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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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: 237-714-9 | CAS number: 13939-25-8
Toxicity to microorganisms
Administrative data
Link to relevant study record(s)
Description of key information
NOEC (3h) ≥1000mg/L, (nominal), read across
Key value for chemical safety assessment
- EC50 for microorganisms:
- 1 000 mg/L
- EC10 or NOEC for microorganisms:
- 1 000 mg/L
Additional information
Experimental on the toxicity of aluminium dihydrogen triphosphate to microorganisms are not available. Therefore read across from the comparable substance aluminium orthophosphate (CAS 7784-30-7) was deemed acceptable for assessment. Both substances are inorganic orthophosphates containing a phosphate anion and an aluminium cation.
The phosphate anion (PO43 -) is ubiquitous in natural waters and is an essential micronutrient for many organisms. Orthophosphates are not anticipated with direct acute or long-term adverse effects on aqueous or terrestrial organisms. Therefore the toxicity of the above substances will be predominantly determined by the presence of the Al3+cation. On this basis the ASRI study was conducted on aluminium orthophosphate. This approach is considered to be reliable and justified and no further testing for aluminium dihydrogen triphosphate is required.
A study was performed to assess the effect of aluminium orthophosphate on the respiration of activated sewage sludge. The method followed that described in the OECD Guidelines for Testing of Chemicals (1984) No 209, Method C.11 of Commission Regulation (EC) No. 440/2008 and US EPA Draft Ecological Effects Test Guidelines OPPTS 850.6800. Activated sewage sludge was exposed to an aqueous dispersion of the test item at concentrations of 10, 32, 100, 320 and 1000 mg/L for a period of 3 hours at a temperature of 21 ± 1°C with the addition of a synthetic sewage as a respiratory substrate. The rate of respiration was determined after 3 hours contact and compared to data for the control and a reference item, 3,5-dichlorophenol. The effect of the test item on the respiration of activated sewage sludge gave a 3-Hour EC50of greater than 1000 mg/L. The No Observed Effect Concentration (NOEC) after 3 hours exposure was ≥1000mg/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.
