Registration Dossier

Administrative data

Endpoint:
water solubility
Type of information:
experimental study
Adequacy of study:
key study
Study period:
2017-04 - 2017-08
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study
Cross-reference
Reason / purpose:
reference to same study
Reference
Endpoint:
relative density
Type of information:
experimental study
Adequacy of study:
key study
Study period:
2017-04 - 2017-08
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study
Qualifier:
according to
Guideline:
OECD Guideline 109 (Density of Liquids and Solids)
GLP compliance:
not specified
Type of method:
pycnometer method
Specific details on test material used for the study:
TEST SUBSTANCE: CYASORB® UV-24 Light Absorber
Main component: 2,2`-Dihydroxy-4-methoxybenzophenone CAS# 131-53-3
Molecular formula C14H12O4
Molecular Weight: 244.24 g/mol
Appearance: yellow powder
Type:
density
Density:
1.39 g/cm³
Temp.:
22.7 °C
Type:
relative density
Density:
1.39
Temp.:
22.7 °C

Summary of Density Results, specimen weights, and room temperature during analysis.

Test Substance Specimen No.

Average Density (g/mL)

S.D.

Initial specimen wt (g)

Final sample weight (g)

Temperature (°C)

1

1.3886

0.0008

4.5107

4.5106

22.7

2

1.3887

0.0006

4.7798

4.7798

22.7

Conclusions:
The density of the test item is 1.39 g/cm³ at room temperature.
Executive summary:

The density of 2,2'-Dihydroxy-4 -methoxybenzophenone is 1.39 g/cm³ at 22.7 °C.

Data source

Reference
Reference Type:
study report
Title:
Unnamed
Year:
2017
Report Date:
2017

Materials and methods

Test guideline
Qualifier:
according to
Guideline:
OECD Guideline 105 (Water Solubility)
GLP compliance:
not specified
Type of method:
flask method

Test material

Reference
Name:
Unnamed
Type:
Constituent
Test material form:
solid: particulate/powder
Specific details on test material used for the study:
TEST SUBSTANCE: CYASORB® UV-24 Light Absorber
Main component: 2,2`-Dihydroxy-4-methoxybenzophenone CAS# 131-53-3
Molecular formula C14H12O4
Molecular Weight: 244.24 g/mol
Appearance: yellow powder

Results and discussion

Water solubility
Water solubility:
0 g/L
Conc. based on:
test mat.
Temp.:
20 °C
pH:
7

Any other information on results incl. tables

Solubility of test substance at 20°C.

Supernatant No.

Equilibrium time (h)

UV24 Conc. (mg/L)

UV24 Conc. (ppb)

1

24

0.0131

13.1

2

48

0.0122

12.2

3

72

0.0116

11.6

4

24

0.0120

12.0

5

48

0.0136

13.6

6

72

0.0127

12.7

Average and S.D.à

0.013 ± 0.0007

12.5 ± 0.7

Applicant's summary and conclusion

Conclusions:
The test item has a solubility of 0.000013 g/L at 20 °C.
Executive summary:

2,2'-Dihydroxy-4 -methoxybenzophenone has a measured solubility of 0.000013 g/L at 20 °C.