Hexachlorobutadiene Back Catalog number: X9114 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 66127 3,3',4,5,5'-Pentachlorobiphenyl (127) Price on request 53311 Palladium / Magnesium Matrix Modifier Price on request 52050 Interference Standard 3 Price on request