Cyclobutane
[CAS# 287-23-0]

Identification

• Name: Cyclobutane
• Synonyms: Tetramethylene
• Molecular Formula: C₄H₈
• Molecular Weight: 56.11
• CAS Registry Number: 287-23-0
• EC Number: 206-014-5

Properties

• Solubility: Very slightly soluble (0.54 g/L) (25 ºC), Calc.^*
• Density: 0.718 g/cm³ (5 ºC)^**
• Melting point: -50 ºC^***
• Boiling point: 125-126 ºC^****
• Refractive index: 1.3625 (589.3 nm 290 ºC)^*****
• Flash point: -66.6±11.7 ºC, Calc.^*

^* Calculated using Advanced Chemistry Development (ACD/Labs) Software V11.02 (©1994-2017 ACD/Labs)

^** Willstatter, Richard; Berichte der Deutschen Chemischen Gesellschaft 1908, V40, P3979-99.

^*** de Forcrand, R.; Compt. rend. 1921, V172, P31-4.

^**** Kotz, Arthur; Journal fuer Praktische Chemie (Leipzig) 1921, V103, P227-40.

^***** "Hazardous Substances Data Bank" data were obtained from the National Library of Medicine (US)

Safety Data

Hazard Classification

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

• Hazardous Chemical?: Yes