Sulfonic acids, C6-8-alkane, sodium salts

Water solubility

Link to relevant study record(s)

Reference

Endpoint:

water solubility

Type of information:

experimental study

Adequacy of study:

key study

Reliability:

1 (reliable without restriction)

Rationale for reliability incl. deficiencies:

guideline study

Qualifier:

according to guideline

Guideline:

OECD Guideline 105 (Water Solubility)

Qualifier:

according to guideline

Guideline:

EU Method A.6 (Water Solubility)

GLP compliance:

yes (incl. QA statement)

Type of method:

flask method

Water solubility:

579 g/L

Temp.:

10 °C

pH:

>= 5.8 - <= 5.9

Remarks on result:

other: Mean of determinations based on Na and S analysis

Water solubility:

607 g/L

Temp.:

20 °C

pH:

>= 5.8 - <= 5.9

Remarks on result:

other: Mean of determinations based on Na and S analysis

Details on results:

see below

Solubility of the test item at 10 °C based on sodium

Equilibration time	pH of the solutions		concentration in g / L
	1st	2nd	1st	2nd	mean
Day 1	5.8	5.8	584	569	576
Day 2	5.9	5.9	598	568	583
Day 3	5.8	5.8	561	582	572
Day 4	5.9	5.8	550	555	552
Day 5	5.8	5.8	569	558	564
Day 6	5.9	5.8	558	538	548
Mean			570	562	566
Overall standard deviation					6

 

Solubility of the test item at 10 °C based on sulphur

Equilibration time	pH of the solutions		concentration in g / L
	1st	2nd	1st	2nd	mean
Day 1	5.8	5.8	609	617	613
Day 2	5.9	5.9	605	591	598
Day 3	5.8	5.8	594	581	587
Day 4	5.9	5.8	588	587	587
Day 5	5.8	5.8	584	588	586
Day 6	5.9	5.8	585	573	579
Mean			594	589	592
Overall standard deviation					3

 

Solubility of the test item at 20 °C based on sodium

Equilibration time	pH of the solutions		concentration in g / L
	1st	2nd	1st	2nd	mean
Day 1	5.8	5.8	611	602	607
Day 2	5.9	5.9	600	588	594
Day 3	5.9	5.8	602	584	593
Day 4	5.8	5.8	598	576	587
Day 5	5.8	5.8	594	588	591
Day 6	5.8	5.8	610	621	616
Mean			602	593	598
Overall standard deviation					7

 

Solubility of the test item at 20 °C based on sulphur

Equilibration time	pH of the solutions		concentration in g / L
	1st	2nd	1st	2nd	mean
Day 1	5.8	5.8	630	619	624
Day 2	5.9	5.9	622	613	618
Day 3	5.9	5.8	611	614	613
Day 4	5.8	5.8	611	611	611
Day 5	5.8	5.8	618	610	614
Day 6	5.8	5.8	615	610	612
Mean			618	613	615
Overall standard deviation					4

Executive summary:

The water solubility of the substance was measured according to OECD TG 105 (shake flask method). The concentration of sodium and sulphur in solution was measured using ICP-AES and used to calculate the solubility of the substance. The resulting mean solubility at 20 °C was 607 g/L.

Description of key information

The water solubility is 607 g/L at 20 °C.

Key value for chemical safety assessment

Water solubility:

607 g/L

at the temperature of:

20 °C

Additional information

The water solubility of the substance was measured according to OECD TG 105 (shake flask method). The concentration of sodium and sulphur in solution was measured using ICP-AES and used to calculate the solubility of the substance. The resulting mean solubility at 20 °C was 607 g/L.