6638-21-7

Basic information

• Product Name: 1-((E)-((4-methylphenyl)imino)methyl)-2-naphthol
• Synonyms: 1-{[(4-methylphenyl)amino]methylidene}naphthalen-2(1H)-one
• CAS NO: 6638-21-7
• Molecular Formula: C₁₈H₁₅NO
• Molecular Weight: 261.3178
• Mol File: 6638-21-7.mol
• Article Data: 9

Chemical Properties

• Boiling Point: 467.3°C at 760 mmHg
• Flash Point: 179.8°C
• Density: 1.263g/cm³
• Vapor Pressure: 6.61E-09mmHg at 25°C
• Refractive Index: 1.735
• CAS DataBase Reference: 1-((E)-((4-methylphenyl)imino)methyl)-2-naphthol(CAS DataBase Reference)
• NIST Chemistry Reference: 1-((E)-((4-methylphenyl)imino)methyl)-2-naphthol(6638-21-7)
• EPA Substance Registry System: 1-((E)-((4-methylphenyl)imino)methyl)-2-naphthol(6638-21-7)

Safety Data

• Hazardous Substances Data: 6638-21-7(Hazardous Substances Data)

Usage

General Description

1-((E)-((4-methylphenyl)imino)methyl)-2-naphthol, also known as Sudan Red 7B, is a chemical compound commonly used as a dye in the manufacturing of plastics, textiles, and rubber. It is a bright red powder that is insoluble in water but soluble in organic solvents such as acetone and ethanol. Sudan Red 7B is classified as a carcinogen and a potential mutagen, which means it has the ability to cause cancer and genetic mutations in living organisms. As a result, its use in food and food packaging has been banned in many countries due to its potential health risks. Additionally, it has been linked to negative environmental impacts, such as water pollution and harm to aquatic life.

Upstream product

• 50-00-0 formaldehyd 
• 106-49-0 p-toluidine 
• 135-19-3 β-naphthol 
• 708-06-5 2-hydroxynaphthalene-1-carbaldehyde 
• 6638-23-9 1-<(4-Methylphenylamino)methyl>-2-naphthol 
• 6638-95-5 1-(phenylaminomethyl)naphthalen-2-ol 
• 99-99-0 1-methyl-4-nitrobenzene 

Downstream Products

• 64468-31-1 N-(4-Methylphenyl)-3-oxo-3H-naphtho<2,1-b>pyran-2-carboxamid 
• 6638-23-9 1-<(4-Methylphenylamino)methyl>-2-naphthol 
• 225-11-6 benz[a]acridine 
• 132358-01-1 VO(2-hydroxy-1-naphthalidene-4'-methylaniline)2 
• 105236-73-5 Sn(NCS)2(C₆H₄C₄H₂(OH)CHNC₆H₄CH₃)2 
• 105236-75-7 SnBr₂(C₆H₄C₄H₂(OH)CHNC₆H₄CH₃)2 
• 105236-74-6 SnCl₂(C₆H₄C₄H₂(OH)CHNC₆H₄CH₃)2 
• 933984-30-6 bis[1-[(4'-Me-phenylimino)methyl]-2-naphtholato]cobalt(II) complex 
• 143481-58-7 SnCl₄(HOC₁₀H₆CHNC₆H₄CH₃)2 
• 859148-37-1 RuCl₂((C₆H₅)3As)2(C₁₀H₆OCHNC₆H₄CH₃) 
• 859148-38-2 RuBr₂((C₆H₅)3As)2(C₁₀H₆OCHNC₆H₄CH₃) 
• 1075705-75-7 [ReO₃(CH₃)(OC₁₀H₆CHNHC₆H₄CH₃)] 

Relevant articles and documents

Half-Sandwich Iridium Complexes for the One-Pot Synthesis of Amides: Preparation, Structure, and Diverse Catalytic Activity

Several types of air-stable N,O-coordinate half-sandwich iridium complexes containing Schiff base ligands with the general formula [Cp*IrClL] were synthesized in good yields. These stable iridium complexes displayed a good catalytic efficiency in amide synthesis. A variety of amides with different substituents were obtained in a one-pot procedure with excellent yields and high selectivities through the amidation of aldehydes with NH2OHHCl and nitrile hydration under the catalysis of complexes 1-4. The excellent and diverse catalytic activity, mild conditions, broad substance scope, and environmentally friendly solvent make this system potentially applicable in industrial production. Half-sandwich iridium complexes 1-4 were characterized by NMR, elemental analysis, and IR techniques. Molecular structures of complexes 2 and 3 were confirmed by single-crystal X-ray analysis.

Syntheses, characterization and catalytic activities of half-sandwich ruthenium complexes with naphthalene-based Schiff base ligands

Four ruthenium(II) p-cymene complexes with naphthalene-based Schiff base ligands [Ru(p-cymene)LCl] (2a–2d) have been synthesized and characterized. The half-sandwich ruthenium complexes were characterized by 1H and 13C NMR spectra, elemental analyses, and infrared spectrometry. The molecular structures of 2a, 2b, and 2c were confirmed by single-crystal X-ray diffraction. Furthermore, these half-sandwich ruthenium complexes are highly active catalysts for the hydrogenation of nitroarenes to anilines using NaBH4 as the reducing agent in ethanol at room temperature.

Synthesis, characterization and antimicrobial activity of mixed schiff base ligand complexes of Co(II), Ni(II), Cu(II) and Zn(II)

The mixed ligand complexes of Co(II), Ni(II), Cu(II) and Zn(II) with Schiff bases N-(2-hydroxy-1-naphthylidene)-4-methylaniline (L1H) and N-(2-hydroxybenzylidene)-2,3-dimethylaniline (L2H) have been synthesized and characterized. The