Dibenzylideneacetone

Dibenzylideneacetone
Names
	Preferred IUPAC name (1E,4E)-1,5-Diphenylpenta-1,4-dien-3-one
	Other names Dibenzalacetone
Identifiers
CAS Number	538-58-9 non-specific ; 35225-79-7 (E,E) ; 115587-57-0 (E,Z) ; 58321-78-1 (Z,Z) ;
3D model (JSmol)	undefined: Interactive image; (E,E): Interactive image; (E,Z): Interactive image; (Z,Z): Interactive image;
ChEMBL	ChEMBL17201 (E,E) ;
ChemSpider	86113 undefined ; 555548 (E,E) ; 1266463 (E,Z) ; 1266462 (Z,Z) ;
ECHA InfoCard	100.126.050
PubChem CID	95417 undefined; 640180 (E,E); 1549622 (E,Z); 1549621 (Z,Z);
UNII	9QXO7BCY9L (E,E) ; N4SH2VDI6Y (E,Z) ; 5L4OCE3E5U (Z,Z) ;
	InChI undefined: InChI=1S/C17H14O/c18-17(13-11-15-7-3-1-4-8-15)14-12-16-9-5-2-6-10-16/h1-14H Key: WMKGGPCROCCUDY-UHFFFAOYSA-N; (E,E): InChI=1S/C17H14O/c18-17(13-11-15-7-3-1-4-8-15)14-12-16-9-5-2-6-10-16/h1-14H/b13-11+,14-12+ Key: WMKGGPCROCCUDY-PHEQNACWSA-N; (E,Z): InChI=1S/C17H14O/c18-17(13-11-15-7-3-1-4-8-15)14-12-16-9-5-2-6-10-16/h1-14H/b13-11-,14-12+ Key: WMKGGPCROCCUDY-HEEUSZRZSA-N; (Z,Z): InChI=1S/C17H14O/c18-17(13-11-15-7-3-1-4-8-15)14-12-16-9-5-2-6-10-16/h1-14H/b13-11-,14-12- Key: WMKGGPCROCCUDY-XSYHWHKQSA-N;
	SMILES undefined: O=C(C=Cc1ccccc1)C=Cc2ccccc2; (E,E): O=C(/C=C/c1ccccc1)/C=C/c2ccccc2; (E,Z): O=C(\C=C\c1ccccc1)/C=C\c2ccccc2; (Z,Z): O=C(/C=C\c1ccccc1)/C=C\c2ccccc2;
Properties
Chemical formula	C17H14O
Molar mass	234.29 g/mol
Appearance	Yellow solid
Melting point	110–111 °C (230–232 °F; 383–384 K) (trans, trans isomer); 60 °C (140 °F; 333 K) (cis, trans isomer);
Boiling point	130 °C (266 °F; 403 K) (cis, cis isomer)
Solubility in water	Insoluble
Solubility in other solvents	Soluble in acetone and chloroform, slightly soluble in ethanol.
Hazards
	Occupational safety and health (OHS/OSH):
Main hazards	Irritant
	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

Dibenzylideneacetone or dibenzalacetone, often abbreviated dba, is an organic compound with the formula C₁₇H₁₄O. It is a pale-yellow solid insoluble in water, but soluble in ethanol.

It was first prepared in 1881 by the German chemist Rainer Ludwig Claisen (1851–1930) and the Swiss chemist Charles-Claude-Alexandre Claparède (14 April 1858 – 1 November 1913).

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