Registration Dossier
Registration Dossier
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EC number: 291-367-8 | CAS number: 90387-90-9
Short-term toxicity to aquatic invertebrates
Administrative data
Link to relevant study record(s)
Description of key information
Graphite, acid-treated is an inorganic solid, consisting of natural graphite and variable amounts of either intercalated nitric acid or acetic acid. Due to its physico-chemical properties, i.e. absence of lipophilic functional groups which would enhance the lipid (fat) solubilisation properties and therefore facilitate the uptake into the organism, graphite itself can be regarded as not bioaccumulative and harmless.
The intercalated acid (nitric or acetic acid) and the intercalated ions (nitrite/nitrate, acetate) are partially leached out by water. The acids dissociate into the environmentally ubiquitous nitrite, nitrate and hydronium ions.
In the course of assessing the aquatic toxicity of graphite, acid treated an acute toxicity testing in rainbow trout (see IUCLID point 6.1.2 of the dossier) has been carried out. Based on the negative testing results the NOEC level has been determined to be more than 100 mg/L.
Taking into account the ubiquitous nature of the intercalated ions and the negative result of the testing to the acute toxicity to fish it can be concluded that further testing on aquatic invertebrates can be omitted.
Key value for chemical safety assessment
Additional information
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