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 (http://www.tsac.nl/publicaties/Presentation_H3-statement_based_kick-off_levels_140925.pdf, sheet 10).