TRANS-1,3-PENTADIENE

CAS NO.：504-60-9
Empirical Formula: C5H8
Molecular Weight: 68.12
MDL number: MFCD00009295
EINECS: 207-995-2
SAFETY DATA SHEET (SDS)
Update Date: 2023-11-28 16:31:44

What is TRANS-1,3-PENTADIENE?

Chemical properties

colourless liquid

Definition

ChEBI: (E)-1,3-pentadiene is an alkadiene consisting of pentane with the two double bonds located at positions 1 and 3.

General Description

A clear colorless liquid with an acrid odor. Flash point of -20°F. Boiling point 5°F. A dangerous fire risk. Vapors are irritating to the eyes and respiratory system. Subject to polymerization if heated or contaminated. If the polymerization takes place inside a container, the container may violently rupture. Insoluble in water. Used to make intermediates and polymers.

Air & Water Reactions

Highly flammable. Insoluble in water.

Reactivity Profile

TRANS-1,3-PENTADIENE may react vigorously with strong oxidizing agents. May react exothermically with reducing agents to release hydrogen gas. In the presence of various catalysts (such as acids) or initiators, may undergo exothermic addition polymerization reactions. May undergo autoxidation upon exposure to the air to form explosive peroxides. Violent explosions at low temperatures in ammonia synthesis units have been traced to the addition products of dienes and nitrogen dioxide [Bretherick, 5th Ed., 1995].

Health Hazard

Vapors may cause dizziness or suffocation; contact may irritate skin and eyes.

Properties of TRANS-1,3-PENTADIENE

Melting point:	−87 °C(lit.)
Boiling point:	42 °C(lit.)
Density	0.683 g/mL at 25 °C(lit.)
vapor density	2.4 (vs air)
vapor pressure	6.56 psi ( 20 °C)
refractive index	n20/D 1.433(lit.)
Flash point:	<−30 °F
storage temp.	Refrigerator
Dielectric constant	2.3（25℃）
Stability:	Stable. Incompatible with strong oxidizing agents. Very flammable - note low flash point and low boiling point.
CAS DataBase Reference	504-60-9(CAS DataBase Reference)
EPA Substance Registry System	1,3-Pentadiene (504-60-9)