Metformin Impurities

English Synonyms

epicuredicy15;epicuredicy7;Guanidine, cyano-;Guanidine-1-carbonitrile;NCN=C(NH2)2;N-Cyanoguanidine;Pyroset DO;xb2879b

Dicyandiamide Properties

Dicyandiamide Uses and Synthesis Methods

Cyanamide Dimer

Dicyandiamide, abbreviated as DICY or DCD, is a dimer of cyanamide and a cyano derivative of guanidine. It is a white crystalline powder. Soluble in water, alcohol, ethylene glycol and dimethylformamide, almost insoluble in ether and benzene. Not flammable. Stable when dry.

Dicyandiamide curing agent belongs to the earliest type of heat-curing latent curing agent. It is solid at room temperature and insoluble in epoxy resin. It is dispersed into the epoxy resin in the form of fine particles and then heated to react. Once heated to near the melting point When, it begins to dissolve and react rapidly to solidify.

Harm

When dicyandiamide is heated, it decomposes to generate toxic gases containing ammonia; it reacts sharply with strong oxidants, such as ammonium nitrate, creating the risk of fire and explosion; it reacts with acids to generate toxic gases containing hydrogen cyanide .

Use

It is a raw material for the production of melamine. It is also an intermediate for medicines and dyes. It is used in medicine to prepare guanidine nitrate, sulfa drugs, etc. It can also be used to prepare thiourea, guanidine, nitrocellulose stabilizer, rubber vulcanization accelerator, steel surface hardener, printing and dyeing fixing agent, artificial leather filler and adhesive, etc. Electronic-grade dicyandiamide has become the main development direction in the future and is mainly used in the production of epoxy resin copper-clad laminates. Its excellent insulation properties are used as a curing agent in the glass cloth dipping process of copper-clad laminates.