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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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: 231-633-2 | CAS number: 7664-38-2
Toxicity to terrestrial plants
Administrative data
Link to relevant study record(s)
Description of key information
For this endpoint a waiver is proposed, and a supporting study (Reynolds, 1975) although Klimisch 3 scored, is presented.
Key value for chemical safety assessment
Additional information
According to Annex IX this endpoint does not need to be fulfilled if direct and indirect exposure of the soil compartment is unlikely. As phosphoric acid is extremely soluble in water, exposure to soil is deemed irrelevant.
In the available study by Reynolds (1975), the phosphoric acid concentration at which germination of lettuce is inhibited by 50% after 72h of exposure at 29°C is high, namely 16.4±2.45 g/L, inducing a pH as low as 1.3. This gives an indication that terrestrial plants may be able to manage pH values that are lower than normal environmental pH values. Therefore there is currently no need to investigate further the potential toxicity of phosphoric acid to 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.
