Registration Dossier

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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.

The new ECHA CHEM database has been released by ECHA, and it now contains all REACH registration data. There are more details on the transition of ECHA's published data to ECHA CHEM here.

Diss Factsheets

Physical & Chemical properties

Endpoint summary

Administrative data

Description of key information

Additional information

Dicyandiamide is white, odourless powder. It is, therefore, solid at room temperature with a melting point of 210 degrees C and a relative density of 1.44 g/cm³. It decomposes before boiling. The substance as manufactured has a median particle size of 1.65 µm, with approximately 90% of the mass smaller than 4 µm. The vapour pressure of Dicyandiamide is negligibly low (0.0000085 Pa at 20 °C). 

Dicyandiamide is a hydrophilic compound (log Kow -1) and highly soluble in water (32 g/L at 20 °C); as such, the solubility in organic solvents / fat is not considered a relevant property of this substance as it will essentially be insoluble in non-polar solvents. Dicyandiamide is not surface active.

Dicyandiamide is non flammable, and is not susceptible to auto-ignition. It is, as most organic substance are, susceptible to dust explosions when diminuted finely enough, but is not explosive. It is not oxidizing.