5-Isopropylidene-1,3-cyclopentadiene
[CAS# 2175-91-9]

Identification

• Classification: Chemical reagent >> Organic reagent >> Olefins (cyclic and non-cyclic)
• Name: 5-Isopropylidene-1,3-cyclopentadiene
• Synonyms: 5-Isopropylidenecyclopentadiene; 6,6-Dimethylfulvene; 6,6-Dimethylpentafulvene; 6,6'-Dimethylfulvene; Dimethylfulvene; Isopropylidenecyclopentadiene; NSC 132350
• Molecular Formula: C₈H₁₀
• Molecular Weight: 106.17
• CAS Registry Number: 2175-91-9
• EC Number: 629-062-2

Properties

• Solubility: Very slightly soluble (0.13 g/L) (25 ºC), Calc.^*
• Density: 0.881 g/cm³ (20 ºC)^**
• Melting point: 1.4 ºC^***
• Boiling point: 156-158 ºC (760 Torr)^****
• Refractive index: 1.56918 (20 ºC)^**
• Flash point: 24.0±13.0 ºC, Calc.^*

^* Calculated using Advanced Chemistry Development (ACD/Labs) Software V11.02 (©1994-2017 ACD/Labs)

^** Willstatter, Richard; Berichte der Deutschen Chemischen Gesellschaft 1913, V46, P517-27.

^*** Craig, David; Journal of the American Chemical Society 1954, V76, P4573-5.

^**** Day, Jesse H.; Ohio Journal of Science 1952, V52, P335-8.

Safety Data

Hazard Classification

Hazard	Class	Category Code	Hazard Statement
Flammable liquids	Flam. Liq.	3	H226
Aspiration hazard	Asp. Tox.	1	H304