Diphenylmethan

Bezeichnung:Diphenylmethan

Englisch Name:Diphenylmethane

CBNumberCB3852608

SummenformelC13H12

Molgewicht168.23

Synonyma

Diphenylmethan

Diphenylmethan physikalisch-chemischer Eigenschaften

Schmelzpunkt	22-24 °C (lit.)
Siedepunkt	264 °C (lit.)
Dichte	1.006 g/mL at 25 °C (lit.)
Dampfdichte	5.79 (vs air)
Dampfdruck	<1 mm Hg ( 77 °C)
Brechungsindex	n20/D 1.577(lit.)
Flammpunkt	>230 °F
storage temp.	Store below +30°C.
Löslichkeit	Soluble in ethanol, ether, benzene and chloroform.
pka	33.5(at 25℃)
Aggregatzustand	Low Melting Solid
Farbe	Colorless to pale yellow
Wichte	1.006
Geruch (Odor)	at 10.00 % in dipropylene glycol. sweet green wet plastic geranium
Geruchsart	green
Explosionsgrenze	0.69-8.66%(V)
Wasserlöslichkeit	14.1mg/L(25 ºC)
FreezingPoint	24.0 to 26.0 ℃
Merck	14,3328
BRN	1904982
Dielectric constant	2.6（26℃）
LogP	4.140
CAS Datenbank	101-81-5(CAS DataBase Reference)
NIST chemische Informationen	Diphenylmethane(101-81-5)
EPA chemische Informationen	Diphenylmethane (101-81-5)

Sicherheit

Kennzeichnung gefährlicher	Xn
R-Sätze:	22
S-Sätze:	24/25-58-54-44-29
RIDADR	UN3077
WGK Germany	2
RTECS-Nr.	DA4976500
Selbstentzündungstemperatur	905 °F
TSCA	Yes
HazardClass	9
PackingGroup	III
HS Code	29029090
Giftige Stoffe Daten	101-81-5(Hazardous Substances Data)
Toxizität	LD50 orally in Rabbit: 2250 mg/kg LD50 dermal Rabbit > 5000 mg/kg

Gefahreninformationscode (GHS)

R-Sätze Betriebsanweisung:
R22:Gesundheitsschädlich beim Verschlucken.
S-Sätze Betriebsanweisung:
S24/25:Berührung mit den Augen und der Haut vermeiden.
Chemische Eigenschaften
Colorless to pale yellow low melting solid
Occurrence
Has apparently not been reported to occur in nature.
Verwenden
Diphenylmethane, is used as an adhesive chemical composition for making flexible laminates for use in food packaging.
synthetische
By interaction of benzyl chloride and benzene in the presence of an acid cata lyst.
Definition
ChEBI: A diarylmethane that is methane substituted by two phenyl groups.
Synthesis Reference(s)
Journal of the American Chemical Society, 91, p. 5663, 1969 DOI: 10.1021/ja01048a053
Chemical and Pharmaceutical Bulletin, 27, p. 2405, 1979 DOI: 10.1248/cpb.27.2405
The Journal of Organic Chemistry, 57, p. 2143, 1992 DOI: 10.1021/jo00033a041
Stoffwechsel
Diphenylmethane is hydroxylated in the rabbit and some 15% of the dose is excreted as 4-hydroxydiphenylmethane, which is largely (80-90%) in the free state. Neither the hydrocarbon nor its metabolite is oestrogenic. This reaction also occurs in the dog (Williams, 1959).
läuterung methode
Sublime it under vacuum, or distil it at 72-75o/0.4mm. Recrystallise it from cold EtOH. It has also been purified by fractional crystallisation from the melt. [Armarego Aust J Chem 13 95 1960, Beilstein 5 II 498, 5 IV 1841.]