Gibberellic acid, crystal solid.Melting poin：223-225°C (decomposition) . Solubility： Water 5g / L, soluble in methanol, ethanol, acetone, slightly soluble in ether, ethyl acetate, insoluble in chloroform. Rapidly dissolved in water (potassium salt of 50g / L), Stability： Dry gibberellic acid stable at room temperature, in an aqueous alcohol solution or decomposition, loss of activity in lye, the case of thermal decomposition .