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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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:
2014
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
other: well performed study according to acknowledged standard

Data source

Reference
Reference Type:
other: Certificate od Analysis, physical measurement
Title:
Unnamed
Year:
2014
Report date:
2014

Materials and methods

Test guideline
Qualifier:
according to guideline
Guideline:
other: company SOP
Principles of method if other than guideline:
Differential scanning calorimetry (DSC)
GLP compliance:
no
Type of method:
thermal analysis

Test material

Constituent 1
Reference substance name:
pentasodium 4-({4-[(4-aminophenyl)({4-[(4-sulfonatophenyl)amino]cyclohexa-2,5-dien-1-ylidene})methyl]phenyl}amino)benzene-1-sulfonate 4-{[4-({4-[(4-sulfonatophenyl)amino]cyclohexa-2,5-dien-1-ylidene}({4-[(4-sulfonatophenyl)amino]phenyl})methyl)phenyl]amino}benzene-1-sulfonate
EC Number:
944-086-6
IUPAC Name:
pentasodium 4-({4-[(4-aminophenyl)({4-[(4-sulfonatophenyl)amino]cyclohexa-2,5-dien-1-ylidene})methyl]phenyl}amino)benzene-1-sulfonate 4-{[4-({4-[(4-sulfonatophenyl)amino]cyclohexa-2,5-dien-1-ylidene}({4-[(4-sulfonatophenyl)amino]phenyl})methyl)phenyl]amino}benzene-1-sulfonate
Test material form:
solid
Details on test material:
UVCB

Results and discussion

Melting / freezing point
Melting / freezing pt.:
> 191 °C
Atm. press.:
ca. 1 atm
Decomposition:
yes
Decomp. temp.:
ca. 191 °C
Sublimation:
no
Remarks on result:
other: no melting point bevor decomposition

Any other information on results incl. tables

The product starts to decompose in the sealed vial at 191°C with a mean energy of 121 J/g.

Applicant's summary and conclusion

Conclusions:
The melting point of the substance is >191°C:
Executive summary:

The melting point of the substance was not determined by DSC because decomposition at 191°C started first.