Pentene

  • Amylene
  • Pentylene
  • n-Pentene
  • n-Amylene
Formula
C5H10
Structure
Description
Liq @ room temp.
Uses
Chemical intermediate.

Registry Numbers and Inventories.
CAS
25377-72-4
EC (EINECS/ELINCS)
246-916-6
UN (DOT)
1108
Beilstein/Gmelin
3715610
Beilstein Reference
1-22-00-00649
Canada DSL/NDSL
DSL
US TSCA
Listed
Austrailia AICS
Listed
Japan ENCS (MITI)
Listed
Korea ECL
Listed

Properties.
Formula
C5H10
Formula mass
70.13
Melting point, °C
-129
Boiling point, °C
37
Vapor pressure, mmHg
61
Critical temperature
214
Critical pressure
36.0
Density
0.650 g/cm3
Solubility in water
Insoluble
Viscosity
0.202 sq mm/s @ 20C
Partition coefficient, pKow
2.32

Hazards and Protection.
Storage
Store in a cool, dry place. Keep container closed when not in use. Refrigerator/flammables.
Handling
Wash thoroughly after handling. Remove contaminated clothing and wash before reuse. Avoid contact with eyes, skin, and clothing. Avoid ingestion and inhalation.
Protection
Wear appropriate protective gloves, clothing and goggles.
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.
Small spills/leaks
Clean up spills immediately, using the appropriate protective equipment.
Stability
Stable under normal temperatures and pressures.
Incompatibilities
Reacts with heat, flame, and oxidizing materials.
Decomposition
Irritating and toxic fumes and gases.

Fire.
Flash Point,°C
-44
Fire fighting
To fight fire, use foam, carbon dioxide, dry chemical.
Fire potential
Very flammable.
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
Fire may produce irritating, corrosive and/or toxic gases.
Health
0
 
Flammability
4
 

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
Nausea, vomiting, diarrhea, and abdominal pain may occur following ingestion.
   Inhalation
Coughing, choking, tachypnea, dyspnea, cyanosis, rales, hemoptysis, pulmonary edema, pneumatoceles, lipoid pneumonia, or respiratory arrest may develop following ingestion and aspiration.
   Skin
See Inhalation.
   Eyes
See Inhalation.

First aid
 
   Ingestion
If victim is conscious and alert, give 2-4 cupfuls of milk or water. 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. Remove contaminated clothing and shoes.
   Eyes
Irrigate exposed eyes with copious amounts of tepid water for at least 15 minutes. If irritation, pain, swelling, lacrimation, or photophobia persist, the patient should be seen in a health care facility.

Transport.
UN number
1108
Response guide
Hazard class
3
Packing Group
I
 
USCG CHRIS Code
PTX
 
IMO Chemical Code
17
IMO Pollution Category
C
IMO Hazard code
P