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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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
Reliability:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
comparable to guideline study with acceptable restrictions
Cross-reference
Reason / purpose for cross-reference:
reference to other study
Reference
Endpoint:
self-reactive substances
Remarks:
Preliminary test: DTA (Differential Thermal Analysis)
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
Reason / purpose for cross-reference:
reference to other study
Principles of method if other than guideline:
- Principle of test: DTA (Differential Thermal Analysis)
- Short description of test conditions:
start temperature: 25 °C
end temperature: 500 °C
heat rate: 3.0 K/min
weight: 3.23 mg

- Parameters analysed / observed: heat flow
- Apparatus: Mettler TA3000 System, glas pot
GLP compliance:
no

Start of decompostion was observed at 130 °C. The heat of decompostion was calculated to be - 390 J/g.

Data source

Reference
Reference Type:
study report
Title:
Unnamed
Year:
1986
Report date:
1986

Materials and methods

Test guideline
Qualifier:
no guideline followed
Principles of method if other than guideline:
- Principle of test: DTA (Differential Thermal Analysis)
- Short description of test conditions:
start temperature: 25 °C
end temperature: 500 °C
heat rate: 3.0 K/min
weight: 3.23 mg

- Parameters analysed / observed: heat flow
- Apparatus: Mettler TA3000 System, glas pot
GLP compliance:
no
Type of method:
other: Preliminary test: DTA (Differential Thermal Analysis)

Test material

Constituent 1
Chemical structure
Reference substance name:
4-(2-phenylpropan-2-yl)phenyl 4-oxo-3-(λ⁵-diazynylidene)-3,4-dihydronaphthalene-1-sulfonate
Cas Number:
23121-00-8
Molecular formula:
C25H20N2O4S
IUPAC Name:
4-(2-phenylpropan-2-yl)phenyl 4-oxo-3-(λ⁵-diazynylidene)-3,4-dihydronaphthalene-1-sulfonate
Test material form:
solid

Results and discussion

Melting / freezing pointopen allclose all
Decomposition:
yes
Decomp. temp.:
130 °C
Remarks on result:
other: atmospheric pressure assumed
Melting / freezing pt.:
ca. 120 °C
Remarks on result:
other: atmospheric pressure assumed

Applicant's summary and conclusion

Conclusions:
Melting point at approx. 120°C, decomposition at 130°C.