science-softCon uv/vis+ spectra data base, www.uv-spectra.de, (C) science-softCon 2019 Substance: niacin Other Names: nicotinic acid Formula: C6H5NO2 CAS-No.: 59-67-6 Study: UV Absorption Spectra Authors: R.F. Evans, E.F.G. Herington, W. Kynaston Title: Determination of dissociation constants of the pyridine-monocarboxylic acids by ultra-violet photoelectric spectrophotometry Journal/Source: Trans. Faraday Soc., 49, 1284-1292, (1953); DOI: 10.1039/TF9534901284 Data: table, diagram Energy/Wavelength range: 230 - 285 nm Resolution: Temperature: 298 K Temperature dependence: no Pressure/Concentration: Phase: aqueous solution; sulfuric acid solution; sodium hydroxide solution pH: 1.6 - 13.0 Comments: The UV absorption spectra of aqueous solutions of the 3 pyridine-monocarboxylic acids have been measured over a wide pH range. Author to whom correspondence should be addressed: (e-mail address):