At 06:30 PM 7/24/2009, drmoonstone at aol.com wrote: >Another name...Mustard Gas. In the 70's they banned the use of flame >torch's for locating freon leaks...you guessed it....phosgene. > Mustard Gas is not Phosgene. Check out the Wikipedia entry for discussion. Marc msmall at aya.yale.edu Cha robh b`s fir gun ghr`s fir!