Registration Dossier

Physical & Chemical properties

Water solubility

Currently viewing:

Administrative data

Link to relevant study record(s)

Reference
Endpoint:
water solubility
Type of information:
experimental study
Adequacy of study:
key study
Study period:
2016.06.06 - 2016.07.15
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study
Qualifier:
according to
Guideline:
OECD Guideline 105 (Water Solubility)
Deviations:
no
Qualifier:
according to
Guideline:
EU Method A.6 (Water Solubility)
Deviations:
no
Principles of method if other than guideline:
NA
GLP compliance:
yes (incl. certificate)
Type of method:
flask method
Specific details on test material used for the study:
SOURCE OF TEST MATERIAL
- Source and lot/batch No.of test material: 151210177
- Expiration date of the lot/batch: 09 December 2016
- Purity: 95.49%
- Purity test date: 09 December 2016
Key result
Water solubility:
ca. 124 g/L
Conc. based on:
test mat. (dissolved fraction)
Incubation duration:
ca. 24 h
Temp.:
20 °C
pH:
ca. 4.47 - ca. 4.53
Remarks on result:
other: (NB! Insert interval including ± SD )Standard deviation of 15.9g/L

The preliminary estimate of water solubility was 121 g/L at 20.0 °C.

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

Solution

Mean Peak Area

Standard at 502 mg/L

2.1083 x 106

Standard at 502 mg/L

2.1511 x 106

Matrix Blank None detected

Matrix Blank None detected

Sample 1, Replicate Dilution A

2.2268 x 106

Sample 1, Replicate Dilution B

2.7144 x 106

Sample 2, Replicate Dilution A

2.3269 x 106

Sample 2, Replicate Dilution B

2.9707 x 106

Sample 3, Replicate Dilution A

1.4745 x 106*

Sample 3, Replicate Dilution B

2.9109 x 106

* Sample 3A was identified as an outlier when applying the modified Thompson Tau test to the mean peak areas

obtained for the six replicate samples. Therefore, this value was discarded for any further calculations.

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

Sample Number

Time Shaken

at 30 ºC (h)

Time Equilibrated

at 20 ºC (h)

 

Concentration

(g/L)

Solution pH

1

24

24

116

4.53

2

48

24

125

4.47

3

72

24

137

4.53

 

The mean concentration : 124 g/L at 20.0 ± 0.5 ºC and Standard deviation : 15.9 g/L

Conclusions:
Determination of the water solubility was performed in accordance to OECD 105 and Method A.6 Water Solubility of Commission Regulation (EC) No 440/2008. The water solubility of Ethoxy ethoxy ethyl acrylate has been determined to be 124 g/L of solution at 20.0 ± 0.5 °C.
Executive summary:

The water solubility of Ethoxy ethoxy ethyl acrylate CAS No. 7328-17-8 has been determined to be 124 g/L of solution at 20.0 ± 0.5 °C, using a flask method designed to be

compatible with Method A.6 Water Solubility of Commission Regulation (EC) No 440/2008 of 30 May 2008 and Method 105 of the OECD Guidelines for Testing of Chemicals, 27 July 1995. As the water solubility was determined during the preliminary test to be above 10-2 g/L, the flask shaking test was performed. On completion of the equilibration period, all three samples presented globules of excess of test item. After centrifugation and filtration through 0.2 μm syringe filters, the sample

filtrates were observed to be free from un-dissolved test item. The presence of a Tyndall beam was checked for but not observed.

The water solubility results of the main test samples seemed to indicate a slightly increase with time shaken; however, the result of the preliminary test and the results of the individual replicates (two of them for each sample) discredited the existence of a trend. All three water solubility results were within ± 15% of the mean, thus satisfying the criteria

specified in the guidelines.

Description of key information

Determination of the water solubility was performed in accordance to OECD 105 and Method A.6 Water Solubility of Commission Regulation (EC) No 440/2008. The water solubility of 2-Propenoic acid, 2-(2-ethoxyethoxy)ethylester (Ethoxy ethoxy ethyl acrylate) has been determined to be 124 g/L of solution at 20.0 ± 0.5 °C

Key value for chemical safety assessment

Water solubility:
124 g/L
at the temperature of:
20 °C

Additional information