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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
Reliability:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
other: Reliable information from certificate of anaylsis; measurement according to company guideline

Data source

Reference
Reference Type:
study report
Title:
Unnamed
Year:
2009
Report date:
2009

Materials and methods

Principles of method if other than guideline:
Measurement according to company guideline
Type of method:
thermal analysis

Test material

Constituent 1
Chemical structure
Reference substance name:
4-(3-methyl-5-oxo-2-pyrazolin-1-yl)benzenesulphonic acid
EC Number:
201-901-3
EC Name:
4-(3-methyl-5-oxo-2-pyrazolin-1-yl)benzenesulphonic acid
Cas Number:
89-36-1
Molecular formula:
C10H10N2O4S
IUPAC Name:
4-(3-methyl-5-oxo-4,5-dihydro-1H-pyrazol-1-yl)benzenesulfonic acid

Results and discussion

Melting / freezing point
Decomposition:
yes
Decomp. temp.:
>= 304 °C

Any other information on results incl. tables

No melting could be observed. Decomposition: onset 304°C, peak 327°C

Applicant's summary and conclusion