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Administrative data

Endpoint:
surface tension
Type of information:
experimental study
Adequacy of study:
key study
Reliability:
1 (reliable without restriction)

Data source

Reference
Reference Type:
study report
Title:
Unnamed
Year:
2014

Materials and methods

Test guideline
Qualifier:
according to guideline
Guideline:
OECD Guideline 115 (Surface Tension of Aqueous Solutions)
Deviations:
yes
Remarks:
see "Principles of method if other than guideline"
Principles of method if other than guideline:
The measurement vessel was not temperature-controlled, but temperature was within ±0.5° C during the experiment. The first ten measurements are reported as an average and corrected mean is done according to Huh and Mason.
GLP compliance:
no
Type of method:
OECD harmonised ring method

Test material

Constituent 1
Chemical structure
Reference substance name:
Humic acids and fulvic acids extracted from leonardite, reaction product with formaldehyde, potassium hydrogen sulfite, sodium hydrogen sulfite and potassium hydroxide
Molecular formula:
NA, macromolecular compound
IUPAC Name:
Humic acids and fulvic acids extracted from leonardite, reaction product with formaldehyde, potassium hydrogen sulfite, sodium hydrogen sulfite and potassium hydroxide
Test material form:
solid: particulate/powder
Remarks:
migrated information: powder

Results and discussion

Surface tension
Surface tension:
63 mN/m
Temp.:
25 °C
Conc.:
1 g/L

Applicant's summary and conclusion

Conclusions:
The surface tension was tested according to Method OECD TG 115 and determined to be 63 mN/m

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