(1) As a raw material for guanidine salts and melamine diamines. Various guanidine salts can be produced by reacting dicyandiamide with acid. The phenyltrimeric cyanamide obtained from the reaction of dicyandiamide and phenylnitrile is an intermediate in coatings, laminates, and molding powders.

(2) Used as a dye fixing agent, the dicyandiamide resin produced by the reaction of dicyandiamide and formaldehyde can be used as a dye fixing agent.

(3) Dicyandiamide fertilizer and dicyandiamide compound fertilizer can control the activity of nitrifying bacteria, regulate the conversion rate of nitrogen fertilizer in soil, reduce nitrogen loss, and improve fertilizer utilization efficiency.

(4) As an intermediate in fine chemical industry. Used in medicine to produce guanidine nitrate, sulfonamide drugs, etc; It is also used to produce thiourea, nitrocellulose stabilizer, rubber vulcanization promoter, steel surface hardening agent, artificial leather filler, adhesive, etc. The pharmaceutical intermediate 5-azacytosine can be obtained by reacting dicyandiamide with formic acid.

(5) Testing cobalt, nickel, copper, and palladium, organic synthesis, nitrocellulose stabilizer, hardener, descaling agent, vulcanization promoter, resin synthesis.