Registration Dossier
Registration Dossier
Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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.
Use of this information is subject to copyright laws and may require the permission of the owner of the information, as described in the ECHA Legal Notice.
EC number: 700-736-9 | CAS number: 2149571-40-2
Toxicity to aquatic algae and cyanobacteria
Administrative data
Link to relevant study record(s)
Description of key information
72-Hour EC50 (growth rate) = 0.760 mg/L.
72-Hour EC50 (yield) = 0.810 mg/L.
NOEC = 0.415 mg/L.
Key value for chemical safety assessment
- EC50 for freshwater algae:
- 0.76 mg/L
- EC10 or NOEC for freshwater algae:
- 0.56 mg/L
Additional information
An Algal Growth Inhibition Assay was performed (Huntingdon Life Science, 2015) to assess the effect of MTF on aquatic plants. The study was conducted according to OECD test guideline 201 and EC test guideline C3 and in compliance with GLP.
Algal cultures, with an initial cell density of ca. 1 x 104/mL, were exposed to MTF dissolved in algal nutrient medium at nominal concentrations of 0.0470, 0.150, 0.479, 1.53 and 4.90 mg/L; the highest test level approximated the limit of aqueous solubility of the test substance. The cultures were incubated in an orbital incubator under continuous illumination at temperatures ranging from 22.6 to 23.5°C for 72 hours. Due to the volatile nature of the test material, the study was conducted in sealed vessels with no headspace.
The 72 -hour EC50 was 0.760 mg/L based on growth rate and 0.810 mg/L based on yield. The 72 -hour NOEC based on both growth rate and yield was 0.415 mg/L.
Information on Registered Substances comes from registration dossiers which have been assigned a registration number. The assignment of a registration number does however not guarantee that the information in the dossier is correct or that the dossier is compliant with Regulation (EC) No 1907/2006 (the REACH Regulation). This information has not been reviewed or verified by the Agency or any other authority. The content is subject to change without prior notice.
Reproduction or further distribution of this information may be subject to copyright protection. Use of the information without obtaining the permission from the owner(s) of the respective information might violate the rights of the owner.
