(z)-2-buten

Name	CIS-2-BUTENE
Synonyms	(Z)-2-C4H8 (z)-2-buten CIS-2-BUTENE (Z)-2-Butene 2-Butene,(Z)- (2Z)-2-Butene beta-cis-butylene
CAS	590-18-1
EINECS	209-673-7

Molecular Formula	C4H8
Molar Mass	56.11
Density	0,62 g/cm3
Melting Point	−139°C(lit.)
Boling Point	3.7°C(lit.)
Flash Point	−99°F
Vapor Presure	1414 mm Hg ( 21 °C)
Vapor Density	2 (vs air)
Merck	1520
BRN	1361341
Stability	Stable, but prone to polymerization in the presence of suitable catalysts. Extremely flammable. Readily forms explosive mixtures with air. Can lead to flash fires. Incompatible with strong oxide
Explosive Limit	9.7%
Refractive Index	1.3842
Physical and Chemical Properties	Colorless gas. Melting Point -139.3 °c, boiling point 3.72 °c, relative density 0.6213(20/4 °c), refractive index 1.3931(-25 °c). Soluble in organic solvents, insoluble in water.

Hazard Symbols	F+ - Highly flammable
Risk Codes	12 - Extremely Flammable
Safety Description	S9 - Keep container in a well-ventilated place. S16 - Keep away from sources of ignition. S33 - Take precautionary measures against static discharges.
UN IDs	UN 1012 2.1
WGK Germany	3
Hazard Class	2.1

EPA chemical substance information	information provided by: ofmpeb.epa.gov (external link)
spontaneous combustion temperature	615 ° F.
DOT Classification	2.1 (Flammable gas)
toxic substance data	information provided by: pubchem.ncbi.nlm.nih.gov (external link)

Last Update：2024-04-10 22:29:15

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