Registration Dossier

Physical & Chemical properties

Water solubility

Currently viewing:

Administrative data

Link to relevant study record(s)

Reference
Endpoint:
water solubility
Type of information:
migrated information: read-across based on grouping of substances (category approach)
Adequacy of study:
key study
Study period:
1999-01-20 to 1999-04-30
Reliability:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
other: see 'Remark'
Remarks:
GLP - Guideline study, tested with the source substance 131459-39-7. In accordance to the ECHA guidance document "Practical guide 6: How to report read-across and categories (March 2010)", the reliability was changed from RL1 to RL2 to reflect the fact that this study was conducted on a read-across substance.
Qualifier:
according to
Guideline:
EU Method A.6 (Water Solubility)
GLP compliance:
yes (incl. certificate)
Remarks:
Department of Health of the Government of the United Kingdom
Type of method:
flask method
Water solubility:
< 0.353 mg/L
Temp.:
20 °C
pH:
5.6 - 5.9
Remarks on result:
other: Reported value given as limit value.

Preliminary test

The preliminary estimate of water solubility was 1.4 x 10 -3 g/L.

Definitive test

The mean total peak areas relating to the standard and sample solutions are shown in table below:

Solutiuon

Mean total peak area

Standard 50.4 mg/L

1.737 x 105

Standard 50.1 mg/L

1.739 x 105

Sample 1A

6.797 x 103

Sample 1B

3.750 x 104

Sample 3A

4.514 x 103

Sample 3B

1.693 x 104

Standard 50.8 mg/L

1.022 x 105

Standard 52.1 mg/L

1.078 x 105

Sample 2A

3.585 x 104

Sample 2B

3.236 x 104

The concentration (g/L) of test material in the sample solutions is shown in table below:

Sample number

Time shaken at ~ 30 °C (hours)

Time equilibrated at 20 °C (hours)

Concentration (g/L)

Solution pH

1

24

24

< 2.17 x 10-4

5.6

2

48

24

< 3.53 x 10-4

5.9

3

72

24

< 9.79 x 10-5

5.6

Due to the very low levels of test material found in the sample solutions the results have been tabulated as limit values. The overall solubility is reported as a limit value (i.e. less than sample 2).

Description of key information

< 1 mg/L

Key value for chemical safety assessment

Additional information

The water solubility of this substance was deduced from the measurement of a similar substance (CAS-No. 131459 -39 -7). Water solubility is a property which decreases with increasing chain length for substances within the same group of chemicals. The chain length of the source substance is C5 and C9branched, the chain length of the target substance is C5 -10. Therefore the solubility is deduced to be < 1 mg/L.