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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

Toxicity to aquatic algae and cyanobacteria

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Administrative data

Link to relevant study record(s)

Description of key information

A reliable key study is available on algae: An OECD 201 study on Pseudokirchneriella subcapitata on the commercial product (60 % aqueous solution) gives an 96h-EC50 value of > 100 mg/l and a 96h-NOEC of = 31.6 mg/l . Trend in growth rate shows that EC50 of pure substance N-methylol methacrylamide will be within the range of 10-100 mg/l.

Key value for chemical safety assessment

EC50 for freshwater algae:
100 mg/L
EC10 or NOEC for marine water algae:
31.6 mg/L

Additional information

A reliable key study is available on algae: An OECD 201 study on Pseudokirchneriella subcapitata on the commercial product (60 % aqueous solution) gives an 96h-EC50 value of > 100 mg/l and a 96h-NOEC of = 31.6 mg/l.

Trend in growth rate shows that EC50 of pure substance N-methylol methacrylamide will be within the range of 10-100 mg/l.