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EC number: 701-247-3
CAS number: -
No experimental data are existing for the substances of the category. The Henry's law constant has been estimated with HENRYWIN v3.20, Bond method and the results are reported below:
BSA, CAS: 98-11-3; 2.55 e-004 Pa-m3/mole
TSA, CAS: 104-15-4; 2.81 e-004 Pa-m3/mole
XSA, CAS: 25321-41-9; 3.11E-004 Pa-m3/mole
CSA, CAS: 16066-35-6; 4.96 e-004 Pa-m3/mole
HBSA, CAS: 98-67-9; 2.65 e-008 Pa-m3/mole
The value of HBSA has been selected as representative key value of the category for the Chemical Safety Assessment
Henry's Law Constant characterizes the equilibrium of dilute concentrations of volatile, soluble substances between the gas and liquid phases. The aromatic sulphonic acids are not volatile and therefore a Henry's Law Constant is not feasible or relevant. An indicative value to complete the Chemical safety assessment has been calculated with EPIWIN 4.1. The value 0.0000000265 has been reported as key value for safety assessment, as conservative case.
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