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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

Data source

Reference
Reference Type:
study report
Title:
Unnamed
Year:
2018
Report date:
2018

Materials and methods

Test guideline
Qualifier:
according to guideline
Guideline:
other: DIN 19268
GLP compliance:
no

Test material

Constituent 1
Chemical structure
Reference substance name:
3-methyl-1-(4-nitrophenyl)-5-pyrazolone
EC Number:
229-018-9
EC Name:
3-methyl-1-(4-nitrophenyl)-5-pyrazolone
Cas Number:
6402-09-1
Molecular formula:
C10H9N3O3
IUPAC Name:
5-methyl-2-(4-nitrophenyl)-1,2-dihydro-3H-pyrazol-3-one
Test material form:
solid: particulate/powder
Details on test material:
Substance Name: 3H-Pyrazol-3-one, 2,4-dihydro-5-methyl-2-(4-nitrophenyl)-
CAS no.: 6402-09-1
EC no.: 229-018-9
Appearance Powder / brown
Specific details on test material used for the study:
Substance Name: 3H-Pyrazol-3-one, 2,4-dihydro-5-methyl-2-(4-nitrophenyl)-
CAS no.: 6402-09-1
EC no.: 229-018-9
Appearance Powder / brown

Reagents

Reagent:
water

Results and discussion

pH value
Key result
pH value:
6.5
Temp.:
20 °C
Concentration:
1 vol%

Applicant's summary and conclusion

Conclusions:
pH of 3-Methyl-1-(4-nitrophenyl)-5-pyrazolone in 1% water at 20°C is measured as 6.5 (DIN 19268).
Executive summary:

pH of 3-Methyl-1-(4-nitrophenyl)-5-pyrazolone in 1% water at 20°C is measured as 6.5 (DIN 19268).