Registration Dossier
Registration Dossier
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EC number: 208-754-4 | CAS number: 540-72-7
Dissociation constant
Administrative data
Link to relevant study record(s)
Description of key information
The test substance is a salt and ionized at all pH values in the logarithm range of 1-14, thus the study on the determination of the dissociation constants in water is waived
Key value for chemical safety assessment
Additional information
The test substance is a sodium salt. The sodium part of the test substance is positively charged at all pH values in the logarithm range of 1-14. The thiocyanate part of the test substance is the conjugate base of thiocyanic acid. The latter is a strong acid and has a log pK, value of <1. It means that the thiocyanate part of the test substance is negatively charged at all pH values in the logarithm range of 1-14. . Since the test substance is salt and ionized at ail pH values in the logarithm range of 1-14, the study on the determination of the dissociation constants in water is not required. This is also supported by the measured conductivity value of 77.5 S x m-1.
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