0000198 Sulphur Trioxide chemical_name:Sulphur Trioxide component_formula:SO3 component_remark:Gas component_concentration:< 0.1% pipe_and_fittings_hdpe_pe100_20: - pipe_and_fittings_hdpe_pe100_40: - pipe_and_fittings_hdpe_pe100_60: - aps_id:0000198