Aroclor 1254 (PCB mixture, 54% chlorine)

Safety Summary

Regulatory Status

Sources

These citations are the ones recorded for the human adult context.

• IARC Monographs Vol 107: Polychlorinated Biphenyls and Polybrominated Biphenyls — PCBs Group 1 (carcinogenic to humans); sufficient evidence from occupational cohort studies; NHL, melanoma, liver cancer; AhR and non-AhR mechanisms; Aroclor mixtures and dioxin-like congeners evaluated (2016) IARC_MONOGRAPH · 2016
• EFSA Scientific Opinion on the Risks to Human Health Related to the Presence of Non-Dioxin-Like Polychlorinated Biphenyls (NDL-PCBs) in Feed and Food — Indicator PCBs: PCB-28, 52, 101, 138, 153, 180; TWI based on hepatotoxicity and thyroid effects; fish as primary dietary source (2005, updated 2010) REGULATORY · 2010
• NTP 14th Report on Carcinogens — Polychlorinated Biphenyls REGULATORY · 2016
• § 1910.1000 Air contaminants. REGULATORY
• where to look PubChem: Toxicity section (CID 40470) PUBCHEM
• NIOSH Pocket Guide to Chemical Hazards - Chlorodiphenyl (54% chlorine) (11097-69-1) (reached from the NPG CAS index npgdcas.html, archived 2026-09-25) REGULATORY
• Stockholm Convention: All POPs (the Convention's own list of listed chemicals, Annexes A, B and C) REGULATORY
• Permissible Exposure Limits – OSHA Annotated Table Z-1 | Occupational Safety and Health Administration REGULATORY
• OEHHA Proposition 65 List of Carcinogens or Reproductive Toxicants (CSV, list date 31-Jul-26) REGULATORY

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