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Merck
CN

35620

2,6-Dichloroquinone-4-chloroimide

for spectrophotometric det. of vitamin B6, ≥99.0%

Synonym(s):

N,2,6-Trichloro-p-benzoquinoneimide, Gibb’s reagent

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About This Item

Empirical Formula (Hill Notation):
C6H2Cl3NO
CAS Number:
101-38-2
Molecular Weight:
210.45
UNSPSC Code:
41116105
NACRES:
NA.21
PubChem Substance ID:
329755199
EC Number:
202-937-2
Beilstein/REAXYS Number:
2364249
MDL number:
MFCD00001611
Assay:
≥99.0% (AT), ≥99.0%

Key Documents

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InChI

1S/C6H2Cl3NO/c7-4-1-3(10-9)2-5(8)6(4)11/h1-2H

InChI key

YHUMTHWQGWPJOQ-UHFFFAOYSA-N

SMILES string

Cl\N=C1\C=C(Cl)C(=O)C(Cl)=C1

assay

≥99.0% (AT), ≥99.0%

quality

for spectrophotometric det. of vitamin B6

technique(s)

UV/Vis spectroscopy: suitable

mp

65-67 °C (lit.), 65-68 °C

application(s)

food and beverages
vitamins, nutraceuticals, and natural products

storage temp.

2-8°C

Quality Level

100

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General description

2,6-Dichloroquinone-4-chloroimide generally find application in being used as spot test and chromatographic spray reagents, mainly for phenols, though it can be used in detection of other types of compounds such as antioxidants, few primary and secondary amines, on silica gel chromatographic plates. Its decomposition rate is directly proportional to pressure.

Application

Gibb′s reagent was used in paper chromatography, in an experiment conducted to semi-quantitatively estimate tyramine and octopamine.

pictograms

FlameExclamation mark
GHS02,GHS07

signalword

Danger

Hazard Classifications

Eye Irrit. 2 - Self-react. C - Skin Irrit. 2

Storage Class

4.1A - Other explosive hazardous materials

wgk

WGK 3

flash_point_f

Not applicable

flash_point_c

Not applicable

ppe

Eyeshields, Gloves, type P3 (EN 143) respirator cartridges

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Certificates of Analysis (COA)

Lot/Batch Number
SDBB5943
STBK7183
STBL1753
STBL3033
STBL0579

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Colour reaction of phenols with the gibbs reagent. The reaction mechanism and decomposition and stabilisation of the reagent.
Svobodova D
Microchimica Acta, 67 (3-4), 251-264 (1977)
2, 6-Dichloroquinone 4-chloroimide as a reagent for amines and aromatic hydrocarbons on thin-layer chromatograms.
Hansbro RJ
Analytical Chemistry, 40 (14), 2138-2143 (1968)
Occurrence and some properties of eledoisin in extracts of posterior salivary glands of Eledone.
Anastasi A and Erspamer V.
British Journal of Pharmacology and Chemotherapy, 19 (2), 326-336 (1962)
Mara Andréia Gotardo et al.
Spectrochimica acta. Part A, Molecular and biomolecular spectroscopy, 69(4), 1103-1109 (2007-07-25)
This paper describes an analytical reflectometric method that has an objective not only the industrial quality control but also to detect possible falsifications and/or adulterations of propranolol in pharmaceutical formulations. The method is based on the diffuse reflectance measurements of
G G Mohamed et al.
Journal of pharmaceutical and biomedical analysis, 28(6), 1127-1133 (2002-06-07)
A simple, rapid and sensitive spectrophotometric method for the determination of sulbutamol in pure form and in different pharmaceutical preparations has been developed. The charge transfer (CT) reaction between salbutamol as electron donor and 2,6-dichloroquinone chlorimide (DCQ) and 7,7,8,8-tetracyanoquinodimethane (TCNQ)
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