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CAS 634-21-9

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Ethyl Red

Description:
Ethyl Red, with the CAS number 634-21-9, is an organic compound commonly used as a pH indicator in various applications. It appears as a red to reddish-brown powder and is soluble in alcohol and slightly soluble in water. Ethyl Red exhibits a distinct color change in response to pH variations, transitioning from red in acidic conditions to yellow in neutral to alkaline environments, typically around a pH range of 4.0 to 6.0. This property makes it valuable in titrations and as a visual indicator in laboratory settings. Ethyl Red is also utilized in the textile and food industries for dyeing purposes. Its chemical structure includes an azo group, which contributes to its color properties. While generally considered safe for use in controlled environments, appropriate safety measures should be taken to avoid inhalation or skin contact, as with many chemical substances. Overall, Ethyl Red serves as a versatile tool in both analytical chemistry and industrial applications.
Formula:C23H23IN2
InChI:InChI=1/C23H24N2/c1-3-24-16-15-19(21-10-6-8-12-23(21)24)17-20-14-13-18-9-5-7-11-22(18)25(20)4-2/h5-17,20H,3-4H2,1-2H3/b19-17+
InChI key:InChIKey=MYKATFBGLTVMQX-UHFFFAOYSA-M
SMILES:C(=C1C=2C(N(CC)C=C1)=CC=CC2)C3=[N+](CC)C4=C(C=C3)C=CC=C4.[I-]
Synonyms:
  • 1,1′-Diethyl-2,4′-cyanine iodide
  • 1-Ethyl-2-(1-ethyl-4-methenyl)quinolinylquinolinium iodide
  • 1-Ethyl-2-[(1-ethyl-4-(1H)quinolylidine)methyl]quinolinium iodide
  • 1-ethyl-2-[(E)-(1-ethylquinolin-4(1H)-ylidene)methyl]-1,2-dihydroquinoline
  • 1-ethyl-4-[(E)-(1-ethylquinolin-2(1H)-ylidene)methyl]quinolinium iodide
  • 1-ethyl-4-[(Z)-(1-ethylquinolin-2(1H)-ylidene)methyl]quinolinium
  • 2-{(E)-[4-(diethylamino)phenyl]diazenyl}benzoic acid
  • Decynium 24
  • Ethyl red
  • Ethyl red iodide
  • See more synonyms
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