maintained at 172 +_ 2'C (338'F). Sulfur (2.0 g, 0.0625 mole) is then round-bottom 3-necked flask equipped with an air condenser and a added slowly over a 30-min period. The copper strip test (170'C for 1 min) is run on the reaction mixture at one hour intervals until a grade magnetic stirrer. The flask is placed in an oil bath and the temperature The fatty esters (18.0 g, approx. 0.04 mole) are placed in a 100-ml 3 or lower level is reached.
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