1,5-Diphenylcarbonohydrazid

Bezeichnung:1,5-Diphenylcarbonohydrazid

CAS-Nr140-22-7

Englisch Name:1,5-Diphenylcarbazide

CBNumberCB9266061

SummenformelC13H14N4O

Molgewicht242.28

MOL-Datei140-22-7.mol

Synonyma

1,5-Diphenylcarbonohydrazid

1,5-Diphenylcarbonohydrazid physikalisch-chemischer Eigenschaften

Schmelzpunkt	170-175 °C(lit.)
Siedepunkt	385.1°C (rough estimate)
Dichte	1.31 g/cm3
Brechungsindex	1.6120 (estimate)
storage temp.	2-8°C
Löslichkeit	aqueous acetone: passes test
Aggregatzustand	Powder or Flakes
pka	9.98±0.43(Predicted)
Farbe	White to cream
Geruch (Odor)	Odorless
Wasserlöslichkeit	Soluble in glacial acetic acid, alcohol and acetone. Slightly soluble in water.
Sensitive	Light Sensitive
Merck	14,3321
BRN	752039
Stabilität	Stable. Light sensitive. Incompatible with strong oxidizing agents.
CAS Datenbank	140-22-7(CAS DataBase Reference)
NIST chemische Informationen	N'',n'''-diphenylcarbonohydrazide(140-22-7)
EPA chemische Informationen	Carbonic dihydrazide, 2,2'-diphenyl- (140-22-7)

Sicherheit

Kennzeichnung gefährlicher	Xi
R-Sätze:	36/37/38
S-Sätze:	26-36
WGK Germany	3
RTECS-Nr.	FF2750000
F	8-10-23
TSCA	Yes
HazardClass	IRRITANT
HS Code	29280090

Gefahreninformationscode (GHS)

1,5-Diphenylcarbazide Chemische Eigenschaften,Einsatz,Produktion Methoden

R-Sätze Betriebsanweisung:
R36/37/38:Reizt die Augen, die Atmungsorgane und die Haut.
S-Sätze Betriebsanweisung:
S26:Bei Berührung mit den Augen sofort gründlich mit Wasser abspülen und Arzt konsultieren.
S36:DE: Bei der Arbeit geeignete Schutzkleidung tragen.
Chemische Eigenschaften
white crystals or powder
Verwenden
1,5-Diphenylcarbazide is used in the colorimetric determination of chromium, osmium as well as in the detection of cadmium, mercury, magnesium, emetine and aldehydes.
Verwenden
As indicator in titrating Fe; for the colorimetric determination of Cr, detection of Cd, Hg, Mg, aldehydes, emetine.
Verwenden
1,5-Diphenylcarbazideis a carbazide derivative used in the colorimteric determination of chromium as well as in the detection of cadmium, mercury, magnesium and aldehydes.
Definition
ChEBI: Diphenylcarbazide is a member of phenylhydrazines.
Allgemeine Beschreibung
1,5-Diphenylcarbazide is a colorimetric reagent commonly employed in the determination of trace metals.
läuterung methode
A common impurity is phenyl-semicarbazide which can be removed by chromatography: ~8g in H2O is placed on a column (polyamide 6 powder, Macherey-Nagel-GmbH-Germany, washed several times with MeOH), eluted with H2O/MeOH/AcOH (1:3:0.04) at 7-8 drops/second, then eluted with the same solvent mixture but diluted 5 fold with H2O. The purification is followed by UV light at 280nm. The effluent is evaporated to dryness in vacuo at ~28o. [chromatography, IR & UV: Willems et al. Anal Chim Acta 51 544 1970]. Recrystallise it from EtOH by adding CCl4 to induce crystallisation, or AcOH to give a white crystalline powder which turns pink in air. It is air and light sensitive and should be stored in the dark under N2. [Beilstein 15 H 292, 15 IV 182.]

1,5-Diphenylcarbazide Upstream-Materialien And Downstream Produkte

1,5-Diphenylcarbonohydrazid Anbieter Lieferant Produzent Hersteller Vertrieb Händler.

140-22-7, 1,5-Diphenylcarbazide Verwandte Suche:

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