2-Pentynoic acid ethyl ester
[CAS# 55314-57-3]

Identification

• Name: 2-Pentynoic acid ethyl ester
• Synonyms: Ethyl 2-pentynoate; NSC 190964
• Molecular Formula: C₇H₁₀O₂
• Molecular Weight: 126.15
• CAS Registry Number: 55314-57-3
• EC Number: 259-588-4

Properties

• Solubility: Slightly soluble (1.5 g/L) (25 °C), Calc.^*
• Density: 0.9540 g/cm³ (20 °C)^**
• Boiling point: 178 °C (760 Torr)^**
• Refractive index: 1.4410 (20 °C)^**
• Flash point: 65.4±6.7 °C, Calc.^*

^* Calculated using Advanced Chemistry Development (ACD/Labs) Software V11.02 (©1994-2015 ACD/Labs)

^** Bloshchitsa, F. A.

Safety Data

Hazard Classification

Hazard	Class	Category Code	Hazard Statement
Flammable liquids	Flam. Liq.	3	H226
Respiratory sensitization	Resp. Sens.	1	H334
Serious eye damage	Eye Dam.	1	H318
Skin irritation	Skin Irrit.	2	H315
Eye irritation	Eye Irrit.	2	H319
Specific target organ toxicity - single exposure	STOT SE	3	H335