Dicyandiamide DCDA - Manufacturers, Suppliers and Exporters

The name Dicyandiamide (DCDA) was given to the dimer of cyanamide in 1862. The Dicyandiamide is an odorless, colorless, non-volatile powder with a monoclinic prismatic crystal structure. DCDA reacts with a variety of reagents. It is the simplest organic compound containing the C-N, C=N, and C=N groupings. Reaction may occur at one or more of these sites. DCDA is formed in almost quantitative yield by the dimerization of cyanamide in alkaline solution. The reaction occurs most readily at PH 8-10 by the addition of the anionic cyanamide species to the nitrile group. The product is a weaker acid than cyanamide, it is protonated immediately with the generation of a new cyanamide anion, which continues the process. DCDA is being employed in a wide variety of applications. It is utilized as an intermediate for a number of resins and organic nitrogen compounds, such as guanamides, biguanides, and uanidine. Previously one of the major use of DCDA was in the conversion to melamine which itself finds a wide variety of applications in chemical industry.

Standard

Appearance White crystal
Impurity precipitating test Acceptable
Purity % ≥ 99.5
Dry Loss % ≤ 0.30
Ash content % ≤ 0.05
Calcium content ppm ≤ 200

Specification : White crystal powder, density is 1.40g/cm3 (at 25º C). Melting point is 209-211C, it is soluble in water and alcohol, almost insoluble in ethylether and benzene, stable when dry, non-flammable.

Usage : Dicyadiamide DCDA is mainly used as a raw material for the manufacture of guanamine, gibuanide, various resins, trimeric cyanamide, fire retardant etc. Dicyadiamide DCDA is used as filler in leatherette and as additive in adhensive agent. Also used as material for making guanidine nitrate, sulfadiazine, virusin etc. In dyeing industry, it is used for making dye auxiliaries. It is used for making accelarator of vulcanizing in rubber industry and for making colour fixatives in printing and dyeing industry. For making hardensing agent on the surface of iron and steel. for making synergist in chemical fertilizer industry.