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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

Constituent 1
Chemical structure
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.