| Identification | More | [Name]
1,5-Diphenylcarbazide | [CAS]
140-22-7 | [Synonyms]
1,5-DIPHENYLCARBAZIDE
1,5-DIPHENYLCARBOHYDRAZIDE
1,5-DIPHENYLCARBONOHYDRADIDE
1,5-DIPHENYLCARBONOHYDRAZIDE
DIPHENYLCARBAZIDE
S-DIPHENYLCARBAZIDE
S-DIPHENYLCARBOHYDRAZIDE
SYM-DIPHENYLACARBAZIDE
SYM-DIPHENYLCARBAZIDE
TIMTEC-BB SBB008713
1,5-Diphenylcabohydrazide
1,5-diphenyl-carbohydrazid
1,5-Diphenylcarbohydrazine
2,2’-diphenylcarbazide
2,2’-diphenyl-carbonicdihydrazid
2,2’-diphenylcarbonicdihydrazide
2,2’-diphenyl-Carbonicdihydrazide
2,2’-Diphenylcarbonicdihy-drazide
2,2'-Diphenylcarbazide
2,2'-Diphenylcarbonic dihydrazide | [EINECS(EC#)]
205-403-7 | [Molecular Formula]
C13H14N4O | [MDL Number]
MFCD00003013 | [Molecular Weight]
242.28 | [MOL File]
140-22-7.mol |
| Chemical Properties | Back Directory | [Appearance]
white crystals or powder | [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 | [form ]
Powder or Flakes | [pka]
9.98±0.43(Predicted) | [color ]
White to cream | [Odor]
Odorless | [Stability:]
Stable. Light sensitive. Incompatible with strong oxidizing agents. | [Water Solubility ]
Soluble in glacial acetic acid, alcohol and acetone. Slightly soluble in water. | [Sensitive ]
Light Sensitive | [Merck ]
14,3321 | [BRN ]
752039 | [CAS DataBase Reference]
140-22-7(CAS DataBase Reference) | [NIST Chemistry Reference]
N'',n'''-diphenylcarbonohydrazide(140-22-7) | [EPA Substance Registry System]
140-22-7(EPA Substance) |
| Safety Data | Back Directory | [Hazard Codes ]
Xi | [Risk Statements ]
R36/37/38:Irritating to eyes, respiratory system and skin . | [Safety Statements ]
S26:In case of contact with eyes, rinse immediately with plenty of water and seek medical advice .
S36:Wear suitable protective clothing . | [WGK Germany ]
3
| [RTECS ]
FF2750000
| [F ]
8-10-23 | [TSCA ]
Yes | [HazardClass ]
IRRITANT | [HS Code ]
29280090 |
| Hazard Information | Back Directory | [Chemical Properties]
white crystals or powder | [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.] |
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