The product is an anionic surfactant . It has emulsifiability ,  form ability ,  permeability , detersive power and dispersion etc. Foam is plentiful , compatibility , biode-gration , hard water resisting are excellent . It is widely used in detergent, emulsify and polymeriation .    The index of physical and chemical , implement  GB/T 15963-1995 grade A index.