4-Octyne
[CAS# 1942-45-6]

Identification

• Classification: Chemical reagent >> Organic reagent >> Alkyne
• Name: 4-Octyne
• Synonyms: 1,2-Dipropylacetylene; Dipropylacetylene; Dipropylethyne
• Molecular Formula: C₈H₁₄
• Molecular Weight: 110.20
• CAS Registry Number: 1942-45-6
• EC Number: 217-730-2

Properties

• Solubility: Practically insoluble (0.03 g/L) (25 ºC), Calc.^*
• Density: 0.765±0.06 g/cm³ (20 ºC 760 Torr), Calc.^*
• Melting point: -101 ºC^**
• Boiling point: 131.8-132.1 ºC (747 Torr)^***
• Refractive index: 1.4248-1.4249 (589.3 nm 20 ºC)^****
• Flash point: 29.4±0.0 ºC, Calc.^*

^* Calculated using Advanced Chemistry Development (ACD/Labs) Software V11.02 (©1994-2014 ACD/Labs)

^** "PhysProp" data were obtained from Syracuse Research Corporation of Syracuse, New York (US)

^*** Campbell, Kenneth N.; Journal of the American Chemical Society 1941, V63, P216-18.

^**** Miller, Harold N.; Journal of Organic Chemistry 1954, V19, P1882-8.

Safety Data

• Hazard Symbols: Xn
• Risk Codes: R10;R36/37/38;R65
• Safety Description: S26;S62

Hazard Classification

Hazard	Class	Category Code	Hazard Statement
Flammable liquids	Flam. Liq.	3	H226
Aspiration hazard	Asp. Tox.	1	H304
Skin irritation	Skin Irrit.	2	H315
Specific target organ toxicity - single exposure	STOT SE	3	H335
Eye irritation	Eye Irrit.	2	H319

• Transport Information: UN 3295C 3 / PGIII