Hexavalent chromium (Cr(VI))

Safety Summary

Regulatory Status

Sources

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

• IARC Monographs Volume 100C: Arsenic, Metals, Fibres and Dusts — Chromium (VI) Compounds Group 1 (Lung Cancer, Nasal/Sinus Cancer), Nickel Compounds Group 1, Beryllium Group 1 (2012) REGULATORY · 2012
• US EPA: National Primary Drinking Water Regulations — Inorganic Chemicals (40 CFR 141.62); Total Chromium MCL 100 μg/L, Barium MCL 2 mg/L, Uranium MCL 30 μg/L, Selenium MCL 50 μg/L, Manganese SMCL 50 μg/L REGULATORY · 1992
• US EPA IRIS: Chromium VI — Inhalation Unit Risk (1998 Final; Toxicological Review updated 2024) REGULATORY · 1998
• CDC - NIOSH Pocket Guide to Chemical Hazards - Chromic acid and chromates REGULATORY
• Drinking Water Regulations Under Development or Review | US EPA REGULATORY
• Chromium in Drinking Water | US EPA REGULATORY
• Hexavalent Chromium (Chromium-6) | California State Water Resources Control Board REGULATORY
• IARC Monographs, List of Classifications REGULATORY · 2026
• Federal Contaminated Site Risk Assessment in Canada, Part II: Health Canada Toxicological Reference Values (TRVs) and Chemical-Specific Factors, Version 2.0 REGULATORY
• 29 CFR 1910.1026 Chromium (VI) — eCFR full-text XML, 2026-09-22 REGULATORY
• ECHA Annex VI to CLP: the unofficial Excel table (up to and including the 23rd ATP) REGULATORY
• Consolidated TEXT: 32004L0037 — EN — 08.04.2024 REGULATORY
• OEHHA Proposition 65 List of Carcinogens or Reproductive Toxicants (CSV, list date 31-Jul-26) REGULATORY

Same data as the API response, which is open and needs no key. The full per-record source list is available to authenticated callers.