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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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:
flash point
Type of information:
experimental study
Adequacy of study:
key study
Study period:
05.04.2013 - 18.04.2013
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:
ISO No., other:
Principles of method if other than guideline:
Lowest temperature determined at which substance vaporizes to form an ignitable mixture in air
GLP compliance:
no
Type of method:
open cup

Test material

Constituent 1
Chemical structure
Reference substance name:
2,4-dihydro-5-methyl-3H-pyrazol-3-one
EC Number:
203-565-3
EC Name:
2,4-dihydro-5-methyl-3H-pyrazol-3-one
Cas Number:
108-26-9
Molecular formula:
C4H6N2O
IUPAC Name:
2,4-dihydro-5-methyl-3H-pyrazol-3-one
Details on test material:
- Name of test material: 2,4-dihydro-5-methyl-3H-pyrazol-3-one
- Substance type: Organic
- Physical state: solid

Results and discussion

Flash point
Flash point:
132 °C
Atm. press.:
965 hPa

Applicant's summary and conclusion

Conclusions:
The experimental value of flash point for 2,4-dihydro-5-methyl-3H-pyrazol-3-one by open cup method was found to be 132 deg.C at 965 hPa atmospheric pressure.
Executive summary:

The experimental value of flash point for 2,4-dihydro-5-methyl-3H-pyrazol-3-one by open cup method was found to be 132 deg.C at 965 hPa atmospheric pressure.