Registration Dossier

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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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:
other: according to company guideline and standard operating procedure

Data source

Reference
Reference Type:
study report
Title:
Unnamed
Year:
2016
Report date:
2016

Materials and methods

Principles of method if other than guideline:
Differential Scanning Calorimetry
Type of method:
thermal analysis

Test material

Constituent 1
Chemical structure
Reference substance name:
Disodium [6-hydroxy-5-[(2-hydroxy-5-sulphophenyl)azo]naphthalene-2-sulphonato(4-)]cuprate(2-)
EC Number:
276-423-1
EC Name:
Disodium [6-hydroxy-5-[(2-hydroxy-5-sulphophenyl)azo]naphthalene-2-sulphonato(4-)]cuprate(2-)
Cas Number:
72152-71-7
Molecular formula:
C16H8CuN2O8S2.2Na
IUPAC Name:
Cuprate(2-), [6-(hydroxy-kO)-5-[2-[2-(hydroxy-kO)-5-sulfophenyl]diazenyl-kN1]-2-naphthalenesulfonato(4-)]-, sodium

Results and discussion

Melting / freezing point
Decomposition:
yes
Decomp. temp.:
>= 300 °C
Remarks on result:
other: decomposition reaction: mean of 2 measurements, decomposition energy -197 J/g

Any other information on results incl. tables

2 peaks could be observed In immediate succession. a.m. temperature represents the onset temperature of the 1st peak. Decomposition energy of -197 J/g is the sum of both peaks.

Applicant's summary and conclusion