TRANS-1,3-PENTADIENE Chemical Properties

Melting point:

-87 °C (lit.)

Boiling point:

42 °C (lit.)

Density 

0.678 g/mL at 20 °C 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. 

2-8°C

form 

clear liquid

color 

Colorless to Almost colorless

Specific Gravity

0.6764

BRN 

1523659

Dielectric constant

2.3199999999999998

Stability:

Stable. Highly flammable. Readily forms explosive mixtures with air. Note low flash point. Incompatible with strong oxidizing agents.

CAS DataBase Reference

2004-70-8(CAS DataBase Reference)

EPA Substance Registry System

1,3-Pentadiene, (3E)- (2004-70-8)

Safety Information

Hazard Codes 

F,Xn

Risk Statements 

11-65-36/37/38

Safety Statements 

16-23-26-36-62

RIDADR 

UN 3295 3/PG 2

WGK Germany 

3

RTECS 

RZ2465000

HS Code 

2901.29.5000

HazardClass 

3.1

PackingGroup 

I

Hazardous Substances Data

2004-70-8(Hazardous Substances Data)

Toxicity

LD50 ivn-mus: 18 mg/kg CSLNX* NX#04179

MSDS

• Language:English Provider:SigmaAldrich

TRANS-1,3-PENTADIENE Usage And Synthesis

Definition

ChEBI: An alkadiene consisting of pentane with the two double bonds located at positions 1 and 3.

General Description

Trans-1,3-Pentadiene spectra is recorded in the 5000-17500 cm(-1) region with conventional and intracavity laser photoacoustic spectroscopy. It can be determined by the spectrophotometric method based on the Diels-Alder reaction. In this reaction, cisoid 1,3-dienes and tetracyanoethylene (TCNE) react with an aromatic-TCNE pi-complex.

Safety Profile

Poison by intravenous route. A very dangerous fire and explosion hazard when exposed to heat or flame; can react vigorously with oxidizing materials. When heated to decomposition it emits acrid smoke and irritating fumes.

Purification Methods

Distil the diene from NaBH4. Purify it also by preparative gas chromatography. [Reimann et al. J Am Chem Soc 108 5527 1986, Beilstein 1 IV 994.]

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