Fatty acids, montan-wax, stearyl esters

Water solubility

Link to relevant study record(s)

Reference

Endpoint:

water solubility

Type of information:

experimental study

Adequacy of study:

key study

Study period:

11 Jan - 19 Mar 2018

Reliability:

2 (reliable with restrictions)

Rationale for reliability incl. deficiencies:

guideline study with acceptable restrictions

Remarks:

water solubility below quantification limit of HPLC

Qualifier:

according to guideline

Guideline:

OECD Guideline 105 (Water Solubility)

Version / remarks:

1995

Type of method:

flask method

Water solubility:

< 0.539 mg/L

Conc. based on:

test mat. (dissolved fraction)

Temp.:

20 °C

pH:

5.9

Calculation of water solubility
The water solubility of test item was regarded as < 0.539 mg/L because the test item concentration in the HPLC analytical sample was less than the limit of quantification.

Treatment of numerical values
Values were rounded off in accordance with Japanese Industrial Standards (JIS) Z 8401:1999 rule B. The water solubility was rounded off to 3 significant figures. The pH of test solutions was rounded off to one decimal place.

Results and discussion
Measurement results

Sample name	pH	Measured value [mg/L]	Average
a	5.9	< 0.539	< 0.539
b		< 0.539

 

Water solubility of test item (20 °C): < 0.539 mg/L

Discussion
The water solubility was less than the concentration calculated from the limit of quantification. However, the analytical method was judged to be valid because the average of recovery rates was larger than 90%. Therefore, it was concluded that test results were acceptable. 

Description of key information

< 0.539 mg/L at 20 °C (flask method, OECD 105)

Additional information

The water solubility was below the limit of quantification of the HPLC. However it was concluded that the test results were acceptable.