| http://www.w3.org/ns/prov#value | - nol, octanol and isooctanol, or the like, a method of conducting a dilute-hydrochloric-acid washing using the above-mentioned organic solvent, and a method of treating with adsorbents such as silica gel, alumina, activated carbon or the like using a solvent such as 1,2-dichloroethane, chloroform, methyl cellosolve, ethyl cellosolve, dimethylformamide, dimethylacetamide or the like.
|
