Registration Dossier

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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

Endpoint summary

Administrative data

Description of key information

Additional information

Short-term toxicity to aquatic invertebrates

A GLP-guideline study on 3,7,11-trimethyldodecyn-3-ol to investigate the toxicity on aquatic invertebrates were conducted on Daphnia magna in a static 48 h OECD 202 study (BASF SE 2016, 50E0025/05X055). Based on the geometric mean measured concentrations of the test item 3,7,11-trimethyldodecyn-3-ol, the 48 hour-EC50 forDaphnia magnawas 0.233 mg/L (95 % confidence limits: 0.210 – 0.266 mg/L).


Toxicity to aquatic algae and cyanobacteria

A GLP study according to OECD 201 (BASF 2016; 60E0025/05X056) was conducted with 3,7,11-trimethyldodecyn-3-ol. The test substance was found to inhibit the growth of the freshwater green alga Pseudokirchneriella subcapitata over the period of 72 hours. The EC50-value for inhibition of specific growth rate (ErC50) after 72 hours was 0.314 mg test item/L, the EC20- and EC10-values were determined to be 0.184 and 0.141 mg test item/L (geometric mean measured concentrations of the test item).


Toxicity to microorganisms

A GLP-guideline study (BASF 2005, OECD 209) on activated sludge respiration inhibition conducted on 3,7,11 -trimethyldodecyn-3-ol reveals an EC50 above 1000 mg/L.