1-Cyclopentene-1-carboxaldehyde
[CAS# 6140-65-4]

Identification

• Name: 1-Cyclopentene-1-carboxaldehyde
• Synonyms: 1-Cyclopentenecarboxaldehyde; 1-Cyclopentenyl aldehyde; 1-Formyl-1-cyclopentene; 1-Formylcyclopentene
• Molecular Formula: C₆H₈O
• Molecular Weight: 96.13
• CAS Registry Number: 6140-65-4
• EC Number: 848-540-3

Properties

• Solubility: Slightly soluble (8 g/L) (25 ºC), Calc.^*
• Density: 1.110±0.06 g/cm³ (20 ºC 760 Torr), Calc.^*
• Melting point: 75-77 ºC^**
• Boiling point: 146-149 ºC^***
• Refractive index: 1.4897 (589.3 nm 17 ºC)^****
• Flash point: 47.0±16.5 ºC, Calc.^*

^* Calculated using Advanced Chemistry Development (ACD/Labs) Software V11.02 (©1994-2013 ACD/Labs)

^** Stork, Gilbert; Journal of the American Chemical Society 1953, V75, P384-92.

^*** Treibs, Wilhelm; Chemische Berichte 1959, V92, P1559-63.

^**** Bergmann, Ernst D.; Journal of the American Chemical Society 1959, V81, P221-5.

Safety Data

Hazard Classification

Hazard	Class	Category Code	Hazard Statement
Eye irritation	Eye Irrit.	2A	H319
Specific target organ toxicity - single exposure	STOT SE	3	H335
Skin irritation	Skin Irrit.	2	H315
Flammable liquids	Flam. Liq.	3	H226