Humic acids and fulvic acids extracted from leonardite, reaction product with formaldehyde, potassium hydrogen sulfite, sodium hydrogen sulfite and potassium hydroxide

Surface tension

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

Test material information

Constituent 1

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