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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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:
09Oct2001 to 04Dec2001
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study

Data source

Reference
Reference Type:
study report
Title:
Unnamed
Year:
2001
Report date:
2001

Materials and methods

Test guideline
Qualifier:
according to guideline
Guideline:
OECD Guideline 102 (Melting point / Melting Range)
GLP compliance:
yes
Type of method:
differential scanning calorimetry

Test material

Constituent 1
Chemical structure
Reference substance name:
2-[[4-(dimethylamino)phenyl]azo]-1,3-dimethyl-1H-imidazolium chloride
EC Number:
278-601-4
EC Name:
2-[[4-(dimethylamino)phenyl]azo]-1,3-dimethyl-1H-imidazolium chloride
Cas Number:
77061-58-6
Molecular formula:
C13H18N5.Cl
IUPAC Name:
2-[[4-(dimethylamino)phenyl]azo]-1,3-dimethyl-1H-imidazolium chloride
Test material form:
solid: particulate/powder
Specific details on test material used for the study:
MIP 2985 (Vibracolor Red)
1H-Imidazolium,2[((4-dimethylamino)phenyl)azo]-l,3-dimethylchloride
Sponsor batch: 029753A8AA
Purity:98.8% (stated by Sponsor)wa

Results and discussion

Melting / freezing point
Key result
Decomposition:
yes
Decomp. temp.:
> 205 °C

Applicant's summary and conclusion

Conclusions:
The overall conclusion from this study is that MDP 2985 (Vibracolor Red) is a compoimd which does not melt below 400°C, but which undergoes decomposition from approximately 205°C.
Executive summary:

Examination of the differential scanning calorimetry traces of MIP 2985 (Vibracolor Red), indicated no signals characteristic of melting below 400°C (673 K). Decomposition was seen to occur from nominally 205°C (478 K).

The study is therefore not able to define a melting point due to decomposition before the melthing point is reached.