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EC number: 200-087-7
CAS number: 51-28-5
2,4 -dinitrophenol is a solid organic
substance, with yellow colour and sweetish odour. It can be manufacture
as platelets, leaflets or crystals
(The Merk Index, 1989).
It has a density of 1.683 g/cm^3 ,
a vapour pressure of 1.49 x 10 ^-5 mmHg at 18°C (Mabey WR, Smith
JH, Podoll RT, et al., 1981), and it is soluble in water (5600
mg/L at 18°C and 2790 at 20°C from Schwarzernbach, RP., et al, 1988).
It shows solubility on different
types of solvent (g/100 g solvent): 15.55 in ethyl acetate; 35.90
in acetone, 5.39 in chloroform; 20.05 in pyridine; 0.423 in carbon
tetrachloride; 6.36 in toluene; it is soluble in alcohol and benzene
(The Merk Index, 1989).
Its melting point is defined in the
range of 112 -114°C and the boiling point cannot be defined
because it sublimes when carefully heated (The Merk Index, 1989).
The substance in its pasty form, which is the only one marketed, with
a water content > 15% is considered not explosive, but as a solid
desensitised explosive. For this reason this wetted form permits to
suppress its explosive properties (solid desensitised explosive)
2,4 -dinitrophenol has a dissociation
constant of 4.09 (temperature not specified) and appear to be stable
in acid solution (Pearce PJ, Simkins RJJ., 1968).
Its octanol-water partition coefficient Log
Kow is 1.54, that suggest that 2,4 -dinitrophenol has a low ability
to bioaccumulation in aquatic organisms.
Information on Registered Substances comes from registration dossiers which have been assigned a registration number. The assignment of a registration number does however not guarantee that the information in the dossier is correct or that the dossier is compliant with Regulation (EC) No 1907/2006 (the REACH Regulation). This information has not been reviewed or verified by the Agency or any other authority. The content is subject to change without prior notice.Reproduction or further distribution of this information may be subject to copyright protection. Use of the information without obtaining the permission from the owner(s) of the respective information might violate the rights of the owner.
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