The Urinary Excretion of Trittated Butylated Hydroxyanisole and Butylated Hydroxytoluene in the Rat

Abstract
The total radioactivity of rat urine after the administration of tritiated butylated hydroxyanisole and butylated hydroxytoluene has been measured. The results indicate that approximately 90 per cent of the dose of bha is excreted within four days. With bht, the total radioactivity excreted in the same period is equivalent to only 35 per cent of the dose, but some of the radioactivity of the labelled molecule is lost during metabolism and only an approximate estimation of the total urinary excretion is possible.