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EC number: 701-028-2
CAS number: -
It is not possible to measure TNPP in water. A new study (VU 2021) which employed TNPP packed in a generator column (per OECD 105) could not generate a measurable concentration of TNPP in order to conduct a hydrolysis study of TNPP. This study used an analytical method for measuring TNPP with an LOQ of 0.05 mg.L-1 (same as prior work by TNO). This is the value used in the October 2008 draft EU RAR for quantitative assessment and has thus be used in the REACH registration. It is likely that the true water solubility limit of TNPP is much lower than this value. The October 2008 draft RAR included a sensitivity analysis for water solubility and found the range to be between 0.05 and 3x10-16 mg/L. The lower end of this range comes from modelled 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.
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