Registration Dossier
Registration Dossier
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EC number: 210-288-1 | CAS number: 611-99-4
Surface tension
Administrative data
Link to relevant study record(s)
- Endpoint:
- surface tension
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- guideline study
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 115 (Surface Tension of Aqueous Solutions)
- GLP compliance:
- no
- Type of method:
- plate method
- Remarks:
- A tensiometer conforming with GLP (K11HRX, Fa. Krüss) was used. Usage following SOP 118 009 60 in the current edition, and referring to ISO 304 (1985). The Plate A plate of roughened Pt/Ir, qualified together with the tensiometer, was used.
- Specific details on test material used for the study:
- Name 4,4-Dihydroxybenzophenone
Batch no. 20111104
Composition 4,4-Dihydroxybenzophenone
CAS No. 611-99-4
Purity ≥ 99.5% purity - Key result
- Surface tension:
- 70.45 mN/m
- Temp.:
- 19.9 °C
- Conc.:
- 304 mg/L
- Conclusions:
- The surface tension of an aqueous solution of a single concentration (90% saturation of 4,4-Dihydroxybenzophenone) was determined as 70.45 ± 0.11 mN/m at 19.9 °C.
One measurement was performed for verification (after 72 minutes). No significant changes and thus no significant dependence on time were observed.
As these values were higher than 60 mN/m, 4,4-Dihydroxybenzophenone was classified as 'not surface active'.
The surface tension of the negative control lay within the accepted range
The concentration of the test substance in the 90% saturated test solution was determined to be 304 mg test substance/L (based on analysis of dissolved organic carbon in the test solution). The saturated solution was obtained from an aqueous solution pre-pared with 1g/L of test substance by shaking for 72 hours.
Reference
Description of key information
The surface tension of an aqueous solution of a single concentration (90% saturation of 4,4-Dihydroxybenzophenone) was determined as 70.45 ± 0.11 mN/m at 19.9 °C.
As these values were higher than 60 mN/m, 4,4-Dihydroxybenzophenone was classified as 'not surface active'.
The concentration of the test substance in the 90% saturated test solution was determined to be 304 mg test substance/L (based on analysis of dissolved organic carbon in the test solution). The saturated solution was obtained from an aqueous solution prepared with 1g/L of test substance by shaking for 72 hours.
Key value for chemical safety assessment
- Surface tension:
- 70.45
- in mN/m at 20°C and concentration in mg/L:
- 304
Additional information
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