Hexamethylenetetramine is made by two firms in New Jersey and by one in West Virginia. The raw materials utilized are formaldehyde and liquid or anhydrous ammonia. One company makes its own requirements of both, and another makes its own formaldehyde. Most of the production of hexamethylenetetramine is sold, marketed in barrels, drums, kegs, and cans. Production in other countries. Hexamethylenetetramine is made in a number of foreign countries, with Germany probably the leading foreign producer. Exports from Germany declined from 445,000 pounds in 1931 to 182,000 pounds in 1934, the decline being due chiefly to the expansion of production in countries previously large importers, particularly the United Kingdom, Japan, Czechoslovakia, and France. United States imports and exports. Imports of hexamethylenetetramine to the United States are shown in table 87. TABLE 87.—_Hexamethylenetetramine: United States imports for consumption, 1923-37_ -----------------+--------------+--------+-------+----------+---------- | | | | | Computed Calendar year | Rate of duty |Quantity| Value |Unit value|ad valorem | | | | | rate -----------------+--------------+--------+-------+----------+---------- | |_Pounds_| | | _Percent_ 1923 |25 percent | 47,373|$24,722| $0.522| 1924 | do | 3,826| 3,998| 1.045| 1925 | do | 20,771| 10,453| .503| 1926 | do | 23,481| 10,237| .436| 1927 | do | 3,417| 1,715| .502| 1928 | do | 5,898| 1,643| .279| 1929 | do | 5,562| 1,857| .334| 1930: | | | | | Jan. 1-June 17 | do | | | | June 18-Dec. 31| 11 cents | | | | | per pound | | | | 1931 | do | | | | 1932 | do | 1,103| 336| .305| 36.1 1933 | do | 1,103| 293| .266| 41.4 1934 | do | 612| 273| .446| 24.7 1935 | do | | | | 1936 | do | 7,496| 1,510| .201| 54.6 1937[1] | do | 10,895| 8,197| .200| 54.9 -----------------+--------------+--------+-------+----------+---------- [1] Preliminary. Source: Foreign Commerce and Navigation of the United States.