Registration Dossier
Registration Dossier
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EC number: 244-343-6 | CAS number: 21351-39-3
Toxicity to terrestrial plants
Administrative data
Link to relevant study record(s)
Description of key information
Low toxicity is predicted for Uronium hydrogen sulphate: the substance is used as a plant nutrient (N-source) in fertiliser, hence toxicity is unlikely.
Key value for chemical safety assessment
Additional information
Uronium hydrogen sulphate readily degrades to urea and sulfuric acid and/or sulfate ions in the environment:
- Low toxicity is predicted for urea: the substance is widely used as a plant nutrient (N-source) in fertiliser, hence toxicity is unlikely. The results of a study in soy bean plants confirm the low short-term toxicity of urea ;
- Sulfate ions are ubiquitous in the environment. Sulfur (as sulfate) is a major plant nutrient, and is essential for crop growth (calcium sulfate, as Gypsum, is used as an inorganic fertiliser to improve soil quality).
Therefore, the performance of short/long term toxicity tests on terrestrial plants is not scientifically justified.
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