1-Pentene

  • Propylethylene
  • n-Amylene
  • Pent-1-ene
Formula
CH3(CH2)2CH CH2
Structure
Description
Colorless liquid with an odor of gasoline.
Uses
Organic synthesis, blending agent for high octane motor fuel, pesticide formulations.

Registry Numbers and Inventories.
CAS
109-67-1
EC (EINECS/ELINCS)
203-694-5
R 12 65
S 7/9 16 23 29 33 62
UN (DOT)
1108
Merck
12,7262
Beilstein/Gmelin
1731629
Beilstein Reference
4-01-00-00801
Canada DSL/NDSL
DSL
US TSCA
Listed
Austrailia AICS
Listed
New Zealand
Listed
Japan ENCS (MITI)
Listed
Korea ECL
Listed

Properties.
Formula
C5H10
Formula mass
70.13
Melting point, °C
-165.0
Boiling point, °C
30
Vapor pressure, mmHg
637 (25 C)
Vapor density (air=1)
2.42
Odor Threshold Odor threshold 0.19 ppm
Critical temperature
201
Critical pressure
35.0
Density
0.641 g/cm3 (20 C)
Solubility in water
Insoluble
Viscosity
0.202 cst at 20C
Refractive index
1.3714 (20 C)
Partition coefficient, pKow
2.90
Thermal expansion
0.0016/K
Heat of vaporization
26.1 kJ/mol
Heat of combustion
-3378 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. Store in a cool, dry, well-ventilated area away from incompatible substances. Flammables-area. Refrigerator (approx 4 C).
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 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
Absorb spill with inert material, (e.g., dry sand or earth), then place into a chemical waste container. Use water spray to dilute spill to a non-flammable mixture. Avoid runoff into storm sewers and ditches which lead to waterways. Clean up spills immediately, using the appropriate protective equipment. Remove all sources of ignition. Use a spark-proof tool. Provide ventilation. Use water spray to reduce vapors or divert vapor cloud drift.
Stability
Stable under normal shipping and handling conditions.
Incompatibilities
Strong oxidizing agents.
Decomposition
Carbon monoxide, irritating and toxic fumes and gases, carbon dioxide.

Fire.
Flash Point,°C
-29
Autoignition, °C
273
Upper exp. limit, %
8.7
Lower exp. limit, %
1.5
Fire fighting
Fire Extinguishing Agents Not to Be Used: Water may be ineffective.Fire Extinguishing Agents: Foam, dry chemical, or carbon dioxide. Stop flow of vapor.
Fire potential
Very flammable, combustion imminent.
Hazards
Containers may explode in fire.
Combustion products
Fire may produce irritating, corrosive and/or toxic gases.
Health
1
 
Flammability
4
 
 
Reactivity
1
 

Health.
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
Aspiration hazard. May cause irritation of the digestive tract. Aspiration of material into the lungs may cause chemical pneumonitis, which may be fatal. Ingestion of large amounts may cause CNS depression.
   Inhalation
Inhalation of high concentrations may cause central nervous system effects characterized by headache, dizziness, unconsciousness and coma. May cause respiratory tract irritation. Vapors may cause dizziness or suffocation. Vapors may cause dizziness, nausea, itching, burning, and swelling of the eyes.
   Skin
May cause skin irritation.
   Eyes
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. Possible aspiration hazard. 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. DO NOT use mouth-to-mouth respiration.
   Skin
Get medical aid if irritation develops or persists. Wash clothing before reuse. Flush skin with plenty of soap and water.
   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
1108
Response guide
Hazard class
3
Packing Group
I
 
USCG CHRIS Code
PTE
 
IMO Chemical Code
17
IMO Pollution Category
C
IMO Hazard code
P