Dibutyl maleate

Maleic acid dibutyl ester
Names
	Preferred IUPAC name Dibutyl (2Z)-but-2-enedioate
	Other names Maleic acid dibutyl ester; DBM;
Identifiers
CAS Number	105-76-0;
3D model (JSmol)	Interactive image;
ChEMBL	ChEMBL1466826;
ChemSpider	4436356 ;
ECHA InfoCard	100.003.027
EC Number	203-328-4;
MeSH	maleate dibutyl maleate
PubChem CID	5271569;
UNII	4X371TMK9K;
CompTox Dashboard (EPA)	DTXSID3026724 ;
	InChI InChI=1S/C12H20O4/c1-3-5-9-15-11(13)7-8-12(14)16-10-6-4-2/h7-8H,3-6,9-10H2,1-2H3/b8-7- Key: JBSLOWBPDRZSMB-FPLPWBNLSA-N;
	SMILES CCCCOC(=O)/C=C\C(=O)OCCCC;
Properties
Chemical formula	C12H20O4
Molar mass	228.288 g·mol−1
Appearance	Colorless to yellowish liquid with a characteristic odor
Density	0.99 g·cm−3
Melting point	−85 °C (−121 °F; 188 K)
Boiling point	280 °C (536 °F; 553 K)
Solubility in water	Very hardly soluble (0.17 g·l−1 at 20 °C)
Vapor pressure	0.0027 hPa (20 °C)
Refractive index (nD)	1.445 (20 °C)
Hazards
	GHS labelling:
Pictograms
Hazard statements	H317, H373, H411
Precautionary statements	P273, P280, P302+P352, P314
Flash point	141 °C (286 °F; 414 K)
Autoignition; temperature	265 °C (509 °F; 538 K)
Explosive limits	Lower limit: 0.5 vol-%; Upper limit: 3.4 vol-%;
	Lethal dose or concentration (LD, LC):
LD50 (median dose)	3700 mg·kg−1 (rat, oral); 10000 mg·kg−1 (rabbit, dermal);
	Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). Infobox references

Dibutyl maleate is an organic compound with the formula (CHCO₂Bu)₂ (Bu = butyl). It is the diester of the unsaturated dicarboxylic acid maleic acid. It is a colorless oily liquid, although impure samples can appear yellow.