Registration Dossier

Data platform availability banner - registered substances factsheets

Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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:
relative density
Type of information:
experimental study
Adequacy of study:
key study
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study

Data source

Reference
Reference Type:
study report
Title:
Unnamed
Year:
2017
Report date:
2017

Materials and methods

Test guidelineopen allclose all
Qualifier:
according to guideline
Guideline:
OECD Guideline 109 (Density of Liquids and Solids)
Qualifier:
according to guideline
Guideline:
other: EEC No 440/2008 A.1.
GLP compliance:
no
Type of method:
pycnometer method
Remarks:
helium pycnometry

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

Densityopen allclose all
Key result
Type:
density
Density:
1.267 g/cm³
Temp.:
20 °C
Key result
Type:
density
Density:
1.266 other: g/cc
Temp.:
20 °C

Any other information on results incl. tables

Sample 1 : density standard deviation of 0.00023 g/cm3 ; % std deviation on density: 0.01840 %

Sample 2 : density standard deviation of 0.00039 g/cc ; % std deviation on density: 0.03090 %

Applicant's summary and conclusion

Conclusions:
The mean relative density of Pyrazole was 1.27 (two measures performed), according to regulation EEC No 440/2008 A.1. and OECD guideline 109/2012 by helium pycnometry.