Registration Dossier
Registration Dossier
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EC number: 296-473-8 | CAS number: 92704-41-1 The product of high temperature calcination (above 450°C (842°F)) of naturally occurring kaolin, a hydrated aluminum silicate, resulting in the evolution of water and the formation of new substances depending upon the calcination temperatures employed.
Long-term toxicity to aquatic invertebrates
Administrative data
Link to relevant study record(s)
Description of key information
The long-term toxicity testing with daphnids resulted in a NOEC(21d) of 1000 mg/L.
Key value for chemical safety assessment
Fresh water invertebrates
Fresh water invertebrates
- Effect concentration:
- 1 000 mg/L
Additional information
For long-term toxicity to daphnids, one study is available on a structurally related compound according to OECD Guideline 211.
This key study revealed a 21-d NOEC value for Daphnia magna of 1000 mg/L (nominal, eluate) with silicic acid, titanium salt (Magnapore 963) as test substance (Rudolf 2007).
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