Registration Dossier
Registration Dossier
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EC number: 202-905-8 | CAS number: 100-97-0
Endpoint summary
Administrative data
Description of key information
Additional information
Methenamine is highly water soluble in water (667 g/l) and soluble in alcohol and chloroform. In organic solvents the substance is insoluble. The calculated log Kow is -4.15 (Becher, 1996).
The vapour pressure of methenamine is 0.05 Pa at 20 °C. The Henry’s law constant of 1.051 * 10-5 Pa * m³/mol, calculated from the physical chemical properties as presented in IUCLID section 4, indicates that the substance is non-volatile from aqueous solutions (Lyman et al. 1982).
The adsorption and desorption behaviour of methenamine was not determined.
In accordance with column 2 of REACH Annex VIII, a Adsoprtions-/Desporptions-Screening test (required in section 9.3.1) does not need to be conducted as methenamine has a low potential for adsorption (log Pow = -2.18). A Koc of 0.073 L/Kg (KOCWIN v2.00) is calculated for completeness sake.
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.
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