Benzil

Benzil
Names
	Preferred IUPAC name Diphenylethanedione
	Systematic IUPAC name 1,2-Diphenylethane-1,2-dione
	Other names Diphenylethane-1,2-dione; Benzil; Dibenzoyl; Bibenzoyl; Diphenylglyoxal
Identifiers
CAS Number	134-81-6 ;
3D model (JSmol)	Interactive image; Interactive image;
Beilstein Reference	608047
ChEBI	CHEBI:51507 ;
ChEMBL	ChEMBL189886 ;
ChemSpider	8329 ;
ECHA InfoCard	100.004.689
EC Number	205-157-0;
PubChem CID	8651;
RTECS number	DD1925000;
UNII	S85X61172J ;
CompTox Dashboard (EPA)	DTXSID3044380 ;
	InChI InChI=1S/C14H10O2/c15-13(11-7-3-1-4-8-11)14(16)12-9-5-2-6-10-12/h1-10H Key: WURBFLDFSFBTLW-UHFFFAOYSA-N ; InChI=1/C14H10O2/c15-13(11-7-3-1-4-8-11)14(16)12-9-5-2-6-10-12/h1-10H Key: WURBFLDFSFBTLW-UHFFFAOYAZ;
	SMILES O=C(C(=O)c1ccccc1)c2ccccc2; c1ccccc1C(=O)C(=O)c2ccccc2;
Properties
Chemical formula	C14H10O2
Molar mass	210.232 g·mol−1
Appearance	yellow crystalline powder
Density	1.23 g/cm3, solid (1.255 g/cm3, x-ray)
Melting point	94.0 to 96.0 °C; 201.2 to 204.8 °F; 367.1 to 369.2 K
Boiling point	346.0 to 348.0 °C; 654.8 to 658.4 °F; 619.1 to 621.1 K
Solubility in water	insoluble
Solubility in ethanol	soluble
Solubility in diethyl ether	soluble
Solubility in benzene	soluble
Magnetic susceptibility (χ)	-118.6·10−6 cm3/mol
Structure
Crystal structure	P31,221
Dipole moment	3.8 D
Hazards
	Occupational safety and health (OHS/OSH):
Main hazards	Irritant
	GHS labelling:
Pictograms
Signal word	Warning
Hazard statements	H315, H319, H335
Precautionary statements	P261, P264, P271, P280, P302+P352, P304+P340, P305+P351+P338, P312, P321, P332+P313, P337+P313, P362, P403+P233, P405, P501
NFPA 704 (fire diamond)	2 1 0
	Lethal dose or concentration (LD, LC):
LD50 (median dose)	>3 g/kg (mouse, oral)
Related compounds
Related diketones	diacetyl
Related compounds	benzophenone; glyoxal; bibenzil
	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

Benzil (i.e. Bz₂, systematically known as 1,2-diphenylethane-1,2-dione) is the organic compound with the formula (C₆H₅CO)₂, generally abbreviated (PhCO)₂. This yellow solid is one of the most common diketones. Its main use is as a photoinitiator in polymer chemistry.

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