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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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: 239-183-9 | CAS number: 15123-80-5
Short-term toxicity to fish
Administrative data
Link to relevant study record(s)
Description of key information
LC50 (96h) > 100 mg/L (nominal) for Danio rerio (OECD 203)
measured concentrations after 96 h: 5.64 mg Mo/L, 0.14 mg Al/L
Key value for chemical safety assessment
Additional information
Two studies were conducted with the test item aluminium molybdenum oxide. In a GLP guideline study by Muckle (2013) conducted according to OECD 203, Danio rerio were exposed to a nominal concentration of 100 mg/L in a static limit test. One day before the start of the test, a filtered test solution was prepared (24 h shaking, 0.45 µm filter). At the beginning and at the end of the test, the content of molybdenum and aluminium as components of the test item (10.1% Al and 53.9% Mo) was determined using a validated AAS-method. After 96 h, 5.64 mg Mo/L and 0.14 mg Al/L was measured. The obtained measured concentrations show that the test item was present in the solution and sufficient dissolution was achieved. The recoveries after 96 hours were 98% for Mo and 117% for Al of the start concentration. No mortalities or any abnormal behaviour were observed. Thus, the 96h-LC50 and NOEC were determined to be >100 mg/L and 100 mg/L, respectively, based on nominal concentrations.
This result is supported in a non-GLP study by Chen (2013) conducted according to a national guideline similar to OECD guideline 203. The test species was Gobiocyprus rarus, otherwise the test procedure was the same as in the study by Muckle (2013). Also in this study recoveries showed that the test item was present in the solution and sufficient dissolution was achieved. After 96 h, 13.5 mg Mo/L and 0.0394 mg Al/L was measured. No mortalities or any abnormal behaviour was observed. Consequently, the 96h-LC50 and NOEC are reported to be >100 mg/L and 100 mg/L, respectively.
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.
