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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.

The new ECHA CHEM database has been released by ECHA, and it now contains all REACH registration data. There are more details on the transition of ECHA's published data to ECHA CHEM here.

Diss Factsheets

Administrative data

Endpoint:
melting point/freezing point
Type of information:
experimental study
Adequacy of study:
key study
Study period:
04 August 2003
Reliability:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
other: Basic data given: comparable to guidelines/standards

Data source

Reference
Reference Type:
study report
Title:
Unnamed
Year:
2003
Report date:
2003

Materials and methods

Principles of method if other than guideline:
Differential thermal analysis
Type of method:
thermal analysis
Remarks:
DTA

Test material

Constituent 1
Chemical structure
Reference substance name:
Dichloro-5,12-dihydroquino[2,3-b]acridine-7,14-dione
EC Number:
254-100-6
EC Name:
Dichloro-5,12-dihydroquino[2,3-b]acridine-7,14-dione
Cas Number:
38720-66-0
Molecular formula:
C20H10Cl2N2O2
IUPAC Name:
1,8-dichloro-5,7,12,14-tetrahydro-5,12-diazapentacene-7,14-dione; 1,9-dichloro-5,7,12,14-tetrahydro-5,12-diazapentacene-7,14-dione; 2,9-dichloro-5,7,12,14-tetrahydro-5,12-diazapentacene-7,14-dione

Results and discussion

Melting / freezing point
Melting / freezing pt.:
>= 450 °C
Decomposition:
no
Decomp. temp.:
>= 450 °C

Any other information on results incl. tables

No exothermal decomposition reaction was observed in the DTA up to 450°C and no endothermal (melting) reaction was discernible (melting point given as >=450°C).

Explosive properties can be excluded due to the absence of a decomposition reaction up to 450 °C.

Applicant's summary and conclusion

Conclusions:
The test substance did not melt and showed no transition in the DTA below 450°C (melting point/decomposition temperature >= 450°C).
Executive summary:

When examined by differential thermal analysis, the test substance did not melt and showed no transition in the DTA below 450°C (melting point/decomposition temperature >= 450°C).