ECHA has provided Occupational Exposure Limit (OEL) values for most commonly used nitrosamines

ECHA has lately published draft of scientific report on proposed OELs for most commonly used nitrosamines,
d29f9768-026d-a6de-4aee-eac0d34f332b (

There is now time for consultation and to give comments to the published report.
Occupational exposure limits – Consultations on OEL recommendation - ECHA (

In their conclusion, the authors compared the derived limit values and recommended the
following OELs:
• 0.2 μg/m3 for NDEA and NPip
• 0.4 μg/m3 for NPyr
• 0.5 μg/m3 for NDMA, NMEA, NDPA
• 1 μg/m3 for NMor
• 2.5 μg/m3 for NDBA.