5099-02-5

Usage

General Description

1-Naphthalenol, 2-[(2-methoxyphenyl)azo]-, also known as Sudan I, is a synthetic organic compound that belongs to the azo dye family. It is commonly used as a coloring agent in various products such as textiles, plastic, and food. However, it is considered to be a potentially dangerous and carcinogenic substance, and its use in food products is highly regulated in many countries. Exposure to Sudan I has been associated with various health risks, including the potential for liver and kidney damage, as well as an increased risk of cancer. As a result, many regulatory bodies have imposed strict limits on the presence of Sudan I in food and other consumer products.

Upstream product

• 524-42-5 1,2-naphthoquinone 
• 18312-46-4 (2-methoxyphenyl)hydrazine 
• 90-15-3 α-naphthol 
• 7647-01-0 hydrogenchloride 
• 17356-93-3 2-methoxy-benzenediazonium 
• 90-04-0 2-methoxy-phenylamine 

Relevant academic research and scientific papers

Nano-Fe3O4 encapsulated-silica supported boron trifluoride as a novel heterogeneous solid acid for solvent-free synthesis of arylazo-1-naphthol derivatives

Nano-Fe3O4 encapsulated-silica supported boron trifluoride (Fe3O4@SiO2-BF3) as a new type of green heterogeneous solid acid was prepared by the immobilization of BF3·Et2O on the surface of Fe3O4@SiO2 core-shell nanoparticles and characterized by Fourier transform-infrared spectroscopy (FT-IR), X-ray diffraction (XRD), vibrating sample magnetometer (VSM), field emission-scanning electron microscope (FE-SEM), energy dispersive X-ray (EDS), and transmission electron microscope (TEM). Then, this super solid acid was used as an acidic reagent for the synthesis of aryl diazonium salts as a starting reactant, followed by its diazo coupling with 1-naphthol in a basic solvent-free medium at room temperature. The main advantages of this clean method were high yields, short reaction times, the possibility of performing it at room temperature, and no need of corrosive and toxic liquid acids and solvents. In addition, the long-term stability of aryl diazonium salts supported on Fe3O4@SiO2-BF3 magnetic nanoparticles (MNPs) at room temperature was one of the most important results of this procedure. This journal is