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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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


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Administrative data

Link to relevant study record(s)

Description of key information

Water paste form:  NON EXPLOSIVE

Key value for chemical safety assessment

Additional information



Literature data available describe the substance as explosive if it is in dry form:

- Dust explosion possible if in powder or granular form, mixed with air. May explosively decompose on shock, friction, or concussion (International Program on Chemical Safety, 1996).

- Prolonged exposure to fire or heat may result in the spontaneous decomposition and heating with a resultant explosion. /Dinitrophenol solutions/ (Association of American Railroads, 2005)

- Forms explosive salts with alkalis and ammonia (Lewis, R.J. , 2004)

The compound is used in the form of a water paste to suppress its explosive properties.

Dinitrophenol, wetted, with not less than 15% water, by mass is classified with UN number 1320, class 4.1 classification code DT (solid desensitized explosive) according to ADR European Agreement concerning the International Carriage of Dangerous Goods by Road). -

Justification for classification or non-classification

The substance is marketed with a concentration of water > 15% wt, which suppresses its explosive properties and classification for explosive properties does not apply under Regulation 1272/2008