■NO, 



OH 



^5%,^^ NO2 



2,3-dinitrophenol 



OH 



NO, 



OH 



•NO, 



O2N y**^!*' 



NO, 



2, 4-dinitrophenol 2,6-dinUrophenol 



Fig, I, Nitro and 

 Chloro Phenols Used 

 in 'ilfood Preservation 



O21 



0"Na OH 



N-t^^^N-CH, CI VS^K^CI CI 



OH 



OH 



W^ ClA^jRci CI 



NO, CI 



'CI 



CI 



CH, 



CI 



sodium dinltro-o-cresolate pentachlorophenol 2,4, 5,6-tetrachlorophenol parachlorometacresol 



pM OH OH 



^^^ 



W^ 



CHo 



OH 



m-cresol 



OH 



CHt CH3 CH3 



y 



p-cresol 



OH 



fS^'^ri (S'**?^ f?*^Tl^^''^3 



•^^^ 



CH^ 



1,3,4-xylenol 1,4,5-xylenol 1 , 2,3-xylenol 



Figs. II & III. 

 Some Common Phenols 

 in Creosote 



a -naphthol 3 -naphthol 



2-hydroxyf I uorene 



.00 



OH 



2-phenanthrol 



4-hydroxydiphenyl 



0-2 



