it is impossible to avoid handling every known or suspected toxic substance, so it is wise to know what measures should be taken.Because the eating of food or the consumption of beverages in the laboratory is strictly forbidden and because one should never taste material in the laboratory,the possibility of poisoning by mouth is remote.Be more careful than your predecessors-the halluinogenic properties of LSD and all artifcial sweeteners were discovered by accident.The two most important measures to be taken then are avoiding skin contact by wearing the proper type of protective gloves and avoiding inhalation by working in a good exhausthood.A very thorugh treatment of ventilation in the organic laboratory is found in Microscale Organic Laboratory,by D.W.Mayo ,R.M.Pike,and S.S.Butcher.