Description

p-Tolualdehyde 2,4-Dinitrophenylhydrazone (CAS No. 2571-00-8) is a high-purity analytical reagent widely used in chemical research and quality control laboratories. This compound, with the molecular formula C₁₄H₁₂N₄O₄, is a derivative of p-tolualdehyde and 2,4-dinitrophenylhydrazine, forming a stable hydrazone complex. It appears as a yellow to orange crystalline powder with excellent solubility in organic solvents like acetone, ethanol, and dimethyl sulfoxide (DMSO). Ideal for HPLC, UV-Vis spectroscopy, and mass spectrometry applications, this reagent serves as a critical standard for the identification and quantification of carbonyl compounds. Packaged under inert conditions to ensure stability, it is supplied with comprehensive analytical certificates (CoA) including purity (≥98%), melting point, and spectroscopic data.

Properties

• CAS Number: 2571-00-8
• Complexity: 424
• IUPAC Name: 2,4-dinitro-N-[(E)-p-tolylmethyleneamino]aniline
• InChI: InChI=1S/C14H12N4O4/c1-10-2-4-11(5-3-10)9-15-16-13-7-6-12(17(19)20)8-14(13)18(21)22/h2-9,16H,1H3/b15-9+
• InChI Key: KOMHUUXZDFABJZ-OQLLNIDSSA-N
• Exact Mass: 300.08585488
• Molecular Formula: C14H12N4O4
• Molecular Weight: 300.27
• SMILES: CC1=CC=C(C=C1)/C=N/NC2=C(C=C(C=C2)[N+](=O)[O-])[N+](=O)[O-]
• Topological: 116
• Monoisotopic Mass: 300.08585488
• Synonyms: p-Tolualdehyde 2,4-dinitrophenylhydrazone, 623-764-2, 2571-00-8, 1-(2,4-dinitrophenyl)-2-(4-methylbenzylidene)hydrazine, N-[(E)-(4-methylphenyl)methylideneamino]-2,4-dinitroaniline, 4′-Methylbenzaldehyde 2,4-Dinitrophenylhydrazone, p-Tolualdehyde-2,4-DNPH, NSC74677, MFCD00024382, (2E)-1-(2,4-dinitrophenyl)-2-[(4-methylphenyl)methylidene]hydrazine, KOMHUUXZDFABJZ-OQLLNIDSSA-N, NSC-74677, AKOS001002085, p-Tolualdehyde,4-dinitrophenyl)hydrazone, p-Tolualdehyd-2,4-dinitrophenylhydrazone, AS-76427, P-tolualdehyde 2,4-dinitro-phenylhydrazone, D95377, A817981, p-Methylbenzaldehyde (2,4-dinitrophenyl)hydrazone, P-TOLUALDEHYDE, 2,4-DINITROPHENYLHYDRAZONE, N-[(E)-(4-methylphenyl)methylideneamino]-2,4-dinitro-aniline, Benzaldehyde, 4-methyl-, (2,4-dinitrophenyl)hydrazone (9CI); p-Tolualdehyde, (2,4-dinitrophenyl)hydrazone (6CI,7CI,8CI); 4-Methylbenzaldehyde 2,4-dinitrophenylhydrazone; NSC 74677; p-Methylbenzaldehyde (2,4-dinitrophenyl)hydrazone

p-Tolualdehyde 2,4-Dinitrophenylhydrazone is primarily used as a derivatizing agent for the detection of aldehydes and ketones via UV-Vis spectroscopy or HPLC. It forms colored hydrazones with carbonyl compounds, enabling sensitive quantification in environmental, pharmaceutical, and food samples. Researchers also employ it as a reference standard in method validation and quality control protocols. Its stability and distinct absorbance maxima make it suitable for trace analysis in complex matrices.

Safety and Hazards

GHS Hazard Statements

• H228 (33.3%): Flammable solid [Danger Flammable solids]
• H302 (66.7%): Harmful if swallowed [Warning Acute toxicity, oral]
• H315 (100%): Causes skin irritation [Warning Skin corrosion/irritation]
• H318 (66.7%): Causes serious eye damage [Danger Serious eye damage/eye irritation]
• H319 (33.3%): Causes serious eye irritation [Warning Serious eye damage/eye irritation]
• H335 (66.7%): May cause respiratory irritation [Warning Specific target organ toxicity, single exposure; Respiratory tract irritation]

Precautionary Statements

• P210, P240, P241, P261, P264, P264+P265, P270, P271, P280, P301+P317, P302+P352, P304+P340, P305+P351+P338, P305+P354+P338, P317, P319, P321, P330, P332+P317, P337+P317, P362+P364, P370+P378, P403+P233, P405, and P501

Hazard Classes and Categories

• Flam. Sol. 2 (33.3%)
• Acute Tox. 4 (66.7%)
• Skin Irrit. 2 (100%)
• Eye Dam. 1 (66.7%)
• Eye Irrit. 2 (33.3%)
• STOT SE 3 (66.7%)

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Disclaimer: Sold exclusively for laboratory research. Prohibited for commercial use, diagnostics, or human/animal applications. Buyers assume all compliance liability.