Registration Dossier
Registration Dossier
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EC number: 226-798-2 | CAS number: 5470-11-1
Endpoint summary
Administrative data
Description of key information
Additional information
Hydroxylammonium chloride bears a high water solubility of approx. 470 g/L and a rather low vapour pressure of 0.0021 Pa (at 20 °C). Therefore it is mainly expected to be present in water. The substance will dissociate in aqueous environments to hydroxylammonium and chloride ions. The adsorption properties of hydroxylammonium are similar to those of ammonium and their ionic forms are basically mobile in soil. Literature data report Kd values for ammonium between 0 and 6.5 L/Kg, which could be used as a worst case for hydroxylammonium chloride. However, the substance is not considered stable under environmental conditions and will be rapidly transform through biotic and abiotic processes to other nitrogen forms.
References:
Buss S.R., Herbert A.W., Morgan P., Thornton S.F., Smith J.W.N. 2004. A review of ammonium attenuation in soil and groundwater. Q. J. Eng. Geol. Hydrogeol. vol 37, 347–359
Ranjbar F. & Jalali M. 2013. Measuring and modeling ammonium adsorption by calcareous soils. Environ Monit Assess vol. 185, 3191–3199
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