Chemical Diversion and Trafficking Act of 1987 - Amends the Controlled Substances Act to establish recordkeeping and reporting requirements for the manufacture, distribution, importation, and exportation of listed precursor and essential chemicals. Prohibits the distribution of such chemicals unless the recipient provides a certification of lawful use and proper identification.

Establishes exemptions from such requirements: (1) for the distribution of such chemicals between agents or employees within a single facility; (2) for the delivery of such chemicals to or by common carriers; (3) where the Attorney General determines that such requirements are not necessary for the enforcement of this Act; and (4) where products containing such chemicals are lawfully marketed under the Federal Food, Drug, and Cosmetic Act.

Establishes an import-export permit requirement for listed precursors and a declaration requirement for listed essential chemicals.

Includes as precursor chemicals: (1) N-Acetylanthranilic acid; (2) Anthranilic acid; (3) Ergotamine tartrate; (4) Ergonovine maleate; (5) Phenylacetic acid; (6) Ephedrine; (7) Pseudoephedrine; (8) Benzyl cyanide; (9) Benzyl chloride; and (10) Piperidine. Includes as essential chemicals: (1) Potassium permanganate; (2) Acetic anhydride; (3) Acetone; and (4) Ethyl ether. Establishes a mechanism and criteria for adding or deleting chemicals from such lists.

Prohibits the transfer of commercial tableting and encapsulating machines unless a certification of lawful use and proper identification are provided. Establishes reporting requirements for such transfers.

Establishes criminal penalties for the unlawful: (1) possession, manufacture, distribution, sale, importation, or exportation of a precursor or essential chemical; and (2) possession, manufacture, distribution, or importation of drug manufacturing equipment, tableting or encapsulating machines, and gelatin capsules.

Subjects all listed precursor and essential chemicals, drug manufacturing equipment, tableting and encapsulating machines, and gelatin capsules which have been imported, exported, manufactured, possessed, or distributed in violation of such Act (as well as all conveyances and equipment) to forfeiture to the United States.

Directs the Attorney General to maintain an active program, both domestic and international, to curtail the diversion of precursor and essential chemicals. Grants the Attorney General subpoena power with respect to precursor and essential chemicals.