Registration Dossier
Registration Dossier
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EC number: 943-024-5 | CAS number: -
Melting point / freezing point
Administrative data
Link to relevant study record(s)
Description of key information
The HYDROTOPES Category comprises the following 6 substances:
STS - Sodium toluene 4-sulphonate (CAS 657-84-1, EC 211-522-5)
SXS - Sodium (xylenes and 4-ethylbenzene) sulphonate (EC 701-037-1)
NH4XS - Ammonium (xylenes and 4-ethylbenzene) sulphonate (EC 943-024-5)
SCS - Sodium p-cumenesulphonate (CAS 15763-76-5, EC 239-854-6)
KCS - Potassium p-cumenesulphonate (CAS 164524-02-1, EC 629-764-9)
NH4CS - Ammonium p-cumenesulphonate (CAS 680972-33-2, EC 811-484-5)
The substances have the following melting point:
STS > 400 °C
SXS > 300 °C
NH4XS = 198 °C (Estimated)
SCS = 350 °C
KCS = 400 °C
NH4CS = 315 °C
For sake of completeness, the estimated melting point for the other Hydrotropes substances are:
STS = 228 °C
SXS = 233 °C
SCS = 236 °C
KCS = 236 °C
NH4CS = 200 °C
It needs to be considered that the hydrotropes experimental melting point values are higher than the estimated ones and it seems reasonable to consider the value of 300 °C as the key value for the chemical safety assessment.
Key value for chemical safety assessment
- Melting / freezing point at 101 325 Pa:
- 300 °C
Additional information
The minimun value resulting from an experimental test was taken for the risk assessment.
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.
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