Barium

Safety Summary

Regulatory Status

Sources

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

• ATSDR: Toxicological Profile for Barium — Soluble vs Insoluble Salt Toxicity, K⁺ Channel Block, Cardiac Arrhythmia, Hypokalemia Mechanism, and Drinking Water Exposure REGULATORY · 2007
• US EPA IRIS: Barium — Oral Reference Dose, Drinking Water MCL (2 mg/L), Cardiovascular Endpoint, and Hypertension Evidence REGULATORY · 2005
• § 141.62 Maximum contaminant levels for inorganic contaminants. REGULATORY
• National Primary Drinking Water Regulations | US EPA REGULATORY
• 2018 Edition of the Drinking Water Standards and Health Advisories Tables (EPA 822-F-18-001) REGULATORY
• Barium and Compounds | CASRN 7440-39-3 | DTXSID8023894 | IRIS | US EPA, ORD REGULATORY
• Federal Contaminated Site Risk Assessment in Canada, Part II: Health Canada Toxicological Reference Values (TRVs) and Chemical-Specific Factors, Version 2.0 REGULATORY
• identity database ECHA CHEM, Download all substances: REACH registrations (ECHA's own list of REACH-registered substances) REGULATORY · 2026
• 29 CFR 1910.1000 Air contaminants (Tables Z-1, Z-2, Z-3) — eCFR full-text XML, 2026-09-22 REGULATORY
• OEHHA Proposition 65 List of Carcinogens or Reproductive Toxicants (CSV, list date 31-Jul-26) REGULATORY
• where to look Hazardous Substances Data Bank (HSDB), as recorded by PubChem (Experimental Properties, CID 5355457; where-to-look, not a source of this value) DATABASE · 2026

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