Tetrolic acid

Tetrolic acid
Names
	Preferred IUPAC name But-2-ynoic acid
	Other names 2-Butynoic acid; Butynoic acid
Identifiers
CAS Number	590-93-2;
3D model (JSmol)	Interactive image;
ChemSpider	61810 ;
ECHA InfoCard	100.008.815
PubChem CID	68535;
UNII	W3AM9ANZ22 ;
CompTox Dashboard (EPA)	DTXSID4060444 ;
	InChI InChI=1S/C4H4O2/c1-2-3-4(5)6/h1H3,(H,5,6) Key: LUEHNHVFDCZTGL-UHFFFAOYSA-N;
	SMILES CC#CC(=O)O;
Properties
Chemical formula	CH3C≡CCO2H
Molar mass	84.074 g·mol−1
Density	0.9641 g/cm3
Melting point	78 °C (172 °F; 351 K)
Boiling point	203 °C (397 °F; 476 K)
	Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). Infobox references

Tetrolic acid (2-butynoic acid) is a short-chain unsaturated carboxylic acid, described by the formula CH₃−C≡C−CO₂H. Salts and esters of tetrolic acid are known as tetrolates.

^ ^a ^b ^c Haynes, William M., ed. (2011). CRC Handbook of Chemistry and Physics (92nd ed.). Boca Raton, FL: CRC Press. p. 3.88. ISBN 1-4398-5511-0.

[b92-1] Haynes, William M., ed. (2011). CRC Handbook of Chemistry and Physics (92nd ed.). Boca Raton, FL: CRC Press. p. 3.88. ISBN 1-4398-5511-0.

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Names


Preferred IUPAC name But-2-ynoic acid
Other names 2-Butynoic acid Butynoic acid
Identifiers
CAS Number	590-93-2
3D model (JSmol)	Interactive image
ChemSpider	61810^Y
ECHA InfoCard	100.008.815
PubChem CID	68535
UNII	W3AM9ANZ22^Y
CompTox Dashboard (EPA)	DTXSID4060444
InChI InChI=1S/C4H4O2/c1-2-3-4(5)6/h1H3,(H,5,6) Key: LUEHNHVFDCZTGL-UHFFFAOYSA-N
SMILES CC#CC(=O)O
Properties
Chemical formula	CH₃C≡CCO₂H
Molar mass	84.074 g·mol⁻¹
Density	0.9641 g/cm³^[1]
Melting point	78 °C (172 °F; 351 K)^[1]
Boiling point	203 °C (397 °F; 476 K)^[1]
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). Infobox references