Monograph pubs.acs.org/doi/book/10.1021/acsreagents
Diphenylcarbazone Compound with s-Diphenylcarbazide ((Phenylazo)formic Acid 2-Phenylhydrazide Compound with 1,5Diphenylcarbohydrazide; “s-Diphenylcarbazone”) Part 4, Monographs for Reagent Chemicals: General Descriptions, Specifications, and Tests eISBN: 9780841230460 Tom Tyner Chair, ACS Committee on Analytical Reagents James Francis Secretary, ACS Committee on Analytical Reagents
ABSTRACT This monograph for Diphenylcarbazone Compound with s-Diphenylcarbazide provides, in addition to common physical constants, a general description including typical appearance, applications, change in state (approximate), and aqueous solubility. The monograph also details the following specifications and corresponding tests for verifying that a substance meets ACS Reagent Grade specifications including: Sensitivity, Residue after Ignition, and Solubility in Acetone.
CAS No. 538-62-5 with CAS No. 140-22-7
GENERAL DESCRIPTION Typical appearance . . . . . . . . Applications . . . . . . . . . . . . . Change in state (approximate) . Aqueous solubility . . . . . . . . .
. . . .
. . . .
. . . .
. . . .
. . . .
. . . .
. . . .
. . . .
. . . .
. . . .
. . . .
bulky, orange crystalline solid indicator melting point, 154–161 °C insoluble
SPECIFICATIONS Sensitivity . . . . . . . . . . . . . . . . . . . . . . . . . Passes test
© 2017 American Chemical Society
A
DOI:10.1021/acsreagents.4128 ACS Reagent Chemicals, Part 4
ACS Reagent Chemicals
Monograph
pubs.acs.org/doi/book/10.1021/acsreagents
Maximum Allowable Residue after ignition. . . . . . . . . . . . . . . . . . 0.1% Solubility in acetone . . . . . . . . . . . . . . . . . . Passes test
TESTS Sensitivity Dissolve 0.135 g of mercuric chloride in 500 mL of water. To 20 mL of this solution, add 0.25 mL of the solution reserved from the test for solubility in acetone. A violet color should develop.
Residue after Ignition [Part 2: Gravimetric Methods; Residue after Ignition]. Ignite 2.0 g. Moisten the char with 2 mL of sulfuric acid.
Solubility in Acetone Dissolve 0.2 g in 25 mL of acetone. The sample should dissolve completely, and the solution should be clear and red. Reserve this solution for the sensitivity test.
© 2017 American Chemical Society
B
DOI:10.1021/acsreagents.4128 ACS Reagent Chemicals, Part 4
