3375-23-3

Usage

Uses

Used in Textile Industry:
Sudan I was used as a coloring agent in the textile industry for dyeing fabrics, providing a vibrant red color to the materials. Its use in this industry was due to its colorfastness and ease of application.
Used in Plastics Industry:
In the plastics industry, Sudan I was employed as a coloring agent to impart a red hue to plastic products. Its application was driven by the need for coloration in various consumer goods and industrial materials.
Used in Food Industry (Historic):
Sudan I was historically used as a coloring agent in the food industry to enhance the appearance of certain products. However, due to its potential health risks, its use in food has been banned.
Used in Cosmetics Industry (Historic):
Similarly, in the cosmetics industry, Sudan I was once used to add color to various products. The ban on its use in cosmetics was implemented to mitigate the risk of adverse health effects associated with its application.

Upstream product

• 64-17-5 ethanol 
• 856211-86-4 1-benzoyloxy-2-(N'-phenyl-hydrazino)-naphthalene 
• 90-15-3 α-naphthol 
• 100-34-5 benzene diazonium chloride 
• 64-19-7 acetic acid 
• 524-42-5 1,2-naphthoquinone 
• 618-26-8 N-methyl-N-phenyl-hydrazine; sulfate 
• 16954-76-0 2-NON-Phenylazoxy-naphthalin 
• 71-43-2 benzene 
• 104354-87-2 Phenyl-phenylazo-methyl-hydroperoxide; compound with benzene 
• 109057-65-0 C₁₆H₁₂N₂O 
• 62-53-3 aniline 
• 7647-01-0 hydrogenchloride 
• 7732-18-5 water 

Downstream Products

• 62637-98-3 acetic acid-(2-phenylazo-[1]naphthyl ester) 
• 858021-92-8 benzoic acid-(2-phenylazo-[1]naphthyl ester) 
• 2036-45-5 1-methoxy-2-phenylazo-naphthalene 
• 858432-36-7 naphth[2,1-d]oxazol-2-yl-phenyl-amine 
• 605-69-6 1-hydroxy-2,4-dinitronaphthalene 
• 606-41-7 2-amino-1-naphthol 
• 5290-66-4 2,4-Bis-phenylazo-[1]naphthol 
• 91-22-5 quinoline 
• 119-65-3 isoquinoline 
• 95-13-6 1-indene 
• 71-43-2 benzene 
• 3178-03-8 1-methoxynaphthalen-2-amine 
• 163519-61-7 2-Amino-1-ethoxynaphthalin 
• 95419-64-0 (C₁₀H₆(O)N₂C₆H₅)2Cu 

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

Facile synthesis of 1-naphthol azo dyes with nano Sio2/Hio4 under solvent-free conditions

Nano-silica supported periodic acid (nano-SPIA) has been utilized as a heterogeneous reagent for a highly efficient and one pot synthesis of azo dyes based on 1-naphthol under solvent-free conditions at room temperature. This method has some advantages, the reaction workup is very easy and the catalyst can be easily separated from the reaction mixture and one-pot procedure. The related products have been obtained in good to excellent yields, high purity and short reaction times. The structures of the products have been characterized by several techniques using UV-Vis, FT-IR, 1H NMR, 13C NMR and mass spectra.

THE RADICAL COUPLING MECHANISM IN THE DIAZO COUPLING REACTION. MIGRATION VS. DECOMPOSITION OF PHENYLAZO RADICAL GENERATED FROM PHENYLAZO 1-NAPHTHYL ETHER IN THE SOLVENT CAGE

The thermal reaction of phenylazo 1-naphthyl ether generates a pair of phenylazo and naphthoxy radicals in the solvent cage, in which these radicals couple together at the aromatic carbon to give 4-phenylazo-1-naphthol and 2-phenylazo-1-naphthol.

BASE AND ACID CATALYZED REACTIONS OF PHENYLAZO 1-NAPHTHYL ETHER, A NEW REACTIVE DIAZOETHER. REPLY TO THE KEKULE'S MECHANISM FOR THE DIAZO COUPLING REACTION

The base and acid catalyzed reactions of phenylazo 1-naphthyl ether (5) yielded biphenyl (8) and 1-naphthol (9) as major products accompanied with 4-phenylazo- (6) and 2-phenylazo-1-naphthols (7).All of our observations do not support the Kekule's diazo coupling mechanism.

The Reaction of Diazonium Ion Generated from α-Azohydroperoxide with Phenols. The Isolation and Reaction of Diazoether Intermediate

The reaction of benzenediazonium ion generated from α-azohydroperoxide with 1-naphthol gave a diazoether which rearranged to 2- and 4-phenylazo-1-naphthols.

Interaction of Copper Complexes Derived from 1,2-Quinone Monooximes(2-Nitroso-phenols) with Amines

The reactions of 1,2-diaminoethane with the copper(II) complexes of 4-methyl- and 5-methoxy-1,2-benzoquinone 2-oxime involve deoxygenation of the ligand and reduction of the metal, and lead to 2-amino-4-methylphenol and 2-amino-7-methoxy-3H-phenoxazin-3-one, respectively.Reactions of the copper(II) complex of 1,2-naphthoquinone 2-oxime with 1,2-diaminoethane and with aniline occur in an analogous fashion, and lead to dibenzophenazine-5,12-diol and 2-amino-1,4-naphthoquinone 4-N-phenylimine, respectively.The copper(II) complex of 1,2-naphthoquinone 1-oxime reacts with aniline to give bis(1,4-dihydro-1-imino-4-phenylimino-2-naphtholato)bis(aniline)copper(II) and with 1,2-diaminoethane to give a complex mixture of products.The reactions are rationalized in terms of nitrene intermediacy.