(E)-2-Pentene
[CAS# 646-04-8]

Identification

• Classification: Organic raw materials >> Hydrocarbon compounds and their derivatives >> Acyclic hydrocarbon
• Name: (E)-2-Pentene
• Synonyms: 2,5-Dihydroxyphenylacetic acid; Alcapton; Homogentisic acid; Homogentisinic acid; NSC 88940
• Molecular Formula: C₅H₁₀
• Molecular Weight: 70.13
• CAS Registry Number: 646-04-8
• EC Number: 211-461-4

Properties

• Solubility: Very slightly soluble (0.11 g/L) (25 ºC), Calc.^*
• Density: 0.65551 g/cm³ (15 ºC)^**
• Melting point: -138 ºC^**
• Boiling point: 36.39 ºC (760 Torr)^**
• Refractive index: 1.3899 (589.3 nm 5.3 ºC)^**
• Flash point: -45.6±0.0 ºC, Calc.^*

^* Calculated using Advanced Chemistry Development (ACD/Labs) Software V11.02 (©1994-2018 ACD/Labs)

^** Norris, J. F.; Journal of the American Chemical Society 1927, V49, P2624-40.

Safety Data

Hazard Classification

Hazard	Class	Category Code	Hazard Statement
Flammable liquids	Flam. Liq.	1	H224
Aspiration hazard	Asp. Tox.	1	H304
Skin irritation	Skin Irrit.	2	H315
Eye irritation	Eye Irrit.	2	H319
Specific target organ toxicity - single exposure	STOT SE	3	H335
Acute toxicity	Acute Tox.	4	H332
Acute toxicity	Acute Tox.	4	H302
Flammable liquids	Flam. Liq.	2	H225