Alcohols, C9-11, branched and linear, ethoxylated, sulfates, ammonium salts

Water solubility

Link to relevant study record(s)

Reference

Endpoint:

water solubility

Type of information:

experimental study

Adequacy of study:

key study

Study period:

16 Apr 2012

Reliability:

1 (reliable without restriction)

Rationale for reliability incl. deficiencies:

guideline study

Qualifier:

according to guideline

Guideline:

EU Method A.6 (Water Solubility)

Qualifier:

according to guideline

Guideline:

OECD Guideline 105 (Water Solubility)

GLP compliance:

no

Type of method:

flask method

Water solubility:

> 330 g/L

Temp.:

20 °C

pH:

4.3

Remarks on result:

other: Gel formed at about 500 g/L; as no discrete point can be identified, value estimated as above

Preliminary test:

The following aliquots of the test substance were added to 2 g of water and stirred slowly for 10 minutes:

Aliquot	Weighed sample, g
A	0.1
B	0.3
C	1.0
D	2.0

While being added to the water, solutions with increasing viscosity were being formed, resulting in a gel after the addition of 2 g of the test item.

With 2 g of test item being mixed into 2 g of water, a gel with a total weight of 4 g has been formed. This is equivalent to 50 % (w/w) of test item in solution/gel.

As the density of the water will significantly increase with addition of the test item, it can be concluded that the water solubility is about 500 g/L, resulting in a gel.

Due to the fact that the gel formation is a continuous process and no discrete point can be identified at which dissolution in water switches to gelling, the water solubility can be approximated to > 330 g/L.

Description of key information

> 330 g/L at 20 °C, pH =4.3

Additional information

The water solubility of the substance was determined according to OECD Guideline 105 and EU Method A.6 (flask method). Gel formation at concentrations > 330 g/L was observed.