Pharaoh definition, meaning, English dictionary, synonym, see also 'Pharaoh ant',Pharaoh's ant',Pharaoh ant',Pharos', Reverso dictionary, English definition, English vocabulary Translation Context
The intake to this ventilation. system must be near the floor. (Chlorine as a gas is. 2.5 times heavier than air.) Exhaust Rate The exhaust system must be able to exchange the air. in the room every three to four minutes.
It produces dichloramine (HNCl2) gas, which reacts with water in your lungs to produce hypochlorous acid (HOCl), an irritant, not a deadly poison. Don't believe scaremongering about mustard gas and elemental chlorine.