text: i have use pyridine in my practical of msc hae itdangerous to me sexually/?only work for 3 houre.?   here is some information that may assist you...  http://www.atsdr.cdc.gov/tfacts52.html  http://ptcl.chem.ox.ac.uk/msds/py/pyridine.html  http://www.cdc.gov/niosh/idlh/110861.html