Registration Dossier
Registration Dossier
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EC number: 629-764-9 | CAS number: 164524-02-1
Surface tension
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)
All the category members except KCS were tested for surface tension and the values are:
STS =70.8 mN/m (20 °C, 1 g/l)
SXS = 71mN/m (20 °C, 90 % vol)
NH4XS = 67.7 mN/m (20 °C, 1 g/l)
SCS = 64.3 mN/m (25 °C, 0.4 g/l)
NH4CS = 60.4 mN/m (20°C 1 g/l)
Key value for chemical safety assessment
- Surface tension:
- 60.4
- in mN/m at 20°C and concentration in mg/L:
- 1 000
Additional information
The lowest value was selected for the risk assessment.
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