TABLES 



Number Page 



1 Levels of PCDDS in chlorinated phenols, and levels 



of 2,3,7,8-TCDD in 2,4,5-T acid and ester formulations 



(Harden 1983) 5 



2 Chemical and physical properties of 2,3,7,8-TCDn, also 



known as CAS Registry No. 1746-01-6 (NIOSH 1984) 6 



3 Concentrations of 2,3,7,8-TCDD measured in selected 

 organisms and nonbiological materials collected from 

 various locales. All values are in parts-per-tri 11 ion 



(ng/kg) fresh weight 10 



4 Effects of 2,3,7,8-TCDD on selected species of freshwater 

 organisms 19 



5 Acute toxicities of selected PCDD isomers to the guinea 



pig and the mouse (Kociba and Schwetz 1982a, b) 25 



6 Acute oral toxicities of 2,3,7,8-TCDD to mammals 25 



VI 



