Registration Dossier
Registration Dossier
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EC number: 244-787-0 | CAS number: 22113-87-7
Short-term toxicity to aquatic invertebrates
Administrative data
Link to relevant study record(s)
Description of key information
Results collected:
- methylamine nitrate: EC50 48 hr = 231 mg/l (QSAR method)
- ammonium nitrate: EC50 48 hr = 111-840 mg/l
- sodium nitrate: EC50 48 hr = 3581 mg/l
Key value for chemical safety assessment
Fresh water invertebrates
Fresh water invertebrates
- Effect concentration:
- 231 mg/L
Additional information
From the data collected, several things can be pointed out:
- first, the toxicity of methylamine nitrate seems to be moderate;
- then, the behaviour of ammonium nitrate in the aquatic compartment shows that the toxicity really depends on the pH and the dissociation in water, as the EC50 varies between 111 and 840 mg/l (same range as methylamine nitrate however); based on these observations, the same pattern can be attributed to methylammonium nitrate; moreover nitrate ions are expected to present no toxicity;
- the lack of toxicity presented by sodium nitrate confirms that nitrate ions are harmless to Daphnia magna.
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