Alcohols, C10-16, ethoxylated, sulfates, triethanolammonium salts

Solubility in organic solvents / fat solubility

Administrative data

Endpoint:

solubility in organic solvents / fat solubility

Type of information:

experimental study

Adequacy of study:

key study

Study period:

28 Apr - 2 May 2016

Reliability:

2 (reliable with restrictions)

Rationale for reliability incl. deficiencies:

guideline study with acceptable restrictions

Data source

Reference

Reference Type:

study report

Title:

Unnamed

Year:

2016

Report date:

2016

Materials and methods

Test guideline

Qualifier:

according to guideline

Guideline:

other: OECD 105

Deviations:

yes

Remarks:

preliminary test only, due to gel formation

Principles of method if other than guideline:

Although the guideline OECD 105 refers to solubility in water, the protocol can be applied also for other type solvents, including organic ones, and in particular n-octanol.

GLP compliance:

no

Test material

Test material information

Constituent 1

Reference substance name:

Alcohols, C10-16, ethoxylated, sulfates, triethanolammonium salts

EC Number:

500-344-6

EC Name:

Alcohols, C10-16, ethoxylated, sulfates, triethanolammonium salts

Cas Number:

157627-94-6

Molecular formula:

n.a. (UVCB)

IUPAC Name:

Alcohols C12-14, ethoxylated (1-2.5 EO) sulfated, trieth salts

Results and discussion

Solubility in organic solvents / fat solubility

Medium:

n-octanol

Solubility:

> 549 g/L

Temp.:

20 °C

Remarks on result:

other: With increasing amount of test item (> 549 g/L) a gel is formed.

Test substance stable:

yes

Any other information on results incl. tables

Preliminary test:

To 1.64 g of n-octanol, the following aliquots of test item were added:

Experiment	Weighed sample [g]	Result
A	0.01	clear liquid
B	0.05	clear liquid
C	0.2	clear liquid
D	1.0	clear liquid, viscous
E	2.0	clear gel

With 2.0 g of test item being mixed into 1.64 g of n-octanol, a clear gel with a total weight of 3.64 g has been formed. This is equivalent to 54.9% (w/w) of test item in solution/gel.

As the density of the n-octanol will significantly increase with addition of the test item, it can be concluded that n-octanol solubility is about 549 g/L, resulting in a gel. Due to the fact, that the formation of the gel is a continuous process and no discrete point can be identified at which dissolution in n-octanol switches to gelling, the n-octanol solubility can be approximated to > 549 g/L.