2571-00-8

Basic information

• Product Name: P-TOLUALDEHYDE 2,4-DINITROPHENYLHYDRAZONE
• Synonyms: p-Tolualdehyde (DNPH Derivative) 100mg [2571-00-8];1-(2,4-Dinitrophenyl)-2-(4-Methylbenzylidene)hydrazine;p-Tolualdehyde-DNPH solution,10ppm;p-Tolualdehyde-DNPH solution,15ppm;p-Tolualdehyde-DNPH solution,3ppm;p-Tolualdehyde 2,4-Dinitrophenylhydrazone;4'-METHYLBENZALDEHYDE 2,4-DINITROPHENYLHYDRAZONE;P-TOLUALDEHYDE-DNPH
• CAS NO: 2571-00-8
• Molecular Formula: C₁₄H₁₂N₄O₄
• Molecular Weight: 300.27
• EINECS: 200-835-2
• Mol File: 2571-00-8.mol
• Article Data: 15

Chemical Properties

• Melting Point: 239-240 °C(lit.)
• Boiling Point: 465.5°Cat760mmHg
• Flash Point: 235.3°C
• Appearance: /
• Density: 1.36g/cm³
• Vapor Pressure: 7.63E-09mmHg at 25°C
• Refractive Index: 1.638
• Storage Temp.: 2-8°C
• PKA: 11.53±0.10(Predicted)
• CAS DataBase Reference: P-TOLUALDEHYDE 2,4-DINITROPHENYLHYDRAZONE(CAS DataBase Reference)
• NIST Chemistry Reference: P-TOLUALDEHYDE 2,4-DINITROPHENYLHYDRAZONE(2571-00-8)
• EPA Substance Registry System: P-TOLUALDEHYDE 2,4-DINITROPHENYLHYDRAZONE(2571-00-8)

Safety Data

• Hazard Codes: Xi,T,F,Xn
• Statements: 36/37/38-23/24/25-11-41-37/38-22-36-20/21/22
• Safety Statements: 26-36-45-27-16-39-36/37
• RIDADR: UN 1648 3/PG 2
• WGK Germany: 3
• Hazardous Substances Data: 2571-00-8(Hazardous Substances Data)

Usage

General Description

P-TOLUALDEHYDE 2,4-DINITROPHENYLHYDRAZONE is a chemical compound that is formed by the reaction of p-tolualdehyde with 2,4-dinitrophenylhydrazine. It is commonly used in analytical chemistry as a reagent for the identification and quantification of aldehydes and ketones. The compound forms highly stable yellow crystals and is often used in the formation of derivatives for spectroscopic analysis and chromatography. It is known for its high specificity towards aldehydes and its use in the identification of various compounds in organic chemistry. Additionally, the compound is used in pharmaceutical and chemical research for its unique properties in chemical analysis.

InChI:InChI=1/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

Upstream product

• 104-87-0 4-methyl-benzaldehyde 
• 119-26-6 (2,4-dinitro-phenyl)-hydrazine 
• 104-84-7 para-methylbenzylamine 
• 2403-51-2 2-(4-methylphenyl)-1,3-dioxolane 
• 32386-99-5 2-(4-methylbenzylideneamino)-isoindoline-1,3-dione 
• 589-18-4 4-Methylbenzyl alcohol 
• 19962-27-7 1-methyl-4-(phenoxymethyl)benzene 
• 32386-99-5 2-{[1-p-Tolyl-meth-(E)-ylidene]-amino}-isoindole-1,3-dione 
• 99-65-0 meta-dinitrobenzene 

Downstream Products

• 104-87-0 4-methyl-benzaldehyde 

Relevant articles and documents

Correlation analysis of reactivity in the oxidation of substituted benzyl alcohols by benzimidazolium dichromate - A kinetic and mechanistic aspects

The oxidation of a number of para- and meta-substituted benzyl alcohols by benzimidazolium dichromate (BIDC), in dimethyl sulphoxide, leads to the formation of the corresponding benzaldehydes. The reaction is first order with respect to each BIDC and alcohol. The reaction is catalyzed by hydrogen ions and the dependence has the form kobs = a + b[H+]. The oxidation of [1,1-2H2]benzyl alcohol exhibited the presence of a substantial kinetic isotope effect. The rates of the oxidation of meta-substituted benzyl alcohols correlated best with Taft's σ1 and σR0 constants. The para-substituted compounds exhibited excellent correlation with σ1 and σRBA values. The polar reaction constants are negative. The rate of oxidation of benzyl alcohol was determined in nineteen organic solvents. An analysis of the solvent effect by multiparametric equations indicated the greater importance of the cation-solvating power of the solvents. Suitable mechanisms have been discussed.

Oxidized single-walled carbon nanotubes (swcns-cooh) as a new catalyst for the protection of carbonyl groups as hydrazones

Nano-materials are considered as suitable heterogeneous catalysts for many organic reactions. Herein oxidized carbon nanotube (SWCNTs-COOH) has been reported as a heterogeneous catalyst, for protection of carbonyl groups as hydrazones in EtOH at 80 C. The reactions proceed smoothly with good to excellent yields, and the SWCNTs-COOH used can be recycled.

Studies on the kinetics of tripropylammonium fluorochromate oxidation of some aromatic alcohols in non-aqueous media

The oxidation of benzyl alcohol (BnOH) and a few para-substituted benzyl alcohols by tripropylammonium fluorochromate (TriPAFC) in dimethylsulphoxide (DMSO) leads to the formation of corresponding aldehydes. The reaction is first order each in TriPAFC and the alcohols. The reaction is catalysed by hydrogen ions. The hydrogen ion dependence has the form: kobs = a + b[H +]. The oxidation of α α′-dideuterio benzyl alcohol exhibited a substantial primary kinetic isotope effect (kH/k D = 5.45 at 303 K). Oxidation of benzyl alcohol was studied in 19 different organic solvents. The solvent effect has been analysed using Kamlet's and Swain's multiparametric equation. A mechanism involving a hydride ion transfer via chromate ester is proposed.