1-Butyne
[CAS# 107-00-6]

Identification

• Name: 1-Butyne
• Molecular Formula: C₄H₆
• Molecular Weight: 54.09
• CAS Registry Number: 107-00-6
• EC Number: 203-451-3

Properties

• Solubility: Slightly soluble (1.1 g/L) (25 ºC), Calc.^*
• Density: 0.668 g/cm³ (0 ºC)^**
• Melting point: 164-166 ºC (ethyl acetate )^***
• Boiling point: 18.5 ºC^**
• Refractive index: 1.3962 (589.3 nm)^**
• Flash point: -66.0±1.4 ºC, Calc.^*

^* Calculated using Advanced Chemistry Development (ACD/Labs) Software V11.02 (©1994-2016 ACD/Labs)

^** Dupont, Georges; Compt. rend. 1909, V148, P1522-4.

^*** Orr, J. C.; Steroids 1964, V3(1), P1-12.

Safety Data

• Hazard Symbols: F+
• Risk Codes: R12
• Safety Description: S16

Hazard Classification

Hazard	Class	Category Code	Hazard Statement
Flammable gases	Flam. Gas	1	H220
Gases under pressure (liquid)	Press. Gas (Liq.)		H280
Gases under pressure (compressed)	Press. Gas (Comp.)		H280

• Transport Information: UN 2452 2.1