diphenylmethane


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diphenylmethane

[dī¦fen·əl′me‚thān]
(organic chemistry)
(C6H5)2CH2 Combustible, colorless crystals melting at 26.5°C; used in perfumery, dyes, and organic synthesis.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
References in periodicals archive ?
Diphenylmethane diisocyanate -50 (MDI-50, 50 wt% of 4,4'-diphenylmethane diisocyanate and 50 wt% of 2,4'-diphenylmethane diisocyanate) with 99.6 wt% of purity was provided by Wanhua Polyurethane Limited Company (China) and used as received.
The second group of adhesives identified by Frihart is the in situ polymerized group of adhesives, which includes epoxy, polymeric diphenylmethane diisocyanate (pMDI), phenol-formaldehyde (PF), phenol resorcinol--formaldehyde (PRF), melamine-formaldehyde (MF), melamine-urea-formaldehyde (MUF), and urea-formaldehyde (UF) adhesives.
As the isocyanate component, polymeric diphenylmethane diisocyanate was utilized (NCO = 31.5 wt.%).
Suitable isocyanates are diphenylmethane diisocyanates and polymeric diphenylmethane diisocyanates.
Badawi, "A comparative study of the structure and vibrational spectra of diphenylmethane, the carcinogen 4,4'-methylenedianiline and 4,4'-methylene-bis(N,N-dimethylaniline)," Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy, vol.
and SINOPEC Group Assets Management Corporation plan to build a new plant to produce 240000 metric tons of crude MDI (diphenylmethane diisocyanate) per year at Shanghai Lianheng Isocyanate Co.
Chemicals company Huntsman (NYSE:HUN) said on Wednesday that it intends to double the MDI (diphenylmethane diisocyanate) splitting capacity at the Shanghai Chemical Industrial Park (SCIP) in Caojing in partnership with Shanghai Chlor-Alkali Chemical Co (SCAC).
The police official said the contents of the boxes included four bottles of 2.5 liters of HCL Acid, 20 bottles of AU Formate, four bottles of ethanol absolute, 52 bottles of 500ml methanol, 20 empty bottles of 500ml methanol, 27 bottles of 500ml tartaric acid, 12 bottles of 250 ml diphenylmethane sulphate, 77 500ml bottles of ethanol, seven bottles of 2.5 liters of formalin, 30 packs of 500 mgs of powdered charcoal, 163 bottles of 500ml formic acid, assorted cooker beakers, graduated cylinders, hoses, flask glasses' and an electric burner.
Murugesan, "Selective oxidation of diphenylmethane to benzophenone over CeAlP[O.sub.5] molecular sieves," Chinese Journal of Catalysis, vol.
(5) Diphenylmethane diisocyanate, common in high-strength household glue, has been reported to produce gastric obstructions in dogs.
In case of a lower content of alkali the first-formed monohydroxymethylphenols have a greater tendency to further condensation to diphenylmethane derivatives.