Diphenyldichloromethane

Synonym(s):Benzophenone dichloride

CAS NO.：2051-90-3
Empirical Formula: C13H10Cl2
Molecular Weight: 237.12
MDL number: MFCD00000811
EINECS: 218-134-5
SAFETY DATA SHEET (SDS)
Update Date: 2023-12-26 17:07:23

What is Diphenyldichloromethane?

Chemical properties

Diphenyldichloromethane is a clear light yellow liquid that is used as a precursor to other organic compounds.It is used in the synthesis of tetraphenylethylene, diphenylmethane imine hydrochloride and benzoic anhydride.

The Uses of Diphenyldichloromethane

α,α-Dichlorodiphenylmethane is a degradation product of of polychloroaromatic insecticides such as Dicofol (D436700) and DDT. It is also used as a catalyst for photodegradation of plastics. It is an important raw material and intermediate used in Organic Synthesis, Pharmaceuticals, Agrochemicals.

Preparation

Dichlorodiphenylmethane is synthesized by the condensation of benzene with carbon tetrachloride (Friedel-Crafts reaction). Add aluminum trichloride and 2/3 amount of anhydrous carbon tetrachloride into the reaction tank, cool to 10-15°C, add 1/12 amount of benzene for reaction, continue to cool to 5-10°C, add the remaining mixture of carbon tetrachloride and benzene dropwise, add after, react at 10°C for 3h.

Synthesis Reference(s)

The Journal of Organic Chemistry, 12, p. 807, 1947 DOI: 10.1021/jo01170a012

Properties of Diphenyldichloromethane

Melting point:	190 °C (decomp)
Boiling point:	305 °C(lit.)
Density	1.235 g/mL at 25 °C(lit.)
refractive index	n20/D 1.605(lit.)
Flash point:	>230 °F
storage temp.	Store below +30°C.
solubility	Benzene (Sparingly), Chloroform (Slightly)
form	Liquid
color	Clear light yellow
Water Solubility	Soluble in water (reacts), ether, benzene, ethanol, and toluene.
BRN	1910601
CAS DataBase Reference	2051-90-3(CAS DataBase Reference)
EPA Substance Registry System	Benzene, 1,1'-(dichloromethylene)bis- (2051-90-3)

Safety information for Diphenyldichloromethane

Signal word	Danger
Pictogram(s)	Corrosion Corrosives GHS05
GHS Hazard Statements	H314:Skin corrosion/irritation
Precautionary Statement Codes	P280:Wear protective gloves/protective clothing/eye protection/face protection. P363:Wash contaminated clothing before reuse. P303+P361+P353:IF ON SKIN (or hair): Remove/Take off Immediately all contaminated clothing. Rinse SKIN with water/shower. P305+P351+P338:IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing. P405:Store locked up.