0.6834 at 68 °F (average value for cis and trans isomers) (USCG, 1999) - Less dense than water; will float
0.6760 @ 20 °C/4 °C
0.6710 g/ml @ 25 °C
0.7 g/cm³
Relative density of the vapour/air-mixture at 20 °C (air = 1): 1.7
Physical Description
1,3-pentadiene appears as a clear colorless liquid with an acrid odor. 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.
Liquid
Colorless liquid; [Hawley]
Colorless liquid; [HSDB] Unpleasant odor; [CHEMINFO]
COLOURLESS LIQUID.
Appearance
Colorless liquid
State
Liquid
Storage Conditions
Separated from strong oxidants. Fireproof. Store in an area without drain or sewer access. Ventilation along the floor.
Computed Properties
Structural Parameters
Heavy atom count
5
Fraction Csp3
0.2
Rotatable bonds
1
Molar refractivity
25.01
TPSA
0.0000
LogP / Solubility
WLOGP
1.75
MLOGP
1.52
XLogP3
2.4
Consensus LogP
1.89
Log S (ESOL)
-1.3
Class (ESOL)
Soluble
Log S (Ali)
-1.38
Class (Ali)
Soluble
Log S (SILICOS-IT)
-1.67
Class (SILICOS-IT)
Soluble
ADME
GI absorption
High
BBB permeant
Yes
P-gp substrate
No
CYP1A2 inhibitor
No
CYP2C19 inhibitor
No
CYP2C9 inhibitor
No
CYP2D6 inhibitor
No
CYP3A4 inhibitor
No
Log Kp (skin permeation)
-1.89
Drug-likeness / Medicinal Chemistry
Lipinski
Yes
Ghose
No
Veber
Yes
Egan
Yes
Muegge
No
Bioavailability score
0.55
Brenk alerts
1
Leadlikeness
No
Synthetic Accessibility
1
Safety & Transport
Pictogram(s)
Flammable
Health Hazard
Irritant
Signal
Danger
GHS Hazard Statements
H225 (94.9%): Highly Flammable liquid and vapor [Danger Flammable liquids]
H304 (70.7%): May be fatal if swallowed and enters airways [Danger Aspiration hazard]
H225 (100%): Highly Flammable liquid and vapor [Danger Flammable liquids]
H304 (90.3%): May be fatal if swallowed and enters airways [Danger Aspiration hazard]
H315 (90.3%): Causes skin irritation [Warning Skin corrosion/irritation]