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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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: 700-903-6 | CAS number: 255830-15-0
Water solubility
Administrative data
Link to relevant study record(s)
- Endpoint:
- water solubility
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Reliability:
- 2 (reliable with restrictions)
- Rationale for reliability incl. deficiencies:
- guideline study without detailed documentation
- Remarks:
- The study was conducted in accordance with OECD 105 but full details are not available.
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 105 (Water Solubility)
- Deviations:
- not specified
- GLP compliance:
- not specified
- Type of method:
- flask method
- Key result
- Water solubility:
- > 450 g/L
- Temp.:
- 20 °C
- Remarks on result:
- other: A pH of 10 was assumed for the test substance.
- Details on results:
- The substance is completely soluble in water.
- Conclusions:
- A measured water solubility of >450 g/L at 20°C was determined for ATMP-N-Oxide-5K using a relevant test method, the result is considered to be reliable.
Reference
Test |
Phosphorus content (g/L) |
Shaking time (hr) |
1 |
>34 |
24 |
2 |
>34 |
48 |
Description of key information
Water solubility (ATMP-N-Oxide-5K): The substance is very soluble in water and has a water solubility value of >450 g/L at 20°C
Key value for chemical safety assessment
- Water solubility:
- 450 g/L
- at the temperature of:
- 20 °C
Additional information
A measured water solubility of >450 g/L at 20°C was determined for the aqueous solution of ATMP-N-Oxide-5K using the flask method in accordance with OECD Test Guideline 105. The result is considered to be reliable and is selected as key study. Although the supplier's literature is less detailed than laboratory study reports, given the range of values expected for these types of substance, the uncertainty is not significant in respect of environmental exposure or human health exposure modelling. Typical concentrations of aqueous solutions in commercial supply provides weight of evidence of high loadings.
Supporting water solubilities of 560, 490 g/L and 'soluble in water' were obtained for the potassium salt of ATMP-N-Oxide from supplier's data.
Phosphonate salts are highly hydrophilic and extremely water soluble. Free acids are less soluble than the salts; however, aqueous solutions in excess of 1% active acid material can be prepared. The aqueous solutions of sodium and potassium salts are miscible in water.
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.
