Leading US industry body the American Conference of Governmental Industrial Hygienists (ACGIH) has changed its recommended threshold limit value for n-Propyl Bromide (nPB) from 10 ppm to just 0.1 ppm, amid concerns over health risks to workers.
In addition, nPB has also been added to the candidate list for inclusion in Annex XIV of European REACH regulations as a ‘Substance of Very High Concern’ (SVHC).