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Physical & Chemical properties

Water solubility

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Administrative data

Endpoint:
water solubility
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:
EU Method A.6 (Water Solubility)
GLP compliance:
no
Type of method:
flask 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

Water solubility
Water solubility:
> 856 - < 945 g/L
Temp.:
20 °C
pH:
8
Remarks on result:
other: Average of the value for the 3 different flasks.

Any other information on results incl. tables

The individual analytical determinations, the pH of each sample, the average of the value for the different flasks which were in agreement, the test temperature:

Flask

Incubation time, 30 °C (h)

pH

Test temp (°C)

Absorbance of diluted samples, 280 nm (AU)

Concentration of diluted samples (g/L)

Concentration of saturated solution (g/L)

Avg ± st dev (g/L)

1

24

8.0

20

0.6106

0.0342

856

 

2

48

8.0

20

0.6855

0.0384

960

920 ± 56

3

72

8.0

20

0.6746

0.0378

945

 

Applicant's summary and conclusion

Conclusions:
The water solubility of the substance was determined using EU Method A.6, and determined to be 920 ± 56 g/L (average ± standard deviation).

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