The Solubility of camellianin A (4',5,7-trihydroxyflavone; 5-O-[alpha-L-rhamnopyranosyl(1-4)-6-O-acetyl-beta-D-gluco-pyranoside]) in methanol, acetonitrile, acetone, and water from (283.2 to 313.2) K was Measured under atmospheric pressure. The solubility of camellianin A in these solvents increases with increasing temperature. The solubility data were correlated with the Apelblat equation.