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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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: 947-754-5 | CAS number: -
Water solubility
Administrative data
Link to relevant study record(s)
- Endpoint:
- water solubility
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Study period:
- 12.01.2017
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- guideline study
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 105 (Water Solubility)
- Deviations:
- yes
- Remarks:
- Because the metaphosphoric acid and the sodium metaphosphate in water undergo rapid hydrolysis, a titrimetric concentration determination is not possible. So the described method was adapted to the specific properties of the substance
- Principles of method if other than guideline:
- For the analytic determination of the water solubility of our product methods suggested in OECD norm (gas or liquid chromatography, titration, photometry, voltammetry) couldn`t be applied, because the substance gets rather fast hydrolysed in water. In the saturated solution a chemical equilibrium is dominated by the solubility of the sodium dihydrogen phosphate (850 g/L).
For the suggested methods the solution must be diluted. The chemical equilibrium is shifted by the thinner constantly, so that no exact and reliable results can be generated. By this fact every calibration is also impossible. That's why gravimetric method was selected as the more reliable method. - GLP compliance:
- no
- Type of method:
- flask method
- Specific details on test material used for the study:
- During inquiry (inquiry number: 06-2120767575-41-0000 ) the name was changed from „Reaction mass of metaphosphoric acid and trisodium trimetaphosphate” to “Amorphous condensation products of orthophosphoric acid and sodium carbonate (3-6 : 1)“.
- Water solubility:
- 1 724.552 g/L
- Temp.:
- 30 °C
- Remarks on result:
- other: average value
- Conclusions:
- The water solubility determined according to the amorphous condensation products of orthophosphoric acid and sodium carbonate (3-6 : 1) was 1724.552 g/L (average value).
Reference
Sample No. |
Mass, [g] |
Volume, [mL] |
Stirring time, [h] |
Residue on filter, [g] |
Temperature, [°C] |
Solubility, [g/L] |
1 |
86.5700 |
50 |
6.7 |
0.962 |
30 |
1712.160 |
2 |
154.4372 |
50 |
6.7 |
67.524 |
30 |
1738.264 |
3 |
244.6472 |
50 |
6.7 |
158.4856 |
30 |
1723.232 |
|
|
|
|
|
Average |
1724.552 |
|
|
|
|
|
SD |
13.10 |
Tab. 3 Water solubility
Description of key information
Key value for chemical safety assessment
- Water solubility:
- 1 724.552 g/L
- at the temperature of:
- 30 °C
Additional information
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.
