Registration Dossier
Registration Dossier
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: 701-028-2 | CAS number: -
Water solubility
Administrative data
Link to relevant study record(s)
Description of key information
Key value for chemical safety assessment
- Water solubility:
- 50 µg/L
- at the temperature of:
- 24 °C
Additional information
A water solubility was estimated using structure activity relationships models developed by the U.S. Environmental Protection Agency and
Experimental water solubility was determined by (Reimer 2001e). The f
lask method based on OECD Guideline 105 was used. TNPP was not detected in the saturated aqueous test solution. Therefore it is concluded that the water solubility of TNPP is below the detection limit of the substance. This detection limit was estimated to be 0.6 mg.L-1 at 24°C, the lowest TNPP concentration that produced a signal that is reliably distinguished from the background signal as determined from chromatograms of TNPP solutions. Atest employing a more sensitive analytical method for measuring TNPP established a new LOQ of 0.05 mg.L-1 (reference). Solubility measurements have been attempted using this new analytical method. Considering the first results of this experiment, it seems that water solubility is around or below this analytical limit (TNO, personal communication). This value was used in the October 2008 draft EU RAR for quantative assessment. The October 2008 draft RAR also included a sensitivity analysis on the range for water solubility between ~0.05and 3x10-16mg/L. The lower end of this range comes from modeled results using WSKOW and a range of log Kow values.
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.
