Quinaldine Red, CAS No. 117-92-0

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117-92-0

Catalog No. EBD47691

CAS 117-92-0

Name Quinaldine Red

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Basic Information

Synonyms: 2-[4-(Dimethylamino)styryl]-1-ethylquinoliniumiodide QuinaldineRed 2-(p-dimethylaminophenylethylene)quinolineethiodide 2-[2-[4-(dimethylamino)phenyl]ethenyl]-1-ethyl-quinoliniuiodide quinalinium,2-[2-(4-dimethylamino)phenyl]ethenyl-1-ethyl-,iodide (2-[2-(4-dimethylamino)-phenyl]-ethenyl)-1-ethylquinoliniumiodide 2-(4-dimethylaminostyryl)-1-ethylquinoliniumiodide 2-p-dimethylaminostyrylquinolineethiodide a-(p-dimethylaminophenylethylene)quinolineethiodide 2-(-(4-dimethylamino)styryl)-1-ethylquinoliniumiodide 2-[2-(4-Dimethylamino-phenyl)-vinyl]-1-ethyl-quinolinium 2-{(E)-2-[4-(Dimethylamino)phenyl]vinyl}-1-ethylquinolinium 204-221-5 2-{2-[4-(dimethylamino)phenyl]ethenyl}-1-ethylquinolinium 2-{(E)-2-[4-(dimethylamino)phenyl]ethenyl}-1-ethylquinoliniumiodide

Molecular Formula: C21H23IN2

Molecular Weight: 430.33

MDL Number: MFCD00011968

Categories: Materials Chemistry > Optoelectronic and Organic Semiconductor Materials > Dye Precursors Synthetic Chemistry > Analytical Chemistry Reagents > Indicators

Product Description:

Quinaphthalone, commonly known as Quinaphthalone Red, is an organic compound belonging to the class of quinophthalone dyes. It is a synthetic pigment characterized by a fused quinoline-phthalone structure, which imparts its distinctive color properties. Its primary industrial application is as a precursor or intermediate in the synthesis of high-performance pigments, particularly for plastics, coatings, and inks. These pigments are valued for their good thermal stability, lightfastness, and vivid red to violet shades. Furthermore, due to its pH-dependent color change, it has historically been used as a pH indicator in analytical chemistry, transitioning from yellow in acidic solutions to violet in alkaline solutions. While not a mainstream active pharmaceutical ingredient or a common building block in medicinal chemistry, its core application lies firmly in the materials science sector for colorant production, with a secondary, more specialized role as a chemical indicator.

Physical Properties

Melting Point: 240 °C

Solubility: almost insoluble

Analytical Data

Appearance: greenish-black or dark blue to grey powder