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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

Physical & Chemical properties

pH

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Administrative data

Endpoint:
pH
Type of information:
experimental study
Adequacy of study:
key study
Study period:
20.04.2015
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study

Data source

Reference
Reference Type:
study report
Title:
Unnamed
Year:
2015
Report date:
2015

Materials and methods

Test guidelineopen allclose all
Qualifier:
according to guideline
Guideline:
CIPAC MT 75 (Determination of pH Values)
Qualifier:
according to guideline
Guideline:
EPA OPPTS 830.7000 (pH)
GLP compliance:
yes (incl. QA statement)
Remarks:
Hess. Ministerium für Umwelt, Energie, Landwirtschaft und Verbraucherschutz, Mainzer Straße 80, D65189, Wiesbaden

Test material

1
Chemical structure
Reference substance name:
diethyl 1-(2,4-dichlorophenyl)-5-methyl-4,5-dihydro-1H-pyrazole-3,5-dicarboxylate
EC Number:
603-923-2
Cas Number:
135590-91-9
Molecular formula:
C16H18Cl2N2O4
IUPAC Name:
diethyl 1-(2,4-dichlorophenyl)-5-methyl-4,5-dihydro-1H-pyrazole-3,5-dicarboxylate

Reagents

Reagent:
water

Results and discussion

pH value
pH value:
6.2
Temp.:
23.5 °C
Concentration:
1 vol%

Any other information on results incl. tables

The pH-values of three suspensions of approx. 0.5 g of Mefenpyr-diethyl (AE F107892), technical substance, in 50 mL of distilled water were determined at room temperature (23.5 °C). The test item was not completely dissolved. The individual results are summarized below:

Experiment

pH (Temperature)

1

6.35 (23.4 °C)

2

6.13 (23.4 °C)

3

6.06 (23.7 °C)

Mean (experiments 1, 2 and 3): pH 6.2 (23.5 °C)

Mefenpyr-diethyl (AE F107892), technical substance: Suspension (1 %) in distilled water

Applicant's summary and conclusion