Lawsone
Chemical compound
Lawsone, also known as hennotannic acid, is a red-orange dye present in the leaves of the henna plant, for which it is named, as well as in the common walnut and water hyacinth. Humans have used henna extracts containing lawsone as hair and skin... Wikipedia
Solubility in water: almost insoluble
Formula: C10H6O3
Molar mass: 174.15 g/mol
Melting point: 195 to 196 °C (383 to 385 °F; 468 to 469 K) (decomposition)
PubChem CID: 6755
Related naphthoquinones: Juglone