... crystalline power; bitter taste, soluble in water and ethanol, sparingly soluble in chloroform and aether.[Melting Point]: 254-260°C, ... s a α-receptor agonists, which can contract nasal vas and reduce the exudation of vas, reduce swelling of nasal congestion ... of colds or allergic rhinitis, inflammatory nasal congestion, acute and chronic rhinitis[Usage and Dosage]: Droop nasal: using 0. 05-1% solution ...