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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.

The new ECHA CHEM database has been released by ECHA, and it now contains all REACH registration data. There are more details on the transition of ECHA's published data to ECHA CHEM here.

Diss Factsheets

Ecotoxicological information

Short-term toxicity to fish

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Administrative data

Link to relevant study record(s)

Description of key information

The endpoint is fulfilled using Weight of Evidence. An OECD 236 (FET) study of substance CAS 1271 -19 -8 gave an LC 50 of > 100 mg/L. It was demonstrated that CAS 1271 -19 -8 rapidly hydrolyzes (see 5.1.2).

No endpoints can be estimated with ECOSAR for metal substances, therefore only estimates are given for the organic parts of the chemical structure; Dicyclopentadiene (CAS 77 -73 -6) and Cyclopentadiene (CAS 542 -92 -7). 96h-LC50 are estimated to be 9.765 mg/L and 32.082 mg/L, respectively.

The estimated water solubility limit for the parent substance CAS 1271 -19 -8 is 2.6 mg/L. The FET result is in line with ECOSAR results for the hydrolysis byproducts.

Key value for chemical safety assessment

Additional information