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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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: 236-715-1 | CAS number: 13466-20-1
Endpoint summary
Administrative data
Description of key information
Additional information
Experimental data on the toxicity of barium bis(dihydrogen orthophosphate) (CAS 13466-20-1) are available for algae. The assessment of the toxicity to fish and Daphnia is therefore based on read-across to the structurally related substances barium, barium sulphate, barium chloride and barium chloride dehydrate. In accordance with Article 13 (1) of Regulation (EC) No 1907/2006, "information on intrinsic properties of substances may be generated by means other than tests, provided that the conditions set out in Annex XI are met.” In particular for aquatic toxicity, information shall be generated whenever possible by means other than vertebrate animal tests, which includes the use of information from structurally related substances (grouping or read-across). According to Annex XI, Item 1.5, of Regulation (EC) No 1907/2006 substances can be considered to be similar if their physicochemical, toxicological and ecotoxicological properties are likely to be similar or follow a regular pattern as a result of structural similarity.
The assumption of a similar environmental fate and toxicity profile of the target and source substances is based on the common metal ion or ion complex including a hydrated metal ion. The read across is based on the worst case assumption that the evaluated metal-containing compound shows the same hazards as the most water-soluble compounds. Further information on the read across substances is given in the read-across justification in chapter 13 of the IUCLID file.
The available data on the toxicity of source substances barium sulphate and barium chloride dihydrate to fish determined no acute effects. For Daphnia magna LC50(48 h) values of 32 mg Ba/L and 14.5 mg Ba/L were determined in two different studies on barium chloride dihydrate. In the available study on the toxicity of barium bis(dihydrogenorthophosphate) to algae an ErC50(72 h) of 6.07 mg/L based on the algal growth rate was determined (NOEC(72 h): 2.5 mg/L).
Data on the chronic toxicity are available for the read-across barium chloride dehydrate. Daphnia magna were exposed to Barium chloride dihydrate for 21 days in a semi-static test according to OECD guideline 211. Based on the reproduction an EC50 of 8.9 mg Ba/L was determined.
Barium bis(dihydrogen orthophosphate has no inhibitory effects on the respiration of activated sludge organisms.
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.
