Pentachloronitrobenzene (PCNB) 
PCNB was poorly absorbed in the gut of rabbits and underwent little 
reduction to the corresponding aniline until after absorption. The aniline 
analog was recovered from urine. N-acetyl-S-pentachlorophenylcysteine was 
also found. There was also evidence that some pentachlorophenol formed 
directly from PCNB (111). 
Potatoes were grown in fields treated with PCNB. Analyses indicated 
that residues were mainly in the peel and that one metabolite was penta- 
chloroaniline. A second metabolite obtained from the potatoes and a third 
from the soil were not identified. Evidence indicated that the metabolites 
were formed before penetrating the potato's peel (559). 
Studies with fungi and microorganisms showed a rather widespread 
ability to convert PCNB to pentachloroaniline (258). 

Fungi Antinomycetes 
Aspergillus niger Norcardi sp. 
Fusarium solani f. phaseoli S. antibioticus 
Glomerella cingulata S. aureofaciens 
Helminthosporium victoriae S. cinnamoneus 
Mucor ramannianus S. griseus 
Myrothecium verrucaria S. lavendulae 
Penicillum frequentans S. venezuelae 
Trichoderma viride S. viridochromogenes 
2 OH 
Cle 1 Cr Cl 
——— 
El: 1 Gl. 1 
PCNB 
O 
-CH,.-cH-COH 
2eN 
‘Cr im ae 
C1 i CH 
1 
N-Acety1-S~-pentachloro- 
phenylcysteine Pentachloroaniline 
272 
