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Merck
CN

442597

Formaldehyde-2,4-DNPH

analytical standard

Synonym(s):

Formaldehyde-2,4-dinitrophenylhydrazone

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About This Item

Linear Formula:
H2C=NNHC6H3(NO2)2
CAS Number:
1081-15-8
Molecular Weight:
210.15
PubChem Substance ID:
24867923
UNSPSC Code:
23151816
Beilstein/REAXYS Number:
750330
MDL number:
MFCD00191364

Key Documents

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SMILES string

[O-][N+](=O)c1ccc(NN=C)c(c1)[N+]([O-])=O

InChI

1S/C7H6N4O4/c1-8-9-6-3-2-5(10(12)13)4-7(6)11(14)15/h2-4,9H,1H2

InChI key

UEQLSLWCHGLSML-UHFFFAOYSA-N

grade

analytical standard

CofA

current certificate can be downloaded

feature

standard type calibration

packaging

ampule of 100 mg

technique(s)

HPLC: suitable, gas chromatography (GC): suitable

mp

153-156 °C (lit.)

application(s)

environmental

format

neat

storage temp.

2-30°C

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General description

Formaldehyde 2,4-dinitro­phenyl­hydrazone (C7H6N4O4) is a planar molecule and the nitro groups are almost coplanar with the benzene ring.

Application

Formaldehyde-2,4-DNPH may be used as an analytical standard for the determination of the analyte in air samples, food and feed products, and aquatic products by various chromatography techniques.
Refer to the product′s Certificate of Analysis for more information on a suitable instrument technique. Contact Technical Service for further support.

pictograms

Exclamation mark
GHS07

signalword

Warning

Hazard Classifications

Eye Irrit. 2 - Skin Irrit. 2 - STOT SE 3

target_organs

Respiratory system

Storage Class

11 - Combustible Solids

wgk

WGK 3

flash_point_f

Not applicable

flash_point_c

Not applicable

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Certificates of Analysis (COA)

Lot/Batch Number
LC23432V
LC22802V
LC21798V
LC20325V
LC19823V

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Trace determination of carbonyl compounds in air by gas chromatography of their 2, 4-dinitrophenylhydrazones
Smith RA and Drummond I
Analyst, 104(1242), 875-877 (1979)
P Wahed et al.
Food chemistry, 202, 476-483 (2016-02-28)
Formalin is carcinogenic and is detrimental to public health. The illegal addition of formalin (37% formaldehyde and 14% methanol) to foods to extend their shelf-life is considered to be a common practice in Bangladesh. The lack of accurate methods and
High performance liquid chromatographic determination of formaldehyde in milk
Kaminski J, et al.
Journal of Liquid Chromatography and Related Technologies, 16(2), 521-526 (1993)
Shigehisa Uchiyama et al.
Journal of chromatography. A, 996(1-2), 95-102 (2003-07-02)
The most widely used method for qualitative and quantitative analysis of carbonyl compounds is the 2,4-dinitrophenylhydrazine method through the formation of 2,4-dinitrophenylhydrazone derivatives. However, this method may cause an analytical error because 2,4-dinitrophenylhydrazones have both E- and Z-stereoisomers. Purified aldehyde-2,4-dinitrophenylhydrazone
Formaldehyde 2, 4-dinitrophenylhydrazone.
Tameem AA
Acta Crystallographica Section E, Structure Reports Online, 63 (1), 57-58 (2006)
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