Occupational Exposure Limits - 4th list - Indicative OELVs

The list is based on Council Directive 98/24/EC. Member States shall transpose this Directive by 21 August 2018 at the latest. Regarding the limit values introduced for nitrogen monoxide, nitrogen dioxide and carbon monoxide, Member States have until 21 August 2023 at the latest. The Directive adds limit values for 27 new chemical agents, and amends 6 existing ones established by earlier directives.


EC / List no: 203-453-4 CAS no: 107-02-8
Long-term Exposure Limit (LTEL) Values mg/m3
0.05 mg/m3
0.02 ppm
Short-term Exposure Limit (STEL) Values mg/m3
0.12 mg/m3
0.05 ppm
Miscellaneous Notes
2 Commission Directive (EU) 2017/164 of 31 January 2017 establishing a fourth list of indicative occupational exposure limit values pursuant to Council Directive 98/24/EC, and amending Commission Directives 91/322/EEC, 2000/39/EC and 2009/161/EU.

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