The Benzil, with the CAS registry number 134-81-6, is also known as Diphenylethanedione. It belongs to the product categories of Pharmaceutical Intermediates; Intermediates; Functional Materials; Photopolymerization Initiators; Highly Purified Reagents; Other Categories; Zone Refined Products; Bioactive Small Molecules; Building Blocks; C13 to C14; Carbonyl Compounds; Cell Biology; Chemical Synthesis; Ketones; Organic Building Blocks. Its EINECS number is 205-157-0. This chemical's molecular formula is C₁₄H₁₀O₂ and molecular weight is 210.23. What's more, its systematic name is Benzil. Its classification code is Skin / Eye Irritant. Benzil is commonly used as pharmaceutical intermediates, insecticide and curing agent. It is used in organic synthesis. Its main use is as a photoinitiator in polymer chemistry. It is used in the free-radical curing of polymer networks. 

Physical properties of Benzil are: (1)ACD/LogP: 3.38; (2)# of Rule of 5 Violations: 0; (3)ACD/LogD (pH 5.5): 3.38; (4)ACD/LogD (pH 7.4): 3.38; (5)ACD/BCF (pH 5.5): 218.17; (6)ACD/BCF (pH 7.4): 218.17; (7)ACD/KOC (pH 5.5): 1643.31; (8)ACD/KOC (pH 7.4): 1643.31; (9)#H bond acceptors: 2; (10)#H bond donors: 0; (11)#Freely Rotating Bonds: 3; (12)Polar Surface Area: 34.14 Å²; (13)Index of Refraction: 1.594; (14)Molar Refractivity: 61.247 cm³; (15)Molar Volume: 180.379 cm³; (16)Polarizability: 24.28×10^-24cm³; (17)Surface Tension: 47.4 dyne/cm; (18)Density: 1.165 g/cm³; (19)Flash Point: 142.559 °C; (20)Enthalpy of Vaporization: 59.123 kJ/mol; (21)Boiling Point: 347 °C at 760 mmHg; (22)Vapour Pressure: 0 mmHg at 25°C.

Preparation: this chemical can be prepared by cis-1,2-diphenyl-ethene at the temperature of 120 °C. This reaction will need reagent benzeneseleninic anhydride and solvent chlorobenzene with the reaction time of 8 hours. The yield is about 89%.

Uses of Benzil: it can be used to produce 2-hydroxy-1,2-diphenyl-pent-4-en-1-one at the ambient temperature. It will need solvent acetonitrile with the reaction time of 5 hours. The yield is about 94%.

When you are using this chemical, please be cautious about it as the following:
This chemical is irritating to eyes, respiratory system and skin. In case of contact with eyes, you should rinse immediately with plenty of water and seek medical advice. When using it, you need wear suitable protective clothing, gloves and eye/face protection.

You can still convert the following datas into molecular structure:
(1)SMILES: c1ccc(cc1)C(=O)C(=O)c2ccccc2
(2)Std. InChI: InChI=1S/C14H10O2/c15-13(11-7-3-1-4-8-11)14(16)12-9-5-2-6-10-12/h1-10H
(3)Std. InChIKey: WURBFLDFSFBTLW-UHFFFAOYSA-N

The toxicity data is as follows: