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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

1,2,4-Triazole is an organic solid, with a melting point of 120°C and a boiling point of 260°C at 1013 hPa. The vapour pressure values for 1,2,4-triazole were reported as 2.15E-4 kPa at 20 °C and 2.03E-2 Torr at 25°C (298 K), for measured and calculated values, respectively. 1,2,4-Triazole is very soluble in water, and has a calculated n-octanol water partition coefficient (log Kow) of -0.76. 1,2,4-Triazole is more dense than water with a reported density of 1.13 g/cm3 at 153°C. This compound is non-flammable, with an estimated value for the flash point of 139.1 ± 11.7°C. 1,2,4-Triazole does not posses oxidizing or explosive properties.