Diphenyl carbonyl acyl dihydrazides

Diphenyl carbonyl acyl dihydrazides

Product description:

English name: Diphenylcartazide; 15-Diphenylcarbazide; 15-Diphenylcarbohydrazide
Other names: Diphenyl Urea; Diphenylcarbazide; diphenyl carbon dihydrazide; 15- diphenyl carbonyl hydrazide; all Diphenylcarbazide; symmetrical diphenyl Carbodiphenylmethoxy hydrazine; diphenyl-kai hydrazine; carbonyl Generation double phenylhydrazine; diphenyl hydrazine; symmetrical diphenyl urea; 15- diphenyl hydrazine Ji Kaba
CAS: 140-22-7
C13H14N4O = 242.28
Level: AR
Melting point: 170 ~ 174 ℃
Chromate complexes molar absorption coefficient, ε / (L / cm`mol): ≥3.8 * 104
Ethanol dissolution test: Qualified
Residue on ignition (Sulfate): ≤0.10%
Appearance: white or light pink crystalline powder, exposed in air gradually turns red slightly soluble in water (~ 0.024g / 100ml), insoluble in ether, other organic solvent soluble in ethanol, acetone and other solution than solid. easily oxidized, and gradually become yellow and brown metal reagent and various colored reaction occurs:. Ag + (purple), Ni2 + (blue) Pb2 + (orange and blue) reagent and reaction mechanism of CrO42- still not entirely clear, it was considered. diphenyl CrO42- by the oxidation of hydrazine diphenyl semicarbazone, which then forms a complex with the Cr3 +. cation complexes formed in conjunction with Cl- ion pair, for amyl alcohol extraction. Cu2 +, Fe2 +, Hg +, Hg2 +, Se4 + and principles TcO4- with reagent similar reaction CrO42-, namely redox and complexation reactions
Use: Biochemical studies for iron titration indicator in the determination of chromium, mercury and lead, Cadmium, mercury, magnesium, aldehydes and alkali soil root dichromate colorimetric determination of chloride reduction indicator mercury Method... Determination of adsorption indicator chloride and cyanide. (used for spectrophotometric determination of chromium coloring agents and test Cu2 +, Fe3 +, Hg2 + and other coloring agent is also used as a redox, adsorption and titration with the indicator. )
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