Registration Dossier

Administrative data

Endpoint:
melting point/freezing point
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 102 (Melting point / Melting Range)
GLP compliance:
not specified
Type of method:
differential scanning calorimetry

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

Melting / freezing point
Melting / freezing pt.:
> 70.6 - < 77.2 °C
Decomposition:
no

Any other information on results incl. tables

Melting point / melting range of test substance determined on 1stheat cycle.

Specimen No.

Onset (Melting Point) (°C)

Peak (°C)

Endset (°C)

Melting Range (°C)

Enthalpy (joules/g)

1

70.6

70.6

76.4

72.5 – 76.4

101

2

70.6

70.6

77.2

72.4 – 77.2

101

 

Applicant's summary and conclusion

Conclusions:
The melting point of the test substance as observed by the onset is 70.6 °C. The melting range is 70.6 to 77.2 °C as observed by the onset and endset of the 1st heat cycle.
Executive summary:

The melting point of the 2,2'-Dihydroxy-4 -methoxybenzophenone is 70.6 °C.  The melting range is 70.6 to 77.2 °C.