Registration Dossier
Registration Dossier
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EC number: 433-730-7 | CAS number: 23926-51-4 L-THREONINETHYLESTER
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:
- 2007.08.31 to 2007.11.29
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- other: GLP study performed in accordance with recognized test guideline.
- Reason / purpose for cross-reference:
- reference to same study
- Qualifier:
- according to guideline
- Guideline:
- EU Method A.5 (Surface Tension)
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 115 (Surface Tension of Aqueous Solutions)
- Version / remarks:
- (Platinium ring)
- Principles of method if other than guideline:
- NA
- GLP compliance:
- yes
- Type of method:
- OECD harmonised ring method
- Surface tension:
- 71.5 mN/m
- Temp.:
- 20 °C
- Conc.:
- 1 044 mg/L
- Conclusions:
- The surface tension at 20°C of a nominal 1 g/L solution of L-TEE in double-destilled water was determined to be 71.5 mN/m. L-TEE is not a surface active substance.
- Executive summary:
The surface tension of L-TEE was measured in accordance with Directive 92/69/EEC method A5 and OECD Guideline 115 (platinium ring).
The apparatus used, White Instruments Surface Tension (torsion) Balance, was calibrated using double-distilled water. The calibration factor was determined to be 1.000.
The mean surface tension was measured to be 71.5 mN/m for a test solution of 1 g/L at 20°C. As the value is significantly above 60 mN/m, correction using the Harkins-Jordan correction table was not necessary.
Reference
The apparatus was calibrated with double-distilled water. The surface tension of the water was measured to be 72.75 mN/m at 20°C and as the literature value for this temperature is 72.75 the calibration factor is 1.000.
The surface tension of L-TEE was calculated as a mean value of 5 readings. The mean surface tension was calculated to be 71.5 mN/m for a test solution of 1 g/L at 20°C. As the value is significantly above 60 mN/m, correction using the Harkins-Jordan correction table was not necessary.
Description of key information
The surface tension of L-TEE is 71.5 mN/m for a 1 g/L at 20°C.
Key value for chemical safety assessment
- Surface tension:
- 71.5
- in mN/m at 20°C and concentration in mg/L:
- 1 000
Additional information
The surface tension of L-TEE was measured in accordance to Directive 92/69/EEC Method A5 and OECD Guideline 115 (platinium ring).
The apparatus used, White Instruments Surface Tension (torsion) Balance, was calibrated using double-distilled water. The calibration factor was determined to be 1.000.
The mean surface tension was measured to be 71.5 mN/n for a test substance concentration of 1 g/L at 20°C. As the value is significantly above 60 mN/m, correction using the Harkins-Jordan correction table was not necessary.
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