Refined naphthalene is obtained from domestic crude, imported crude, and recently from petroleum cracking and hydrogenation. Table 34 shows the annual production and sales of refined naphthalene since 1916. The difference between the figures for the quantity produced and that sold represents the amount used by refiners in the manufacture of other products. TABLE 34.—_Refined naphthalene: United States production and sales, 1917-37_ ------+-------------------------------+-------------------------------- | Production | Sales Year +----------+-----------+--------+----------+-----------+--------- | Quantity | Value | Value | Quantity | Value | Value ------+----------+-----------+--------+----------+-----------+--------- | _1,000 | _1,000 | _Per | _1,000 | _1,000 | _Per | pounds_ | dollars_ | pound_ | pounds_ | dollars_ | pound_ 1917 | 35,343 | 2,334 | $0.07 | | | 1918 | 28,112 | 2,163 | .08 | | | 1919 | 17,625 | 1,161 | .07 | | | 1920 | 30,231 | 2,309 | .08 | | | 1921 | 13,554 | | | 13,183 | 741 | $0.056 1922 | 17,420 | | | 14,060 | 794 | .057 1923 | 28,184 | | | 21,871 | 1,271 | .058 1924 | 15,324 | | | 11,961 | 603 | .050 1925 | 17,581 | | | 12,508 | 610 | .049 1926 | 18,072 | | | 12,456 | 576 | .046 1927 | 21,233 | | | ([1]) | | 1928 | 24,992 | | | ([1]) | | 1929 | 31,144 | | | 21,120 | 1,027 | .049 1930 | 31,956 | | | 20,171 | 949 | .047 1931 | 34,959 | | | 21,260 | 829 | .039 1932 | 25,825 | | | 18,877 | 783 | .041 1933 | 42,708 | | | 28,658 | 1,065 | .037 1934 | 38,730 | | | 21,257 | 1,100 | .052 1935 | 46,564 | | | 28,761 | 1,212 | .042 1936 | 52,694 | | | 30,499 | 1,841 | .060 1937 | 52,194 | | | 29,657 | 1,893 | .060 ------+----------+-----------+--------+----------+-----------+--------- [1] Not publishable. Source: Compiled from annual reports of the Tariff Commission on dyes and other synthetic organic chemicals in the United States.