Registration Dossier
Registration Dossier
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EC number: 215-582-3 | CAS number: 1333-22-8
Surface tension
Administrative data
Link to relevant study record(s)
- Endpoint:
- surface tension
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Study period:
- Experimental Phase: 17 December 1999 to 09 May 2000. Report Issued: 05 July 2000.
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- guideline study
- Qualifier:
- according to guideline
- Guideline:
- EU Method A.5 (Surface Tension)
- Deviations:
- yes
- Remarks:
- The surface tension result was not corrected using the Harkins-Jordan correction table as the correction is not applicable to the apparatus used.
- GLP compliance:
- yes (incl. QA statement)
- Type of method:
- ring method
- Key result
- Surface tension:
- ca. 72.2 mN/m
- Temp.:
- 20 °C
- Conc.:
- 0.003 g/L
- Conclusions:
- The surface tension of a <0.0029 g/l solution of Tribasic Copper Sulphate was determined to be 72.2 mN/m at 20.0 ± 0.5°C. The material is considered not to be surface-active.
- Executive summary:
Introduction
The surface tension of Tribasic Copper sulphate was determined based on Method A5 of Commission Directive 92/69/EEC.
Method
The determination was carried out using a White Electrical Institute interfacial tension balance.
Results and Conclusion
The surface tension of a <0.0029 g/l solution of Tribasic Copper Sulphate was determined to be 72.2 mN/m at 20.0 ± 0.5°C. The material is considered not to be surface-active.
Reference
Sample solution readings
The readings, times and temperatures for the sample solution are shown in the Table below:
| Time (mins) | Reading (mN/m) | Temperature (°C) |
| 60 | 69.0 | 20.0 |
| 70 | 72.0 | 20.0 |
| 80 | 72.0 | 20.0 |
| 90 | 72.0 | 20.0 |
| 100 | 72.0 | 20.0 |
| 110 | 72.0 | 20.0 |
Mean reading: 72.0 mN/m (using the last 5 readings)
Surface tension: reading x calibration factor
= 72.0 x 1.003
= 72.2 mN/m
Temperature: 20.0 ± 0.5 °C
Description of key information
The surface tension of a <0.0029 g/L solution of Tribasic Copper Sulphate was determined to be 72.2 mN/m at 20.0 ± 0.5°C. The material is considered not to be surface-active.
Key value for chemical safety assessment
- Surface tension:
- 72.2
- in mN/m at 20°C and concentration in mg/L:
- 2.9
Additional information
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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