3-[(4,5-dihydro-3-methyl-5-oxo-1-phenyl-1H-pyrazol-4-yl)azo]-N,N,N-trimethylanilinium chloride

pH

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:

2016

Report date:

2016

Materials and methods

Test guideline

Qualifier:

according to guideline

Guideline:

other: OECD 122

Principles of method if other than guideline:

The pH determination of test item 3-[(4,5-dihydro-3-methyl-5-oxo-1-phenyl-1H-pyrazol-4-yl)azo]-N,N,N-trimethylanilinium chloride(CAS No.68391-31-1) was done as per the test guideline OECD 122. The mean pH of the test dispersionwas determined with the help of digital pH meter.

GLP compliance:

no

Test material

Test material information

Constituent 1

Reference substance name:

3-[(4,5-dihydro-3-methyl-5-oxo-1-phenyl-1H-pyrazol-4-yl)azo]-N,N,N-trimethylanilinium chloride

EC Number:

269-943-5

EC Name:

3-[(4,5-dihydro-3-methyl-5-oxo-1-phenyl-1H-pyrazol-4-yl)azo]-N,N,N-trimethylanilinium chloride

Cas Number:

68391-31-1

Molecular formula:

C19H22ClN5O

IUPAC Name:

N,N,N-trimethyl-3-[(3-methyl-5-oxo-1-phenyl-4,5-dihydro-1H-pyrazol-4-yl)diazenyl]anilinium chloride

Test material form:

solid

Details on test material:

- Name of test material (as cited in study report): Basic yellow 57
- Molecular formula (if other than submission substance): C19-H22-N5-O.Cl
- Molecular weight (if other than submission substance): 371.87 g/mol
- Smiles notation (if other than submission substance): N1(C([C@@H](\N=N\c2cc([N+](C)(C)C)ccc2)C(=N1)C)=O)c1ccccc1.[ClH-]
- InChl (if other than submission substance): 1S/C19H22N5O.ClH/c1-14-18(19(25)23(22-14)16-10-6-5-7-11-16)21-20-15-9-8-12-17(13-15)24(2,3)4;/h5-13,18H,1-4H3;1H/q+1;/p-1/b21-20+;
- Structural formula attached as image file (if other than submission substance): No data available
- Substance type: Organic
- Physical state: Solid orange powder

Results and discussion

pH value

Key result

pH value:

2.52

Temp.:

29 °C

Concentration:

1 vol%

Remarks on result:

other: Acidic

Any other information on results incl. tables

Observation Table & Result :

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 was determined with a pH measurement interface equipped with an appropriate electrode system.
Temperature of 1% w/v test dispersion		29 °C
Mean pH (RESULT)		2.52
Inference	1. Acidic 2. Basic 3. Neutral	Acidic

Applicant's summary and conclusion

Conclusions:

The pH determination of test item 3-[(4,5-dihydro-3-methyl-5-oxo-1-phenyl-1H-pyrazol-4-yl)azo]-N,N,Ntrimethylanilinium chloride (CAS No 68391-31-1) was done following OECD guideline 122. pH of 1% w/v solution was measured with the help of pH meter and it was observed to be 2.52at 29 °C.

Executive summary:

The pH determination of test item 3-[(4,5-dihydro-3-methyl-5-oxo-1-phenyl-1H-pyrazol-4-yl)azo]-N,N,Ntrimethylanilinium chloride (CAS No 68391-31-1) was done following OECD guideline 122. pH of 1% w/v solution was measured with the help of pH meter and it was observed to be 2.52at 29 °C.