Highly insoluble in an aqueous medium Prepared originally with ethanol Later found that sulfa was more in ethylene glycol which is a dihydroxy rather than monohydroxy ethane. Drug sold in the glycol solution but was still labeled elixir" Several patients died of acute kidney failure Body metabolizes glycol into oxalic acid and glycolic acid which in the kidney tubules Resulted in the Copland Bill(1938) formation of the Sulfanilamide disaster lead to toxicological studies