1,5-Diphenylcarbazide Chemical Properties

Melting point:

170-175 °C(lit.)

Boiling point:

385.1°C (rough estimate)

Density 

1.31 g/cm3

refractive index 

1.6120 (estimate)

storage temp. 

2-8°C

solubility 

aqueous acetone: passes test

pka

9.98±0.43(Predicted)

form 

Powder or Flakes

color 

White to cream

Odor

Odorless

Water Solubility 

Soluble in glacial acetic acid, alcohol and acetone. Slightly soluble in water.

Sensitive 

Light Sensitive

Merck 

14,3321

BRN 

752039

Stability:

Stable. Light sensitive. Incompatible with strong oxidizing agents.

CAS DataBase Reference

140-22-7(CAS DataBase Reference)

NIST Chemistry Reference

N'',n'''-diphenylcarbonohydrazide(140-22-7)

EPA Substance Registry System

Carbonic dihydrazide, 2,2'-diphenyl- (140-22-7)

Safety Information

Hazard Codes 

Xi

Risk Statements 

36/37/38

Safety Statements 

26-36

WGK Germany 

3

RTECS 

FF2750000

F 

8-10-23

TSCA 

Yes

HazardClass 

IRRITANT

HS Code 

29280090

MSDS

• Language:English Provider:1,5-Diphenylcarbazide
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1,5-Diphenylcarbazide Usage And Synthesis

Chemical Properties

white crystals or powder

Uses

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.

Uses

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.

Uses

As indicator in titrating Fe; for the colorimetric determination of Cr, detection of Cd, Hg, Mg, aldehydes, emetine.

Definition

ChEBI: Diphenylcarbazide is a member of phenylhydrazines.

General Description

1,5-Diphenylcarbazide is a colorimetric reagent commonly employed in the determination of trace metals.

Purification Methods

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(140-22-7)Related Product Information

• Methylhydrazine
• 1-PHENYLSEMICARBAZIDE
• Carbohydrazide
• Phenylhydrazine
• 1-FORMYL-2-PHENYLHYDRAZINE
• Urea
• S-DIPHENYLCARBAZONE
• Semicarbazide
• 1,5-Diphenylcarbazide
• Hydrazinium hydroxide solution
• 1，2-Dimethyl hydrazine
• 1,5-BIS(4-NITROPHENYL)CARBOHYDRAZIDE
• Formylhydrazine
• 4,4-DIPHENYLSEMICARBAZIDE
• 1,4-DIPHENYLSEMICARBAZIDE
• DIPHENYLCARBAZONE
• DIPHENYLCARBAZIDE,1%SOLUTIONINETHANOL
• DIPHENYLCARBAZIDE,0.5%SOLUTIONINACETONE