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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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:
appearance / physical state / colour
Type of information:
experimental study
Adequacy of study:
key study
Reliability:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
study well documented, meets generally accepted scientific principles, acceptable for assessment

Data source

Reference
Reference Type:
other company data
Title:
Unnamed
Year:
2015
Report date:
2015

Materials and methods

Test guideline
Qualifier:
according to guideline
Guideline:
other: QJ/XHSG
GLP compliance:
not specified

Test material

Constituent 1
Chemical structure
Reference substance name:
3-methyl-1-phenyl-5-pyrazolone
EC Number:
201-891-0
EC Name:
3-methyl-1-phenyl-5-pyrazolone
Cas Number:
89-25-8
Molecular formula:
C10H10N2O
IUPAC Name:
5-methyl-2-phenyl-2,4-dihydro-3H-pyrazol-3-one

Results and discussion

Physical state at 20°C and 1013 hPa:
solid
Form / colour / odour
Key result
Form:
solid: particulate/powder
Colour:
Pale yellow
Odour:
other: not specified

Applicant's summary and conclusion

Conclusions:
Pyrazole is a pale yellow crystalline powder.