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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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:
stability: thermal, sunlight, metals, other
Remarks:
Migrated from section 'Stability: thermal, sunlight, metals'
Type of information:
experimental study
Adequacy of study:
supporting study
Study period:
2010
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
other: well peformed study following acknowledged procedures

Data source

Reference
Reference Type:
study report
Title:
Unnamed
Year:
2010
Report date:
2010

Materials and methods

Test guideline
Qualifier:
according to guideline
Guideline:
other: company SOP: DSC
Deviations:
not specified
Principles of method if other than guideline:
DSC; apparatus: Mettler Toledo, DSC 821e
25 - 400 °C, 3 K/min, sealed glass vial in air
GLP compliance:
no

Test material

Constituent 1
Chemical structure
Reference substance name:
m-(4,5-dihydro-3-methyl-5-oxo-1H-pyrazol-1-yl)benzenesulphonic acid
EC Number:
204-303-0
EC Name:
m-(4,5-dihydro-3-methyl-5-oxo-1H-pyrazol-1-yl)benzenesulphonic acid
Cas Number:
119-17-5
Molecular formula:
C10H10N2O4S
IUPAC Name:
3-(3-methyl-5-oxo-4,5-dihydro-1H-pyrazol-1-yl)benzene-1-sulfonic acid

Results and discussion

For thermal stability study

Operating temperature
Operating temp.:
> 25 - < 400 °C
Remarks on result:
other: The substance decomposes at 198 °C
Sublimation:
no
Transformation products:
not measured

For study on stability to sunlight

Test substance stable to sunlight:
not determined

For study on stability to metals

Test substance stable to metals / metal ions:
not determined

Applicant's summary and conclusion

Conclusions:
The substance starts to decompose at 198 °C (DSC, sealed vial in air)