Poly(oxy-1,2-ethanediyl), α,α'-(iminodi-2,1-ethanediyl)bis[.omega.-hydroxy-, N-[3-(C10-16-alkyloxy)propyl] derivs., di-Et sulfate-quaternized

Water solubility

Link to relevant study record(s)

Reference

Endpoint:

water solubility

Type of information:

experimental study

Adequacy of study:

key study

Study period:

2017

Reliability:

1 (reliable without restriction)

Rationale for reliability incl. deficiencies:

guideline study

Qualifier:

according to guideline

Guideline:

OECD Guideline 105 (Water Solubility)

Deviations:

no

Qualifier:

equivalent or similar to guideline

Guideline:

EU Method A.6 (Water Solubility)

Deviations:

no

GLP compliance:

no

Type of method:

flask method

Specific details on test material used for the study:

Name: Poly(oxy-1,2-ethanediyl), .alpha.,.alpha.'-(iminodi-2,1-ethanediyl)bis[.omega.-hydroxy-, N-[3-(C10-16-alkyloxy)propyl] derivs., di-Et sulfate-quaternized
Product Description: C10-16-alkyletherpropylamine, ethoxylated, DES Quat
CAS No.: 70983-58-3
Physical state: yellowish to amber viscous liquid at 20 °C
Batch No.: PFS-755-173
Re-certification date of batch: 19 April 2018
Purity: 100 % (UVCB)
Color, Gardner 8.8
pH, 5% in water 5.76
Acid Value , mg KOH/g 20.1
Moisture, % 0.127
Total Amine, mg/g 11.18
Viscosity,cps, #4@60,25C 3280
Appearance @25C pass
Stability: stable under test conditions
Storage condition of test material: Room temperature, protected from light

Key result

Water solubility:

637 g/L

Conc. based on:

test mat. (total fraction)

Incubation duration:

24 h

Temp.:

20 °C

pH:

5.58

Results

The following amounts of the test item were added to water:

Table: Water solubility of test item

Experiment	Water [g]	Weighed sample [g]	Result
A	2.0	0.2354	clear yellowish liquid
B	2.0	0.5318	clear yellowish liquid
C	2.0	3.5123	clear yellow gel

With 3.5123 g of test item being mixed into 2 g of water, a gel with a total weight of 5.5123 g has been formed. This is equivalent to 63.7% (w/w) of test item in solution/gel. Due to the fact, that the density of the gel is not known and that the formation of the gel is a continuous process and no discrete point can be identified at which dissolution in water switches to gelling, the water solubility can only be approximated to 637 g/L. It is likely that it is possible to create a gel with even higher concentrations of the test item The pH value of a 10% solution of the test item in water was 5.58, the tests were performed at 20 °C.

Conclusions:

Due to the formation of a gel, the investigation was stopped after the preliminary test, and the water solubility was approximated to 637 g/L. It is likely that it is possible to create a gel with even higher concentrations of the test item. The pH value of a 10% solution of the test item in water was 5.58, the tests were performed at 20 °C.

Executive summary:

The Water solubility of the test item was determined according to OECD Guideline 105 – Flask method. Due to the formation of a gel, the investigation was stopped after the preliminary test, and the water solubility was approximated to 637 g/L. It is likely that it is possible to create a gel with even higher concentrations of the test item. The pH value of a 10% solution of the test item in water was 5.58, the tests were performed at 20 °C.

Description of key information

Due to the formation of a gel, the investigation was stopped after the preliminary test, and the water solubility was approximated to 637 g/L. It is likely that it is possible to create a gel with even higher concentrations of the test item. The pH value of a 10% solution of the test item in water was 5.58, the tests were performed at 20 °C.

Key value for chemical safety assessment

Water solubility:

637 g/L

at the temperature of:

20 °C