Außerdem wird bzw. Lesen Sie alles Wissenswerte über unser Fachportal chemie.de. Ihr Bowser ist nicht aktuell. [6] Researches showed that 4-aminobiphenyl is responsible for bladder cancer in humans and dogs by damaging DNA. [12], Toxic fumes arise from this compound when heated to decomposition. 1907/2006 (REACH) im Rahmen der Stoffbewertung in den fortlaufenden Aktionsplan der Gemeinschaft (CoRAP) aufgenommen. It is prepared by reduction of 4-nitrobiphenyl, which, together with the 2-nitro derivatives, is obtained by nitration of biphenyl. It may be isolated from coal tar; in the United States, it is manufactured on a large scale by the thermal dehydrogenation of benzene. Wegen der hohen Zersetzungstemperatur unter Luftabschluss eignet sich Biphenyl als Wärmeträger sowie als Arbeitsmittel in Dampfkraftwerken. Particularly in older literature, compounds containing the functional group consisting of biphenyl less one hydrogen (the site at which it is attached) may use the prefixes xenyl or diphenylyl. [13] Excessive inhalation exposure of 4-aminobiphenyl may induce acute toxicity such as headache, lethargy, cyanosis and burning sensations mainly in the urinary tract. Biphenyl (auch Diphenyl, Phenylbenzol und Dibenzol) ist ein farbloser, kristalliner Feststoff aus der Klasse der aromatischen Kohlenwasserstoffe, genauer der Biaryle.Er hemmt das Schimmelpilzwachstum und wirkt daher als Fungizid oder Konservierungsmittel für Lebensmittel, hat jedoch in … Biphenyl (Diphenyl) Used as a Heat Transfer Fluid as an Intermediate for organic chemicals. N-glucuronides of 4-aminobiphenyl and N-hydroxy-4-aminobiphenyl can be hydrolyzed by acidic urine to their corresponding arylamines, they can in turn enter the bladder epithelium and undergo further metabolism by peroxidation and/or O-acetylation to form DNA adducts. Es hat einen charakteristischen Geruch. [10] A linear correlation was found between adduct levels and the occurrence of liver tumors in female mice by comparing DNA adducts and tumorigenesis. The p53 gene codes for the tumor suppressor p53 proteins. ; Nguyen, A.; Steele, W.V. mol−1. In one study, out of 171 workers in a plant manufacturing 4-aminobiphenyl, 11% of them developed bladder tumors. Biphenyl ist der Grundkörper für die ersten kommerziell erfolgreichen nematischen Flüssigkristalle (Cyanobiphenyle), die Anfang der 1970er Jahre in Digitaluhren und Taschenrechnern zum Einsatz kamen. Biphenyl (auch Diphenyl, Phenylbenzol und Dibenzol) ist ein farbloser, kristalliner Feststoff aus der Klasse der aromatischen Kohlenwasserstoffe mit der Summenformel C 12 H 10.Es wird als Lebensmittelzusatzstoff (Konservierungsmittel) E 230 zur Hemmung von Schimmelpilzen verwendet. Englisch: Phenylbenzene, Diphenyl, Biphenyl Französisch: Phenyl benzène, Diphényle, Biphényle Italienisch: Bifenile, Fenilbenzene, Difenile Spanisch: Fenilben ceno, Difenilo, Bifenilo. Inhaltsverzeichnis. Biphenyl ACC# 15418 Section 1 - Chemical Product and Company Identification MSDS Name: Biphenyl Catalog Numbers: AC106250000, AC106250010, AC106252500 Synonyms: Diphenyl. Diphenyl is a synonym of biphenyl. It has significant vapor pressure (4 Pa at 20°C), low water solubility, and illustrates substantial volatilization in an aqueous solution. [2], Biphenyl wurde 2012 von der EU gemäß der Verordnung (EG) Nr. This can be done by reacting 4-azidobiphenyl with diphosphorus tetraiodide (P2I4), which can cleave the nitrogen-nitrogen bond. die Umwelt neu bewertet und ggf. Biphenyl ist relativ reaktionsträge. Like other aniline derivatives, 4-aminobiphenyl is weakly basic. 4-Aminobiphenyl was commonly used in the past as a rubber antioxidant and an intermediate for dyes. It is a colorless solid, although aged samples can appear colored. Der Wirkstoff Biphenyl (früher: Diphenyl) ist 2005 in der EU aus der Liste der zulässigen Oberflächenbehandlungsmittel gestrichen worden. [15] The oral LD50 for rats are 500 mg/kg body weight and for rabbits are 690 mg/kg body weight. Biphenyl bildet … Biphenyl ist relativ reaktionsträge. A mutation in this gene can lead to formation of tumors. [7] Due to its carcinogenic effects, commercial production of 4-aminobiphenyl ceased in the United States in the 1950s.[8]. Exposure to this aryl-amine can happen through contact with chemical dyes and from inhalation of cigarette smoke. R. D. Chirico, S. E. Knipmeyer, A. Nguyen, W. V. Steele: Zuletzt bearbeitet am 4. These enzymes can also N-acetylate 4-aminobiphenyl. Der Flammpunkt liegt bei 113 °C, die Zündtemperatur bei 540 °C. As nouns the difference between diphenyl and biphenyl is that diphenyl is (organic compound) an alternative name of biphenyl while biphenyl is (organic compound|uncountable) a colourless solid hydrocarbon, c 12 h 10 , consisting of two benzene … Contact HTF Representative Terms and Conditions Typical Properties. Glucuronidation results in inactivation and excretion, therefore N-glucuronidation also competes with N-oxidation.4-aminobiphenyl is proposed to initiate bladder cancer by a mechanism involving hepatic N-oxidation and subsequent N-glucuronidation. CAS No. Biphenyl ist der Grundkörper für die ersten kommerziell erfolgreichen nematischen Flüssigkristalle (Cyanobiphenyle), die Anfang der 1970er-Jahre in Digitaluhren und Taschenrechnern zum Einsatz kamen. Biphenyl ist wassergefährdend (WGK 2). A certain human UGT catalyzes the formation of the N-glucuronide of 4-aminobiphenyl. Um alle Funktionen dieser Seite zu nutzen, aktivieren Sie bitte die Cookies in Ihrem Browser.

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