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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:
2010
Report date:
2010

Materials and methods

Principles of method if other than guideline:
UV-Vis analysis of test substance solutions in DMSO and in 1,2-propylene glycol after stirring for 72 hours at room temperature

Test material

Constituent 1
Chemical structure
Reference substance name:
5,12-dihydro-2,9-dimethylquino[2,3-b]acridine-7,14-dione
EC Number:
213-561-3
EC Name:
5,12-dihydro-2,9-dimethylquino[2,3-b]acridine-7,14-dione
Cas Number:
980-26-7
Molecular formula:
C22H16N2O2
IUPAC Name:
2,9-dimethyl-5,12-dihydroquino[2,3-b]acridine-7,14-dione
Test material form:
solid: nanoform
Details on test material:
name of test material (as cited in study report): Hostaperm Pink E
batch: DEB2018126
analytical purity: 98.44 % (w/w) C.I. Pigment Red 122

Results and discussion

Test substance stable:
yes

Any other information on results incl. tables

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

Applicant's summary and conclusion

Conclusions:
The test item is stable in DMSO and 1,2-propylene glycol.
Executive summary:

The stability of the test substance was determined using UV-vis spectrometry. The test substance was stable in DMSO and 1,2 -propylene glycol for more than 72 hours.