Basic

CAS No.	499-78-5
Product Name	5-hydroxy-4-oxo-4H-pyran-2-carboxylic acid
Synonyms	4H-Pyran-2-carboxylic acid, 5-hydroxy-4-oxo-; Comenic acid; 5-Hydroxy-4-oxo-4H-pyran-2-carboxylic acid
Molecular Formula	C6H4O5
Molecular Weight	156.093

Physical property

Density	1.819g/cm3
Boiling point	420.7°C at 760 mmHg
Flash point	187.7°C
Refractive index	1.66