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Physical & Chemical properties

Stability in organic solvents and identity of relevant degradation products

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Administrative data

Endpoint:
stability in organic solvents and identity of relevant degradation products
Type of information:
experimental study
Adequacy of study:
key study
Reliability:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
comparable to guideline study with acceptable restrictions
Remarks:
according to company guideline, but limited documentation

Data source

Reference
Reference Type:
study report
Title:
Unnamed
Year:
2002
Report date:
2002

Materials and methods

Principles of method if other than guideline:
UV-vis-spectrometry after stirring of pigment dispersions in DMSO for 48 hours

Test material

Constituent 1
Chemical structure
Reference substance name:
2,2'-[(3,3'-dichloro[1,1'-biphenyl]-4,4'-diyl)bis(azo)]bis[N-(4-chloro-2,5-dimethoxyphenyl)-3-oxobutyramide]
EC Number:
226-939-8
EC Name:
2,2'-[(3,3'-dichloro[1,1'-biphenyl]-4,4'-diyl)bis(azo)]bis[N-(4-chloro-2,5-dimethoxyphenyl)-3-oxobutyramide]
Cas Number:
5567-15-7
Molecular formula:
C36H32Cl4N6O8
IUPAC Name:
2,2'-[(3,3'-dichlorobiphenyl-4,4'-diyl)didiazene-2,1-diyl]bis[N-(4-chloro-2,5-dimethoxyphenyl)-3-oxobutanamide]
Test material form:
solid: nanoform

Results and discussion

Test substance stable:
yes
Transformation products:
no

Any other information on results incl. tables

A 0.01% and a 5% slurry of the test substance in DMSO is stable for at least 48 h. The slurry has to be stirred intensively to get a homogeneous distribution of the test substance.

Applicant's summary and conclusion

Conclusions:
The test substance is stable in DMSO.
Executive summary:

The stability of the test substance was determined using UV-vis spectrometry. The test substance was stable in DMSO for more than 48 hours.