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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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: 284-325-5 | CAS number: 84852-15-3
Toxicity to soil microorganisms
Administrative data
Link to relevant study record(s)
Description of key information
One study was available for the soil microbial endpoint (Annex IX, Endpoint 9.4.2 Effects on Soil Microorganisms). The study by Trocme et al., (1989) presents a long-term carbon transformation test by soil microorganisms in the presence of nonylphenol where a NOEC of 100 mg nonylphenol/kg can be derived.
Key value for chemical safety assessment
- Long-term EC10 or NOEC for soil microorganisms:
- 100 mg/kg soil dw
Additional information
There was one reliable toxicity study relating to soil microorganisms where a 40-day test based on microbial respiration by measuring carbon transformation provided a NOEC of 100 mg nonylphenol/kg (Trocme et al., 1989). This is the Key Study although this result is the only one available. There are some deviations from the standard OECD 217 Guideline but these are not thought to undermine the study. In contrast to the standard test protocol, the test duration is far greater (at 40 days) which would traditionally lead to a more sensitive toxicity value. The fact that there was no evidence of toxicity at 100 mg/kg when compared to the control, suggests that this study is more protective of this endpoint than a standard OECD study. This study indicates that soil microorganisms are less sensitive to nonylphenol than soil invertebrates but may be more sensitive than terrestrial plants.
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.
