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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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:
Tetrasodium [μ-[3-[[2-amino-5-hydroxy-6-[(2-hydroxy-5-nitro-3-sulphophenyl)azo]-7-sulpho-1-naphthyl]azo]-2-hydroxy-5-sulphobenzoato(8-)]]dichromate(4-)
EC Number:
276-538-7
EC Name:
Tetrasodium [μ-[3-[[2-amino-5-hydroxy-6-[(2-hydroxy-5-nitro-3-sulphophenyl)azo]-7-sulpho-1-naphthyl]azo]-2-hydroxy-5-sulphobenzoato(8-)]]dichromate(4-)
Cas Number:
72252-58-5
Molecular formula:
C23H8Cr2N6O16S3.4Na
IUPAC Name:
tetrasodium [μ-[3-[[2-amino-5-hydroxy-6-[(2-hydroxy-5-nitro-3-sulphophenyl)azo]-7-sulpho-1-naphthyl]azo]-2-hydroxy-5-sulphobenzoato(8-)]]dichromate(4-)

Results and discussion

Melting / freezing point
Key result
Decomposition:
yes
Decomp. temp.:
>= 246 °C
Remarks on result:
other: decomposition reaction: mean of 2 measurements, decomposition energy -314 J/g

Any other information on results incl. tables

The a.m. temperature represents the onset temperature of the first run; peak recorded at ca. 323°C (mean), endset temperature at ca. 374°C (mean).

Applicant's summary and conclusion