2,2',3,3',4,5,6'-Heptachlorobiphenyl (174) Back Catalog number: 66174 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 71149 2,4,6-Trichlorophenoxyacetic acid Price on request 94027 2002Mix 1 WY06 Price on request 79647 Tetraethyllead Price on request