science-softCon uv/vis+ photochemistry database;	www.photochemistry.org; (C) science-softCon 2021

Substance: kojic acid					Other Names: 5-hydroxy-2-(hydroxymethyl)-4H-pyran-4-one

Formula: C6H6O4						CAS-No.: 501-30-4	PubChem: CID 3840

Study: UV absorption spectrum

                
Authors: M.S. Piantavini, A.G. Goncalves, A.C.L.B. Trindade, M.D. Noseda, A.L.R. Merce, A.E.H. Machado, R. Pontarolo

Title: Elucidation of the electronic spectrum changes of KA-Al(3+) complex by potentiometric titration, FTIR, 13C RMN and quantum mechanics

Journal/Source: Quim. Nova, 40 (7), 774-780, (2017); http://dx.doi.org/10.21577/0100-4042.20170059


Data: table, diagram

Energy/Wavelength range: 200 - 350 nm

Resolution: 

Temperature: 298 K

Temperature dependence: no

Pressure/Concentration: 1.06 x 10-4 mol/L

Phase: solution (methanol; acidic solution of 0.2 % aluminum chloride)

pH:


Comments: The UV spectrum of kojic acid in methanolic solution presents maximum absorption bands at 215 and 269 nm.