<p>Disclosed is a coating liquid which enables to obtain a polarizing film of a lyotropic liquid crystal compound having high single transmittance and high degree of polarization. Also disclosed is a polarizing film. Specifically disclosed is a coating liquid containing a lyotropic liquid crystal compound isolated by salting out and a solvent. This coating liquid is characterized by having a chloride ion concentration of not more than 3 × 10[4] ppm. Also specifically disclosed is a polarizing film which is obtained by flow casting the coating liquid into a thin film shape and aligning the lyotropic liquid crystal compound.</p>
