Product name: Dicyandiamide
Molecular formula: C2H4N4
Molecular weight: 84.08
CAS Number: 461-58-5
Property: White prismatic crystalline powder
Density (g/m 3 ,25/4℃): 1.400
Melting point (℃): 207~209
Solubility: slightly soluble in water and ethanol, soluble in acetone and liquid ammonia, insoluble in ether, benzene and chloroform
1. As a raw material for guanidine salts and melamines. By reacting dicyandiamide with acid, various guanidine salts can be produced. Benzomelamine diamine obtained by the reaction of dicyandiamide and benzonitrile is an intermediate for coatings, laminates and molding powder.
2. Used as dye fixing agent, dicyandiamide resin prepared by reaction of dicyandiamide and formaldehyde, can be used as dye fixing agent.
3. Dicyandiamide fertilizer and dicyandiamide compound fertilizer can control the activity of nitrifying bacteria, adjust the conversion rate of nitrogen fertilizer in the soil, reduce nitrogen loss, and improve fertilizer use efficiency.
4. As a fine chemical intermediate. In medicine, it is used to prepare guanidine nitrate, sulfa drugs, etc.; it is also used to prepare thiourea, nitrocellulose stabilizer, rubber vulcanization accelerator, steel surface hardener, artificial leather filler, adhesive, etc. The pharmaceutical intermediate 5-azacytosine can be obtained from the reaction of dicyandiamide and formic acid.
5. This product is also used as a rubber vulcanization accelerator. It is also used as raw material for preparing guanidine salt, dye fixing agent, dicyandiamide fertilizer, sulfonamide drugs, thiourea, nitrocellulose stabilizer, steel surface hardener.
6. Used as a latent curing agent for epoxy resin to prepare one-component epoxy adhesive, which can improve the mechanical and physical properties of the resin; the reference dosage is 4-12 parts by mass, and the pot life of 100g epoxy resin complex is 6-12 Months. Curing condition is 160℃/30min, heat distortion temperature is 125℃. Dicyandiamide resin prepared by reaction with formaldehyde can be used as direct dye fixing agent, post-treatment fixing agent after dyeing of cotton and silk; used as starch additive to improve its fluidity; used as nitrogen fertilizer additive to improve Fertilizer effect. It is also used to make raw materials for adhesives, melamine, medicines, pesticides, dyes, paints, explosives, synthetic detergents and guanidine salts. Also used as rubber vulcanization accelerator, steel surface hardener, paper flame retardant, anti-mold agent, etc.
Dangerous chemicals, pay attention to first aid and storage.
