2,4,6,8-tetramethyl-1,3,5,7-tetraoxacyclooctane

Surface tension

Link to relevant study record(s)

Reference

Endpoint:

surface tension

Type of information:

experimental study

Adequacy of study:

key study

Study period:

February - April 2001

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 conection table as the correction is not applicable to the apparatus used. Details see "details on methods"

GLP compliance:

yes (incl. QA statement)

Type of method:

OECD harmonised ring method

Specific details on test material used for the study:

- Sponsor's identification: META® Metaldehyde
- Description: white shiny powder
- Chemical name: metaldehyde
- Date received: 2 January 2001
- Storage conditions: room temperature, in the dark

Key result

Surface tension:

71.9 mN/m

Temp.:

19.5 °C

Conc.:

0.204 g/L

The test material is considered not to be a surface-active material.

Conclusions:

The surface tension was found to be 71.9 mN/m (0.204 g/l solution) at 19.5 +/- 0.5°C. The test material is considered not to be a surface-active material.

Executive summary:

The determination of the surface tension was carried out using a White Electrical Institute interfacial tension balance and a procedure based on the ISO 304 ring method. With the exception of the following deviation, the experimental procedure used complied with that specified in EU test method A.5. The surface tension result was not corrected using the Harkins-Jordan conection table as the correction is not applicable to the apparatus used. Once calibrated, the balance and ring assembly used in this test give a direct reading for surface tension that is within the required accuracy (+/- 0.5 mN/m); this is as a result of the reduced ring dimensions. The surface tension was found to be 71.9 mN/m (0.204 g/l solution) at 19.5 +/- 0.5°C, using a ring method based on ISO 304, Eu-method A.5. The test material is considered not to be a surface-active material.

Description of key information

The determination of the surface tension was carried out using a White Electrical Institute interfacial tension balance and a procedure based on the ISO 304 ring method. With the exception of the following deviation, the experimental procedure used complied with that specified in EU test method A.5. The surface tension result was not corrected using the Harkins-Jordan conection table as the correction is not applicable to the apparatus used. Once calibrated, the balance and ring assembly used in this test give a direct reading for surface tension that is within the required accuracy (+/- 0.5 mN/m); this is as a result of the reduced ring dimensions. The surface tension was found to be 71.9 mN/m (0.204 g/l solution) at 19.5 +/- 0.5°C, using a ring method based on ISO 304, Eu-method A.5. The test material is considered not to be a surface-active material.

Key value for chemical safety assessment

Surface tension:

71.9

in mN/m at 20°C and concentration in mg/L:

204

Additional information

Source: GLP-report