Registration Dossier

Administrative data

Endpoint:
pH
Type of information:
experimental study
Adequacy of study:
key study
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study
Justification for type of information:
Experimental test result performed using standard test guidelines

Data source

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

Materials and methods

Test guideline
Qualifier:
according to
Guideline:
OECD Guideline 122 (Determination of pH, Acidity and Alkalinity)
Principles of method if other than guideline:
A pH meter is essentially a voltmeter with high input impedance which measures the voltage of an electrode sensitive to the hydrogen ion concentration, relative to another electrode which exhibits a constant voltage
GLP compliance:
no

Test material

Reference
Name:
Unnamed
Type:
Constituent
Test material form:
solid
Details on test material:
- Name of test material: 3-Pyrazolidinone, 4-methyl-1-phenyl-
- Molecular formula: C10H12N2O
- Molecular weight: 176.219 g/mole
- Smiles: O=C1NN(c2ccccc2)CC1C
- Inchl: InChI=1/C10H12N2O/c1-8-7-12(11-10(8)13)9-5-3-2-4-6-9/h2- 6,8H,7H2,1H3,(H,11,13)/f/h11H
- Substance type: Organic
- Physical state: solid

Results and discussion

pH value
Key result
pH value:
5.22
Temp.:
29 °C
Concentration:
1 vol%

Any other information on results incl. tables

Method Details

Observations

Remarks if,

any

Guideline

OECD 122

-

-

Method

Digital pH meter

-

Principle of method

 

The mean pH of an aqueous solution or dispersion in water is determined with a pH

measurement

interface equipped with an appropriate electrode

system.

-

Temperature of 1% w/v

test dispersion

-

29°C

mean pH (RESULT)

-

5.22

Inference

1. Acidic

2. Basic

3. Neutral

Acidic

Applicant's summary and conclusion

Conclusions:
The pH of 1% w/v dispersion of the test chemical was determined to be 5.22 at 29°C.
Executive summary:

The pH determination of test chemical was done following OECD guideline 122. pH of 1% w/v dispersion was measured with the help of pH meter and it was observed to be 5.22 at 29°C.