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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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: 219-470-5 | CAS number: 2440-22-4
Toxicity to terrestrial plants
Administrative data
Link to relevant study record(s)
Description of key information
No toxic effects could be observed in a toxicity study with terrestrial plants.
Key value for chemical safety assessment
Additional information
The phytotoxicity of the test item 2-(2H-benzotriazol-2-yl)-p-cresol to six terrestrial plant species was determined according to OECD 208 (July 2006) in seedling emergence and seedling growth tests over a period of 21 days. For onion 50 % emergence of the control seedlings was reached after 14 days. Therefore, the test for onion was prolonged until day 28. Test systems comprised two monocotyledons (oats, Poaceae; onion, Liliaceae), and four dicotyledons (sugar beet, Amaranthaceae; rape, Brassicaceae; lettuce, Asteraceae; soybean, Fabaceae). The test was conducted with the test concentrations of 1000 - 500 - 250 - 125 - 62.5 mg/kg DW (factor 2). The test item was incorporated into the soil in which the seeds were sown. The test containers were bottom watered with nutrient solution as needed. Potential toxic effects of the test item were assessed on day 7, 14 and 21 (onion additionally on day 28) by visual observations (number of emerged seedlings and phytotoxic effects) and at test end by shoot height and shoot fresh weight determination. No test item related phytotoxic effects and mortality occurred during the test period for all plant species. The respective NOEC values are all≥1000 mg/kg dw.
The results of the control for all plant species met the required validity criteria. Therefore, the test is considered to be valid.
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.
