5-Hydroxy-4-oxo-4H-1-benzopyran-2-carboxylic acid
[CAS# 53878-47-0]

Identification

• Name: 5-Hydroxy-4-oxo-4H-1-benzopyran-2-carboxylic acid
• Synonyms: 5-Hydroxy-2-chromonecarboxylic acid; 5-Hydroxy-4-oxo-4H-chromene-2-carboxylic acid
• Molecular Formula: C₁₀H₆O₅
• Molecular Weight: 206.15
• CAS Registry Number: 53878-47-0
• EC Number: 854-108-5

Properties

• Solubility: Very slightly soluble (0.56 g/L) (25 ºC), Calc.^*
• Density: 1.639±0.06 g/cm³ (20 ºC 760 Torr), Calc.^*
• Melting point: 264 ºC^**

^* Calculated using Advanced Chemistry Development (ACD/Labs) Software V11.02 (©1994-2019 ACD/Labs)

^** Jarowski, Charles I.; Journal of the American Chemical Society 1949, V71, P944-6.

Safety Data

Hazard Classification

Hazard	Class	Category Code	Hazard Statement
Skin irritation	Skin Irrit.	2	H315
Acute toxicity	Acute Tox.	4	H302
Specific target organ toxicity - single exposure	STOT SE	3	H335
Eye irritation	Eye Irrit.	2A	H319