▁of ▁b rom ine ▁is ▁hydro gen ▁b rom ide , ▁H Br . ▁It ▁is ▁mainly ▁used ▁in ▁the ▁production ▁of ▁in organ ic ▁b rom ides ▁and ▁alk yl ▁b rom ides , ▁and ▁as ▁a ▁catal yst ▁for ▁many ▁re actions ▁in ▁organ ic ▁chem istry . ▁Indust ri ally , ▁it ▁is ▁mainly ▁produced ▁by ▁the ▁reaction ▁of ▁hydro gen ▁gas ▁with ▁b rom ine ▁gas ▁at ▁ 2 0 0 – 4 0 0   ° C ▁with ▁a ▁plat in um ▁catal yst . ▁However , ▁reduction ▁of ▁b rom ine ▁with ▁red ▁ph osph orus ▁is ▁a ▁more ▁practical ▁way ▁to ▁produce ▁hydro gen ▁b rom ide ▁in ▁the ▁labor atory : ▁▁ 2 ▁P ▁+ ▁ 6 ▁H 2 O ▁+ ▁ 3 ▁Br 2 ▁→ ▁ 6 ▁H Br ▁+ ▁ 2 ▁H 3 PO 3 ▁ ▁H 3 PO 3 ▁+ ▁H 2 O ▁+ ▁Br 2 ▁→ ▁ 2 ▁H Br ▁+ ▁H 3 PO 4 ▁ ▁At ▁room ▁temperature , ▁hydro gen ▁b rom ide ▁is ▁a ▁colour less ▁gas , ▁like ▁all ▁the ▁hydro gen ▁hal ides ▁apart ▁from ▁hydro gen ▁flu or ide , ▁since ▁hydro gen ▁cannot ▁form ▁strong ▁hydro gen ▁b onds ▁to ▁the ▁large ▁and ▁only ▁m ild ly ▁electron eg ative ▁b rom ine ▁atom ; ▁however , ▁weak ▁hydro gen ▁bond ing ▁is ▁present ▁in ▁solid ▁cry st all ine ▁hydro gen ▁b rom ide ▁at ▁low ▁temper atures , ▁similar ▁to ▁the ▁hydro