“Bromine” means the element having atomic number 35, which is a dark, heavy, reddish-brown liquid in its natural state, that is sometimes used in bathing facility water sanitation.

Source. (See Revision Note #1 at chapter heading for Env-Wq 1100) #8468, eff 11-1-05; ss by #10577, eff 5-1-14 (See Revision Note #2 at chapter heading for Env-Wq 1100); ss by #13198, eff 5-1-21 (see Revision Note #3 at chapter heading for Env-Wq 1100)