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EC number: 203-313-2
CAS number: 105-60-2
With high probability epsilon-Caprolactam is acutely not harmful to aquatic invertebrates.
As for the fish, the key study on aquatic invertebrates was performed at
the Mitsubishi Chemical Saftey Institute Ltd, Japan on behalf of the
Ministry of Environment, Gouvernment of Japan. It is a static GLP study
according to OECD guideline 202 on Daphnia magna resulting in an EC50
(48h) >1000 mg/l. This result is supporte by a BASF-study (1988)
according to EPA guideline EG-1 with an EC50 (48h) >500 mg/l which
indicates a low hazard potential of epsilon-Caprolactam to aquatic
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