Registration Dossier

Ecotoxicological information

Toxicity to soil microorganisms

Currently viewing:

Administrative data

Link to relevant study record(s)

Description of key information

Data are waived.

Key value for chemical safety assessment

Additional information

Hydroxylammonium nitrate is manufactured and used in closed systems, and exposure of soil microorganisms to the substance is therefore very unlikely. In a moist soil environment, hydroxylammonium nitrate is expected to dissociate to [NH3OH]+ and [NO3]2-. The hydroxyl-ammonium ion is rapidly converted to hydroxylamine (free base). Hydroxylamine (free base) is stable in pure water in the absence of oxygen. However, the substance is a strong reduction agent and in the presence of oxygen, metals and other ions is rapidly transformed by abiotic processes (Hollemann-Wiberg, 1995). The ultimate transformation products are ammonium, nitrogen and N2O. The reaction is dependent on the pH. The more basic the environment, the more rapid the transformation. Reference Hollemann-Wiberg (1995): Lehrbuch der Anorganischen Chemie, de Gruyter, p. 702-704