The physical properties of alpha,alpha-Dichlorodiphenylmethane include: (1)H bond acceptors: 0; (2)H bond donors: 0; (3)Freely Rotating Bonds: 2; (4)Index of Refraction: 1.588; (5)Molar Refractivity: 64.83 cm³; (6)Molar Volume: 192.4 cm³; (7)Surface Tension: 41 dyne/cm; (8)Enthalpy of Vaporization: 52.36 kJ/mol; (9)Vapour Pressure: 0.00152 mmHg at 25°C; (10)Refractive index: n20/D 1.605(lit.). This prodcut could react violently with water, cause burns, and irritate to respiratory system. When use it, wear suitable protective clothing, gloves and eye/face protection. If contact with eyes, rinse immediately with plenty of water and seek medical advice. Or if you feel unwell, seek medical advice immediately.

  alpha,alpha-Dichlorodiphenylmethane , with cas registry number of 2051-90-3, is clear light yellow liquid. Its IUPAC name is called [dichloro(phenyl)methyl]benzene. And its systematic name is 1,1'-(dichloromethanediyl)dibenzene . The strings about the structure include SMILES: ClC(Cl)(c1ccccc1)c2ccccc2, and InChI: InChI=1/C13H10Cl2/c14-13(15,11-7-3-1-4-8-11)12-9-5-2-6-10-12/h1-10H.

  alpha,alpha-Dichlorodiphenylmethane is always used to prepare other chemicals in organic synthesis such as benzophenone ; tetraphenylethene ; difluoro-diphenyl-methane ; 2,2-diphenyl-benzo[1,3]dioxole . For example, alpha,alpha-Dichlorodiphenylmethane is used to produce the Benzophenone using the reagent of (CH₃)₂SO, the catalyst of FeCl₃, and other catalyst like SbCl₃ under the temperature of 80 ℃. The reaction time is 2 hours. The yield is about 91%.