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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:
2005-07-26 - 2005-12-14
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
other: Guideline study, GLP
Qualifier:
according to
Guideline:
OECD Guideline 105 (Water Solubility)
Deviations:
no
GLP compliance:
yes
Type of method:
flask method
Water solubility:
2 560 mg/L
Temp.:
20 °C
pH:
7.22

Main test

 

Six samples were prepared, each of which contained approx. 200 mg of the test item in 20.0 ml

water. The samples were shaken at 30 QC for 24, 48 and 72 h, respectively, then equilibrated at 20 ± 0.5 QC for at least 24 h. A portion of each of the lower aqueous phases was taken with a syringe. The concentration of the test item in these clear aqueous phases of the samples was analysed by HPLC.

 

Sample No.

Amount of test item

[mg]

Added volume of water

[ml]

Shaking time at 30 °C

[h]

Analysed conc. of the test item

[mg/l]

pH value 1)

1

213.98

20

24

2606

7.21

2

211.21

20

24

2560

7.22

3

215.47

20

48

2596

7.21

4

227.21

20

48

2489

7.22

5

231.89

20

72

2554

7.22

6

226.43

20

72

2555

7.23

1)      The purified water used for the tests had a pH value of 6.52

 

 

 

Mean value

[mg/l

Standard deviation

[mg/l]

Relative standard deviation

 [%]

Samples 1 to 6

2560

41

1.61

 

 

 

Duplicate set of samples after 24 h at 30 °C

Duplicate set of samples after 48 h at 30 °C

Duplicate set of samples after 72 h at 30 °C

Mean avlue

Water solubility

2583 mg/l

2543 mg/l

2555 mg/l

2560 mg/l

 

The relative standard deviation (repeatability) of the concentrations in all six samples was smaller

than 15 % and the three duplicate sets of samples showed no tendency of increasing concentration values. Thus the test was satisfactory.

Conclusions:
Interpretation of results (migrated information): soluble (1000-10000 mg/L)
In a valid guideline study acc. OECD 105 with the shake flask method the water solubility of Butydiglycol methacrylate was 2560 mg/l at 20 °C.
Executive summary:

In a valid guideline study acc. OECD 105 with the shake flask method the water solubility of Butydiglycol methacrylate was 2560 mg/l at 20 °C.

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Description of key information

In a valid guideline study acc. OECD 105 with the shake flask method the water solubility of Butydiglycol methacrylate was 2560 mg/l at 20 °C.

Key value for chemical safety assessment

Water solubility:
2 560 mg/L
at the temperature of:
20 °C

Additional information

Two equivalent studies acc. OECD 105 are available with 2560 mg/l and 2220 mg/l. The GLP study is used as key study.