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Registration Dossier
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EC number: 202-468-3 | CAS number: 95-96-5
Surface tension
Administrative data
Link to relevant study record(s)
- Endpoint:
- surface tension
- Type of information:
- read-across from supporting substance (structural analogue or surrogate)
- Adequacy of study:
- key study
- Justification for type of information:
- For details and justification of read-across please refer to the read-across report attached to IUCLID section 13.
- Reason / purpose for cross-reference:
- read-across source
- Key result
- Surface tension:
- 70.7 mN/m
- Temp.:
- 20 °C
- Conc.:
- 1 g/L
- Conclusions:
- In conclusion, it can be stated that under the conditions decribed 1 g/L of Lactic acid 93% has a surface tension value at 20 °C of 70.7 mN/m. Therefore, lactic acid 93% aq is considered as not surface active.
- Executive summary:
The OECD harmonized ring method (OECD TG 115) was used for the determination of the surface tension of Lactic acid 93% aq. The surface tension of a test solution at a concentration of 1 g/L and at 20 °C was 70.7 mN/m. According to this, the test substance is considered as not surface active.
This information is used in a read-across approach in the assessment of the target substance. For justification of read-across please refer to the attached read-across report (see IUCLID section 13).
- Endpoint:
- surface tension
- Data waiving:
- study scientifically not necessary / other information available
- Justification for data waiving:
- the study does not need to be conducted because surface activity is not a desired property of the material
Referenceopen allclose all
Description of key information
Dilactide is a mixture of D-lactide and L-lactide and all lactides undergo rapid hydrolysis, forming lactic acid. Lactic acid is not surface active, with a surface tension of 70.7 mN/m as shown in a GLP study conducted according to OECD TG 115. In addition and in accordance with REACH Regulation 1907/2006 Annex VII, section 7.6 a study with the target substance does not need to be conducted as surface activity is not a desired property.
Key value for chemical safety assessment
- Surface tension:
- 70.7
- in mN/m at 20°C and concentration in mg/L:
- 1 000
Additional information
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