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137952

Sigma-Aldrich

2,4-Dinitrobenzoic acid

96%

Synonym(s):

1-Carboxy-2,4-dinitrobenzene

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About This Item

Linear Formula:
(O2N)2C6H3CO2H
CAS Number:
610-30-0
Molecular Weight:
212.12
Beilstein:
658650
EC Number:
210-219-5
MDL number:
MFCD00017006
UNSPSC Code:
12352100
PubChem Substance ID:
24848224
NACRES:
NA.22

Quality Level

100

Assay

96%

form

solid

mp

176-180 °C (lit.)

SMILES string

OC(=O)c1ccc(cc1[N+]([O-])=O)[N+]([O-])=O

InChI

1S/C7H4N2O6/c10-7(11)5-2-1-4(8(12)13)3-6(5)9(14)15/h1-3H,(H,10,11)

InChI key

ZIIGSRYPZWDGBT-UHFFFAOYSA-N

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Application

2,4-Dinitrobenzoic acid can be used as a reactant:
  • In decarboxylative C-N cross-coupling reactions.
  • To synthesize Zwitterionic azaspirocyclic hydantoins by reacting with various carbodiimides via in situ intramolecular dearomatization reaction.
  • To prepare 1-(2,4-dinitrophenyl)ethanone by condensation with dimethyl malonate and subsequent decarboxylation reaction.

It can also be used in the spectrophotometric determination of diazepam in pure samples and in its pharmaceutical preparations. In capillary zone electrophoresis, it can be employed as chromophore probe for the analysis of perfluorinated carboxylic acids in water.

Pictograms

Exclamation mark
GHS07

Signal Word

Warning

Hazard Statements

H315 - H319

Hazard Classifications

Eye Irrit. 2 - Skin Irrit. 2

Storage Class Code

11 - Combustible Solids

WGK

WGK 3

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

Certificates of Analysis (COA)

Search for Certificates of Analysis (COA) by entering the products Lot/Batch Number. Lot and Batch Numbers can be found on a product’s label following the words ‘Lot’ or ‘Batch’.

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Lena Wójcik et al.
Journal of chromatography. A, 1128(1-2), 290-297 (2006-07-14)
Perfluorinated carboxylic acids (PFCAs) belong to anthropogenic fluoroorganic compounds that have been detected in the natural environment and living organisms including humans. A capillary zone electrophoretic method with indirect UV detection using 2,4-dinitrobenzoic acid (2,4-DNBA) as a chromophore probe has
W F El-Hawary et al.
International journal of biomedical science : IJBS, 3(1), 50-55 (2007-03-01)
The interaction of diazepam with picric acid (I), 3,5-dinitrobenzoic acid (II) and 2,4-dinitrobenzoic acid (III) was found to be useful for its spectrophotometric determination. The quantitation was carried out at 475, 500, and 500 nm for the reaction with (I)
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Marine Chemistry, 145-147, 29-36 (2012)
Spectrophotometric determination of diazepam in pure form, tablets and ampoules
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