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Physical & Chemical properties

Water solubility

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Reference
Endpoint:
water solubility
Type of information:
experimental study
Adequacy of study:
key study
Study period:
22 February 2020 to 12 March 2020
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:
according to guideline
Guideline:
EU Method A.6 (Water Solubility)
Deviations:
no
GLP compliance:
yes
Type of method:
flask method
Key result
Water solubility:
4.51 mg/L
Conc. based on:
test mat.
Loading of aqueous phase:
1.388 g/L
Incubation duration:
72 h
Temp.:
20 °C
pH:
>= 6.32 - <= 6.38
Details on results:
PRELIMINARY TEST
Visual: The water solubility in the visual preliminary test was observed to be less than 13 mg/L.
Flask Method: The water solubility using the flask method and analysed by ICP-MS was determined to be 5.11 mg/L as test material at 20.0 ± 0.5 °C.

Definitive Test

The instrument responses (CPS) for the standard, sample and blank solutions are shown in the following table.

Solution

Mean CPS (118Sn)

Matrix blank

18 566

Standard 1.00 x 10^-3 mg/L

30 715

Standard 5.00 x 10^-3 mg/L

65 783

Standard 1.00 x 10^-2 mg/L

114 366

Standard 5.00 x 10^-2 mg/L

510 150

Standard 0.100 mg/L

1 017 835

Standard 0.500 mg/L

4 950 413

Standard 1.00 mg/L

9 817 607

Standard 1.50 mg/L

14 675 933

Standard 2.00 mg/L

19 467 033

Blank

16 212

QC Standard 1.00 x 10^-2 mg/L

117 462

QC Standard 5.00 x 10^-2 mg/L

529 356

Matrix Blank

4 060

Preliminary Sample

10 514 753

Sample 1

10 833 427

Sample 2

82 83 146

Sample 3

9 320 992

QC Standard 1.00 x 10^-2 mg/L

355 497

QC Standard 5.00 x 10^-2 mg/L

614 677

 

The tin concentrations (mg/L) and the calculated test material concentrations (g/L) are shown in the following table.

Sample Number

Time Shaken at ~30 ºC

(hrs)

Tin Concentration

(mg/L)

Solution pH

Mean Tin Concentration

(g/L)

Mean Test Material Concentration

(g/L)

1

72

1.10

6.38

9.64 x 10^-4

4.51 x 10^-3

2

48

0.841

6.34

3

24

0.948

6.32

Conclusions:
Under the conditions of the study the water solubility was 4.51 x 10^-3 g/L at 20.0 ± 0.5 °C.
Executive summary:

The water solubility of the test material was determined according to OECD Test Guideline 105 and EU Method A.6. and in compliance with GLP using a flask method.

Under the conditions of the study the water solubility was 4.51 x 10^-3 g/L at 20.0 ± 0.5 °C.

Description of key information

Key Study: Butler (2020)

Under the conditions of the study the water solubility was 4.51 x 10^-3 g/L at 20.0 ± 0.5 °C.

Key value for chemical safety assessment

Water solubility:
4.51 mg/L
at the temperature of:
20 °C

Additional information

Key Study: Butler (2020)

The water solubility of the test material was determined according to OECD Test Guideline 105 and EU Method A.6. and in compliance with GLP using a flask method. The study was awarded a reliability score of 1 in accordance with the criteria set forth by Klimisch et al. (1997).

Under the conditions of the study the water solubility was 4.51 x 10^-3 g/L at 20.0 ± 0.5 °C.

Supporting Study: de Roode and de Haan (2004)

The water solubility value of between 0.1 and 4.9 mg/L was obtained from a chronic Daphnia reproduction study with the test material. The study was awarded a reliability score of 4 in accordance with the criteria set forth by Klimisch et al. (1997).

Supporting Study: Beimborn (2000)

The water solubility value of < 50 mg/L was obtained from a biodegradability study with the test material. The study was awarded a reliability score of 4 in accordance with the criteria set forth by Klimisch et al. (1997).