Technical specifications: Mass fraction of methane chloride ≥ 99.99% Moisture ≤ 0.008% Acidity ≤ 0.0004% Mass fraction of evaporated residue ≤ 0.0005% Mass fraction of chloride ≤ 0.0005% the product serves for coating solvent, metal degreasing , aerosol, polyurethane foaming agent, safety photographic film.polycarbonate. It is an excellent solvent.