1,2-Butylene carbonate

1,2-Butylene carbonate is an organic compound with formula C
₅H
₈O
₃, or (H₅C₂)(C₂H₃)(CO₃). It is a double ester with the carbonate functional group bonded to both free ends of the 1,2-butylene group. It is also a heterocyclic compound with a five-membered ring, and can be seen as a derivative of dioxolane, specifically 4-ethyl-1,3-dioxolan-2-one.

Quick facts Names, Identifiers ...

1,2-Butylene carbonate

Names
Preferred IUPAC name 4-Ethyl-1,3-dioxolan-2-one
Other names 1,2-Butanediol carbonate 2-Oxo-4-ethyl-1,3-dioxolane
Identifiers
CAS Number	4437-85-8 Y
3D model (JSmol)	Interactive image Interactive image
ChemSpider	96547 Y
ECHA InfoCard	100.216.269
PubChem CID	107282
UNII	I64G2S50OV Y
CompTox Dashboard (EPA)	DTXSID9040342
InChI InChI=1S/C5H8O3/c1-2-4-3-7-5(6)8-4/h4H,2-3H2,1H3 Y Key: ZZXUZKXVROWEIF-UHFFFAOYSA-N Y InChI=1/C5H8O3/c1-2-4-3-7-5(6)8-4/h4H,2-3H2,1H3 Key: ZZXUZKXVROWEIF-UHFFFAOYAB
SMILES CCC1COC(=O)O1 O=C1OCC(O1)CC
Properties
Chemical formula	C5H8O3
Molar mass	116.116 g·mol−1
Except where otherwise noted, data are given for materials in their standard state (at 25 Â°C [77 Â°F], 100 kPa). N verify (what is YN ?) Infobox references

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1,2-Butylene carbonate is a polar aprotic solvent, which has been considered for electric battery applications (as a cheaper alternative to ionic liquids) and many other uses.^[1]