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Physical & Chemical properties

Stability in organic solvents and identity of relevant degradation products

Administrative data

Endpoint:
stability in organic solvents and identity of relevant degradation products
Type of information:
experimental study
Adequacy of study:
key study
Study period:
23 Apr 2010
Reliability:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
other: Acceptable, well-documented study report which meets basic scientific principles.

Data source

Reference
Reference Type:
study report
Title:
Unnamed
Year:
2011
Report date:
2010

Materials and methods

Principles of method if other than guideline:
Stability in organic solvents by UV-vis spectrometry

Test material

Constituent 1
Reference substance name:
Reaction mass of 4-[[4-(aminocarbonyl)phenyl]azo]-N-(2-ethoxyphenyl)-3-hydroxynaphthalene-2-carboxamide and 4-[[4-(aminocarbonyl)phenyl]azo]-3-hydroxy-N-(2-methoxyphenyl)naphthalene-2-carboxamide
EC Number:
911-436-4
Molecular formula:
not applicable
IUPAC Name:
Reaction mass of 4-[[4-(aminocarbonyl)phenyl]azo]-N-(2-ethoxyphenyl)-3-hydroxynaphthalene-2-carboxamide and 4-[[4-(aminocarbonyl)phenyl]azo]-3-hydroxy-N-(2-methoxyphenyl)naphthalene-2-carboxamide

Results and discussion

Test substance stable:
yes

Any other information on results incl. tables

The test substance is stable and homogeneous for more than 72 hours in DMSO (0.1 and 50 mg/mL) and in 1,2-propylene glycol (0.1 and 50 mg/mL) at room temperature.

Intensive stirring is necessary for a homogeneous dispersion. About 4 hours is necessary to get a homogeneous dispersion.

Applicant's summary and conclusion

Conclusions:
The test substance is stable and homogeneous for more than 72 hours in DMSO (0.1 and 50 mg/mL) and in 1,2-propylene glycol (0.1 and 50 mg/mL) at room temperature.
Executive summary:

The stability of the test substance in organic solvents was determined by UV-vis spectrometry.

The test substance is stable and homogeneous for more than 72 hours in DMSO (0.1 and 50 mg/mL) and in 1,2-propylene glycol (0.1 and 50 mg/mL) at room temperature.