ure ▁may ▁lead ▁to ▁frequent ▁bron ch ial ▁in fe ctions ▁and ▁a ▁general ▁d eter ior ation ▁of ▁health . ▁As ▁a ▁strong ▁ox id ising ▁agent , ▁b rom ine ▁is ▁in compatible ▁with ▁most ▁organ ic ▁and ▁in organ ic ▁comp ounds . ▁Ca ution ▁is ▁required ▁when ▁transport ing ▁b rom ine ; ▁it ▁is ▁commonly ▁carried ▁in ▁steel ▁t anks ▁l ined ▁with ▁lead , ▁supported ▁by ▁strong ▁metal ▁frames . ▁The ▁Occ up ational ▁Saf ety ▁and ▁Health ▁Administration ▁( OS HA ) ▁of ▁the ▁United ▁States ▁has ▁set ▁a ▁perm iss ible ▁expos ure ▁limit ▁( PE L ) ▁for ▁b rom ine ▁at ▁a ▁time - weight ed ▁average ▁( T WA ) ▁of ▁ 0 . 1   pp m . ▁The ▁National ▁Institute ▁for ▁Occ up ational ▁Saf ety ▁and ▁Health ▁( NI OS H ) ▁has ▁set ▁a ▁recommended ▁expos ure ▁limit ▁( RE L ) ▁of ▁T WA ▁ 0 . 1   pp m ▁and ▁a ▁short - term ▁limit ▁of ▁ 0 . 3   pp m . ▁The ▁expos ure ▁to ▁b rom ine ▁immediately ▁dangerous ▁to ▁life ▁and ▁health ▁( ID L H ) ▁is ▁ 3   pp m . ▁B rom ine ▁is ▁class ified ▁as ▁an ▁extremely ▁ha z ard ous ▁subst ance ▁in ▁the ▁United ▁States ▁as ▁defined ▁in ▁Section ▁ 3 0 2 ▁of ▁the ▁U . S . ▁Emer gency ▁Pl anning ▁and ▁Community ▁Right - to - K now ▁Act