118488-91-8

Basic information

• Product Name: p-chlorobenzenediazo methyl ether
• CAS NO: 118488-91-8
• Molecular Weight: 170.598
• Mol File: 118488-91-8.mol
• Article Data: 1

Chemical Properties

• CAS DataBase Reference: p-chlorobenzenediazo methyl ether(CAS DataBase Reference)
• NIST Chemistry Reference: p-chlorobenzenediazo methyl ether(118488-91-8)
• EPA Substance Registry System: p-chlorobenzenediazo methyl ether(118488-91-8)

Safety Data

• Hazardous Substances Data: 118488-91-8(Hazardous Substances Data)

Upstream product

• 111980-62-2 silver p-chlorobenzeneisodiazotate 
• 74-88-4 methyl iodide 

Downstream Products

• 10149-93-6 1-(4-chlorophenylazo)naphthalen-2-ol 

Relevant articles and documents

Kinetics and Mechanism of the Diazo Coupling Reaction of Arenediazo Methyl Ethers with β-Naphthol. Part 1. The Rates of Reaction in Nonaqueous Acid Solutions

Rate data are presented for the diazo coupling reaction of arenediazo methyl ethers with β-naphthol in solutions of dioxane, ethanol, and propan-2-ol acidified with hydrochloric acid at 25 deg C.Over range of HCl concentrations studied, pseudo-first-order rate constants were obtained and the reaction was found to be of first order in diazo ether.The relationship between the observed rate constants (kobs.) and hydrochloric acid concentration (cHCl) was found to be non-linear.Correlations of reaction rates with the Hammett acidity function (H0) and with the Hammett substituent constant (?x) conform with a mechanism in which the slow step is unimolecular decomposition of the protonated diazo ether, DEH(1+), to the coupling entity, the diazonium ion, D(1+), which instantly reacts with β-naphthol to give the azo dye.