Four new legal OELs in the Netherlands on October 1, 2014

As of October 1, 2014, four Dutch legal limits as TWA 8 hours have been set for the substances Acetic acid, Calcium dihydroxide, Cresol and Picric acid.

  • Acetic acid (CAS# 64-19-7): Legal 25 mg/m3. SCOEL and ACGIH recommend to use also a STEL of 50 mg/m3 in controlling exposure.
  • Calcium dihydroxide (CAS# 1305-62-0): Legal 5 mg/m3. Health-based recommendations (SCOEL, DFG) are 1 mg/m3/8 hour and 2 to 4 mg/m3/15 minutes.
  • Cresol, all isomers (CAS# 1319-77-3): Legal 22 mg/m3 with Skin-notation. SCOEL and the Dutch Health Council don’t give a health-based recommendation. In Sweden OELs of 4,5 mg/m3/8 hour and 9 mg/m3/15 minutes are used. The recent REACH dossier has a DNEL of 0,9 mg/m3 to prevent local irritation.
  • Picric acid (CAS# 88-89-1): Legal 0,1 mg/m3. SCOEL and the Dutch Health Council don’t give a health-based recommendation. The substance is a skin sensitizer and has a weak genotoxic potential.


Although these new OELs ​​are useful for enforcement, we recommend that you take a more thorough approach to protect the health of workers and controlling exposure. The above information is derived from DOHSBase Compare, which uses​​ the hierarchy of OELs as presented at September 25, 2014 during the NVvA/ NVT-AT meeting on the future of OELV policies (, sheet 10).

Introducing UK-Xtend version

At the conference of the British Occupational Hygiene Society (BOHS) we will be introducing the first UK-version of DOHSBase Compare. Next to the Dutch (NL) en European (EU) versions. The UK-Xtend version uses a hierarchy in which the English Workplace Exposure Limits (WEL) will be dominant, followed by the European binding limits and health-based OEL’s of the Netherlands, Germany and USA.


Come an visit our booth at Occupational Hygiene 2013 from 23 – 25 April 2013 in the Hilton Deansgate Hotel, Manchester, UK. More information is on the website of BOHS: