A colorless, corrosive, and liquefied gas which is broken down by water to hydrogen chloride and boric acid. Penetrating odor. A colorless, corrosive, and liquefied gas which is broken down by water to hydrogen chloride and boric acid. Penetrating odor. Forms white smoke in humid air.BCL3%99.999CL2PPM <0.1COCL2PPM <0.1CH4PPM <0.5O2PPM <10N2 PPM <20CO PPM <5CO2 PPM <5HCL PPM <50 Boron Trichloride ...