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Abstract
U.S. glycerine production increased from 188 million pounds in 1952 to an estimated 370 million pounds in 1967. The doubling of output during this period is attributed to the sharp rise in synthetic glycerine production, since output of natural glycerine (a byproduct of fats and oils) remained relatively stable at about 150 million pounds per year. Growth in domestic and export demand for glycerine, with a limited ability of the industry to expand output, resulted in price increases of about one-third since 1963. Future increases in output required to meet expanding needs will continue to come from synthetic sources. Production of natural glycerine, a byproduct of soap manufacturing, is not expected to change much in coming years