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: 2026-01-13 11:26:52
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 | n |
| 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. |
Computed Descriptors for Diphenyldichloromethane
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