Heptachlor Back Catalog number: 79167 Manufacturer: ABSOLUTE STANDARDS Availability: 3 weeks Price on request - + Recommended 92975 BTEX Standard Price on request 66074 2,4,4',5-Tetrachlorobiphenyl (74) Price on request 3520.10-100 Trichloronate, 100µg/mL, Solvent-c.hexane or ac.nitrile, Unit 1mL, # of units-1, Cas.no. 327-98-0 Price on request