Registration Dossier
Registration Dossier
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EC number: 236-751-8 | CAS number: 13473-90-0
Endpoint summary
Administrative data
Description of key information
Additional information
Based on the available data it is evident that the Al cation is considered the most toxic component following exposure to aluminium nitrate. For the purposes of risk assessment the following aquatic endpoints for aluminium are considered to provide a risk envelope approach for nitrate toxicity and therefore further consideration of nitrate is not required. The Al toxicity endpoints are summarised below:
Acute toxicity to fish: Data from the acute fish test provided an LC50 value of 0.105 mg/L based on dissolved aluminium. The lowest LC50 was provided by a semi-static test and therefore is considered to represent a worst case scenario.
Long term toxicity to fish:the NOEC of 0.013 mg Al/L obtained from the partial life-cycle test will be used for any further assessment.
Short term toxicity to invertebrates: An acuteDaphniatest was conducted and based on measured dissolved aluminium concentrations the lowest 48 -hour EC50 value was 0.33 mg/L.
Long term toxicity to invertebrates:critical toxicity value of 0.06 mg/L is considered sufficiently representative of the overall potential for adverse impacts in aquatic species.
Toxicity to aquatic algae and cyanobacteria:From a study withPseudokirchneriella subcapitatabased on time weighted mean measured aluminium concentrations the EC50 for growth rate was equal to 0.24 mg/L. The EC10 (considered to represent the NOEC) was equal to 0.051 mg/L.
Toxicity to microorganisms:the 180 min EC50 was considered to be greater than 200 mg Al/L.
The most sensitive species was considered to be algae
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