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EC number: 701-257-8 | CAS number: -
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Henry's Law constant
Administrative data
Link to relevant study record(s)
Description of key information
Sulfonic acids, C10 -21 -alkane, Ph esters is characterized by a calculated Henry's Law Constant between 0.040 and 0.061 Pa*m³/mole at a temperature of 20 °C (Currenta, 2010). According to Thomas, cited in the "Handbook of Chemical property Estimation Methods" (Lyman, 1980), the substance tends to partition in water and volatilisation rates are controlled by the slow diffusion through the air. Therefore, the substance has to be scored as being essentially nonvolatile from water.
Key value for chemical safety assessment
Additional information
The Henry’s law constant (HLC) is directly calculated as a ratio of the vapour pressure (VP, 2.94 E-04 Pa) to the water solubility (c, 2.2 mg/L), which are both experimentally determined at 20 °C. As the test item is a UVCB substance, no exact molecular weight can be determined. But for the estimation of the HLC, a molecular weight (MW) of 298.44 and 452.74 g/mol was used representing the compounds with lowest and the highest molecular mass.
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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