   Inhalation
Get medical aid immediately. Remove from exposure to fresh air immediately. If not breathing, give artificial respiration. If breathing is difficult, give oxygen.
   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 immediately.

Transport.
UN number
2364
Response guide
Hazard class
3
Packing Group
III
 
USCG CHRIS Code
PBZ
 
32 Aromatic hydrocarbons
HS Code
2902 90 80
 
Std. Transport #
4912674
 
IMO Chemical Code
17
IMO Pollution Category
A
IMO Hazard code
P