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Merck
CN

33153

Diphenylcarbazone

for spectrophotometric det. of Cd, Cr, Cu, Fe, Hg, Mo

Synonym(s):

Phenylazoformic acid 2-phenylhydrazide

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About This Item

Linear Formula:
C6H5NHNHCON=NC6H5
CAS Number:
538-62-5
Molecular Weight:
240.26
EC Number:
208-698-0
UNSPSC Code:
12352200
PubChem Substance ID:
24859970
Beilstein/REAXYS Number:
959475
MDL number:
MFCD00003024

Key Documents

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InChI key

ZFWAHZCOKGWUIT-BMRADRMJSA-N

InChI

1S/C13H12N4O/c18-13(16-14-11-7-3-1-4-8-11)17-15-12-9-5-2-6-10-12/h1-10,14H,(H,16,18)/b17-15+

SMILES string

O=C(NNc1ccccc1)\N=N\c2ccccc2

description

for metal titration

quality

for spectrophotometric det. of Cd, Cr, Cu, Fe, Hg, Mo

technique(s)

titration: suitable

impurities

insoluble in ethanol, in accordance

ign. residue

≤0.1% (as SO4)

mp

119-123 °C (lit.)

suitability

passes test for Hg detection

Other Notes

Spectrophotometric determination of many metals

pictograms

Exclamation mark
GHS07

signalword

Warning

hcodes

H315,H319

Hazard Classifications

Eye Irrit. 2 - Skin Irrit. 2

Storage Class

11 - Combustible Solids

wgk

WGK 3

flash_point_f

Not applicable

flash_point_c

Not applicable

ppe

Eyeshields, Gloves, type N95 (US)

Regulatory Information

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K.L. Cheng et al. et al.
Handbook of Organic Analytical Reagents null
Z. Anal. Chem., 286, 107-107 (1977)
Katsuhiko Yokoi
Biological trace element research, 85(1), 87-94 (2002-03-08)
A colorimetic method is outlined for the determination of the chloride ion in biological samples (blood serum, plasma, and urine). The present method is based on the quantitative reduction of free mercuric ions by chloride ions. Chloride ions form an
K O Burkey et al.
Biochemistry, 20(10), 2961-2967 (1981-05-12)
The net charge on the photosystem I core complex of Shiozawa et al. (Shiozawa, J. A., Alberte, R. S., & Thornber, J. P. (1974) Arch. Biochem. Biophys. 165, 388-397) has been altered by using a water-soluble carbodiimide to form an
W T Hron et al.
Journal of lipid research, 22(2), 377-381 (1981-02-01)
A sensitive micromethod for the colorimetric determination of free fatty acids (FFA) in plasma has been developed. FFA are extracted with chloroform-heptane-methanol with silicic acid being added to eliminate interfering phospholipids. Diphenylcarbazide containing diphenylcarbazone has been chosen as color-developing reagent
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