Octadecanoic acid, reaction products with triethylenetetramine, chloromethane-quaternized

Water solubility

Administrative data

Endpoint:

water solubility

Type of information:

experimental study

Adequacy of study:

key study

Study period:

2019

Reliability:

1 (reliable without restriction)

Data source

Reference

Reference Type:

study report

Title:

Unnamed

Year:

2019

Materials and methods

Test guideline

Qualifier:

according to guideline

Guideline:

OECD Guideline 105 (Water Solubility)

Type of method:

flask method

Test material

Test material information

1

Reference substance name:

Octadecanoic acid, reaction products with triethylenetetramine, chloromethane-quaternized

EC Number:

291-716-4

EC Name:

Octadecanoic acid, reaction products with triethylenetetramine, chloromethane-quaternized

Cas Number:

90459-71-5

Molecular formula:

Not applicable - UVCB substance

IUPAC Name:

Octadecanoic acid, reaction products with triethylenetetramine, chloromethane-quaternized

Test material form:

solid

Results and discussion

Water solubility

Water solubility:

33 g/L

Conc. based on:

test mat.

Temp.:

20 °C

pH:

7.95

Details on results:

An attempt was made to develop an HPLC method for the quantification of the test material. However due to the limited UV response and as no reference materials were available, this was not successful. An attempt was also made to perform the analysis using a UV spectrometer.

At the end of the shaking/equilibration time, all three saturated solutions gave a brown solution with a beige/light brown solid on the base of the conical flask, with some of the solid floating on the surface of the solution.

The full analysis was performed using the UV spectrometer method and the result obtained was significantly higher than expected at approximately 147 g/L. Due to the amount of test material remaining in the solution, this result did not appear to be scientifically sound.

Due to the lack of a UV response for the test material at anything other than very low wavelengths, it is thought that the analysis using either HPLC analysis with UV detection or the analysis using a UV spectrometer, is not providing accurate solubility data.

The final result has been reported as 33 g/L based on the visual estimation. It should however be taken into consideration that although at this concentration most of the sample is solubilized, the solution is slightly cloudy due to an undissolved minor component in the test material.

The test data from the formal testing using the UV spectrometer method is included below for information purposes only.

Applicant's summary and conclusion

Conclusions:

The final result has been reported as 33 g/L based on the visual estimation. It should however be taken into consideration that although at this concentration most of the sample is solubilized, the solution is slightly cloudy due to an undissolved minor component in the test material.