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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

Physical & Chemical properties

Melting point / freezing point

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Administrative data

Endpoint:
melting point/freezing point
Type of information:
experimental study
Adequacy of study:
key study
Study period:
07.03.2013 - 18.03.2013
Reliability:
1 (reliable without restriction)

Data source

Reference
Reference Type:
study report
Title:
Unnamed
Year:
2013
Report date:
2013

Materials and methods

Test guideline
Qualifier:
according to guideline
Guideline:
other: capillary method
Principles of method if other than guideline:
The temperature at which substance changes its phase at standard atmospheric pressure
GLP compliance:
no
Type of method:
capillary method

Test material

Constituent 1
Chemical structure
Reference substance name:
5-amino-2-(p-aminoanilino)benzenesulphonic acid
EC Number:
204-344-4
EC Name:
5-amino-2-(p-aminoanilino)benzenesulphonic acid
Cas Number:
119-70-0
Molecular formula:
C12H13N3O3S
IUPAC Name:
5-amino-2-[(4-aminophenyl)amino]benzene-1-sulfonic acid
Test material form:
other: Amorphous
Details on test material:
- Name of test material: 5-amino-2-(p-aminoanilino)benzenesulphonic acid
- Substance type: Organic
- Physical state: solid

Results and discussion

Melting / freezing point
Melting / freezing pt.:
239 °C
Atm. press.:
990 hPa
Decomposition:
no
Sublimation:
no
Remarks on result:
other: No decomposition at the melting point

Applicant's summary and conclusion

Conclusions:
The Substance 5-amino-2-(p-aminoanilino)benzenesulphonic acid depicted an experimental melting point of 239oC at an atmospheric pressure of 990 hPa . There was no decomposition or sublimation of the substance at the melting point.
Executive summary:

The Substance 5-amino-2-(p-aminoanilino)benzenesulphonic acid depicted an experimental melting point of 239oC at an atmospheric pressure of 990 hPa . There was no decomposition or sublimation of the substance at the melting point.