Detail of "90-99-3"

CAS Number:
90-99-3
Name:
Benzene,1,1'-(chloromethylene)bis-
Superlist Name:
Chlorodiphenylmethane
Molecular Structure:
Formula:
C₁₃H₁₁Cl
Molecular Weight:
202.68
Synonyms:
a-Chlorodiphenylmethane;NSC 76584;Diphenylmethylchloride;Diphenylchloromethane;Benzhydrylchloride;1,1'-(Chloromethylene)bisbenzene;Methane,chlorodiphenyl- (6CI,8CI);
EINECS:
202-031-7
Density:
1.119 g/cm³
Melting Point:
15-17 ºC(lit.)
Boiling Point:
315.5 ºC at 760 mmHg
Flash Point:
127 ºC
Solubility:
slightly soluble in water
Appearance:
Clear colorless to yellow liquid
Hazard Symbols:
Xi,C
Risk Codes:
36/37/38-34
Safety:
26-24/25-45-36/37/39-27 Details
Transport Information:
UN 3265 8/PG 2

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Proton magnetic spectroscopic (PMR) determination of diphenhydramine hydrochloride in dosage forms: Proton magnetic spectroscopic (PMR) determination of diphenhydramine hydrochloride in dosage forms. Hanna, George M.; Lau-Cam, Cesar A. (Dep. Health Hum. Serv., Food and Drug Adm., Brooklyn, NY 11232, USA). Pharmazie, 39(12), 816-18 (English) 1984. CODEN: PHARAT. ISSN: 0031-7144. DOCUMENT TYPE: Journal CA Section: 64 (Pharmaceutical Analysis) Direct dissoln. of the bulk material, capsule, or freeze-dried soln. for injection and an internal std. in CDCl3 and recording of the PMR spectra provides a simple, specific, and accurate assay method for diphenylhydramine [58-73-1] as the hydrochloride in pharmaceutical samples. The drug content can be calcd. from the integral values for the N-methyl protons of diphenylhydramine at ~2.85 ppm and for the Me protons of tert-Bu alc. at ~1.27 ppm. The mean recoveries from synthetic mixts. stimulating capsules and injectables were 100.0% and 100.1%, resp. The method also permits the detection of degrdn. products of diphenhydramine such as benzhydrol [91-01-0], diphenylchloromethane [90-99-3], and 2-(dimethylamino)ethanol [108-01-0] to a min. of about 2% of the parent compd.

Direct determination of diphenylchloromethane content by alkali titration: Direct determination of diphenylchloromethane content by alkali titration. Zheng, Guimu; Jiang, Qiulan; Xiang, Daoyi (Chungking Ximan No. 1 Drug Fact., Chungking, Peop. Rep. China). Huaxue Shijie, 25(8), 295-6 (Chinese) 1984. CODEN: HUAKAB. ISSN: 0367-6358. DOCUMENT TYPE: Journal CA Section: 64 (Pharmaceutical Analysis) Ph2CHCl [90-99-3] was detd. by hydrolysis, and calcd. by using the equation: (total Cl- free cl) ′ 202.50/35.45. The total Cl was detd. by dissolving Ph2CHCl in EtOH, adding phenolphthalein indicator, and titrating with 0.1N NaOH until light pink. The free Cl was detd. by dissolving Ph2CHCl in H2O, filtering, adding phenolphthalein, and titrating with 0.1N NaOH. This method is accurate, precise, simple and is useful for detg. Ph2CHCl in drug synthesis.