I also found this one, but it's EU specific: https://osha.europa.eu/en/legislation/directives/28

#TLVs #BEIs

Directive 91/322/EEC - indicative limit values | Safety and health at work EU-OSHA

This Directive is based on Directive 80/1107/EEC, which was repealed and replaced by Directive 98/24/EC. It sets out limit values for certain chemical substances in its Annex.

Chemical Exposure Limits

Recommended or mandatory occupational exposure limits (OELs) have been developed in many countries for airborne exposure to gases, vapours and particulates. The most widely used limits, called threshold limit values (TLVs), are those issued in the United States of America by the American Conference of Governmental Industrial Hygienists (ACGIH).