Registration Dossier
Registration Dossier
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EC number: 200-848-3 | CAS number: 75-20-7
Endpoint summary
Administrative data
Description of key information
Three acute aquatic toxicity studies with technical calcium carbide are available. The 48-hr EC50of calcium carbide toDaphnia magnais 4.62 mg/L (OECD 202). The 72-hr NOErC and ErC50of calcium carbide to the algaScenedesmus subspicatusaccording to OECD guideline 201 is 5.6 mg/L and 46.5 mg/L, respectively. The LC50of calcium carbide in rainbow trout (Oncorhychnus mykiss) was determined to be > 50 mg/L under the conditions of OECD guideline 203. This was the highest test concentration, which was chosen based on the results of a pre-test. Although no effects in rainbow trout could be observed at 50 mg/L it is not recommended to repeat the test – primarily for animal welfare reasons – and as the most sensitive species is Daphnia, with considerably lower effect levels.
Additional information
Three acute aquatic toxicity studies with technical calcium carbide are available. The 48-hr EC50 of calcium carbide to Daphnia magna is 4.62 mg/L (OECD 202). The 72-hr NOErC and ErC50 of calcium carbide to the alga Scenedesmus subspicatus according to OECD guideline 201 is 5.6 mg/L and 46.5 mg/L, respectively. The LC50 of calcium carbide in rainbow trout (Oncorhychnus mykiss) was determined to be > 50 mg/L under the conditions of OECD guideline 203. This was the highest test concentration, which was chosen based on the results of a pre-test. Although no effects in rainbow trout could be observed at 50 mg/L it is not recommended to repeat the test – primarily for animal welfare reasons – and as the most sensitive species is Daphnia, with considerably lower effect levels.
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