Vinylacetylene information

Vinylacetylene
Names
	Preferred IUPAC name But-1-en-3-yne
	Other names Butenyne, normal isomer; 3-Butene-1-yne, Vinyl acetylene
Identifiers
CAS Number	689-97-4 ;
3D model (JSmol)	Interactive image;
ChEBI	CHEBI:48088 ;
ChemSpider	12197 ;
ECHA InfoCard	100.010.650
PubChem CID	12720;
UNII	VW72FM10OQ ;
CompTox Dashboard (EPA)	DTXSID4029199 ;
	InChI InChI=1S/C4H4/c1-3-4-2/h1,4H,2H2 Key: WFYPICNXBKQZGB-UHFFFAOYSA-N ; InChI=1/C4H4/c1-3-4-2/h1,4H,2H2 Key: WFYPICNXBKQZGB-UHFFFAOYAE;
	SMILES C#CC=C;
Properties
Chemical formula	C4H4
Molar mass	52.07456 g/mol
Appearance	colourless gas
Boiling point	0 to 6 °C (32 to 43 °F; 273 to 279 K)
Solubility in water	low
Hazards
	Occupational safety and health (OHS/OSH):
Main hazards	flammable
NFPA 704 (fire diamond)	2 4 3 W
Flash point	< −5 °C (23 °F; 268 K)
	Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). verify (what is ?) Infobox references

Vinylacetylene is the organic compound with the formula C₄H₄. The colourless gas was once used in the polymer industry. It is composed of both alkyne and alkene groups and is the simplest enyne.

Vinylacetylene is extremely dangerous because in high enough concentrations (typically > 30 mole percent, but pressure dependent) it can auto-detonate (explode without air being present) especially at elevated pressures, such as those seen in chemical plants processing C4 hydrocarbons.^[2] An example of such an explosion occurred at a Union Carbide plant in Texas City in 1969.^[3]

^ "New Environment Inc. - NFPA Chemicals".
^ Ritzert and Berthol, Chem Ing Tech 45(3), 131-136, Feb 1973, reproduced in Viduari, J Chem Eng Data 20(3), 328-333, 1975.
^ Carver, Chemical Process Hazards V, Paper F

[1] "New Environment Inc. - NFPA Chemicals".

[2] Ritzert and Berthol, Chem Ing Tech 45(3), 131-136, Feb 1973, reproduced in Viduari, J Chem Eng Data 20(3), 328-333, 1975.

[3] Carver, Chemical Process Hazards V, Paper F

Vinylacetylene information

and 9 Related for: Vinylacetylene information

Vinylacetylene

C4H4

Enyne

Glossary of chemical formulae

Acetylene

Chloroprene

Acetylide

Transition metal alkyne complex

August 1965

Names



Preferred IUPAC name But-1-en-3-yne
Other names Butenyne, normal isomer 3-Butene-1-yne, Vinyl acetylene
Identifiers
CAS Number	689-97-4^Y
3D model (JSmol)	Interactive image
ChEBI	CHEBI:48088^Y
ChemSpider	12197^Y
ECHA InfoCard	100.010.650
PubChem CID	12720
UNII	VW72FM10OQ^Y
CompTox Dashboard (EPA)	DTXSID4029199
InChI InChI=1S/C4H4/c1-3-4-2/h1,4H,2H2^Y Key: WFYPICNXBKQZGB-UHFFFAOYSA-N^Y InChI=1/C4H4/c1-3-4-2/h1,4H,2H2 Key: WFYPICNXBKQZGB-UHFFFAOYAE
SMILES C#CC=C
Properties
Chemical formula	C₄H₄
Molar mass	52.07456 g/mol
Appearance	colourless gas
Boiling point	0 to 6 °C (32 to 43 °F; 273 to 279 K)
Solubility in water	low
Hazards
Occupational safety and health (OHS/OSH):
Main hazards	flammable
NFPA 704 (fire diamond)	2 4 3 W
Flash point	< −5 °C (23 °F; 268 K)
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). Y verify (what is ^YN ?) Infobox references