science-softCon uv/vis+ photochemistry database; www.photochemistry.org; (C) science-softCon 2019 Substance: croconic acid Other Names: 4,5-dihydroxycyclopentenetrione Formula: C5H2O5 CAS-No.: 488-86-8 PubChem: CID 546874 Study: UV absorption spectra, IR spectrum Authors: K. Yamada, N. Mizuno, Y. Hirata Title: Structure of croconic acid Journal/Source: Bull. Chem. Soc. Japan, 31 (5), 543-549, (1958); https://doi.org/10.1246/bcsj.31.543 Data: table, diagram Energy/Wavelength range: 240 - 400 nm Resolution: Temperature: 298 K Temperature dependence: no Pressure/Concentration: Phase: solution (water; 0.1 N NaOH; 0.1 N HCl; methanol; ethanol) pH: Comments: Author to whom correspondence should be addressed: (e-mail address):