Registration Dossier

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 OECD test guidelines

Data source

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

Materials and methods

Test guideline
Qualifier:
according to guideline
Guideline:
OECD Guideline 122 (Determination of pH, Acidity and Alkalinity)
GLP compliance:
no

Test material

Constituent 1
Chemical structure
Reference substance name:
Tetrasodium 7-amino-4-hydroxy-3-[(2-methoxy-5-methyl-4-{[2-(sulfonatooxy)ethyl]sulfonyl}phenyl)diazenyl]-8-[(2-sulfonato-4-{[2-(sulfonatooxy)ethyl]sulfonyl}phenyl)diazenyl]naphthalene-2-sulfonate
Molecular formula:
C28H25N5Na4O20S6
IUPAC Name:
Tetrasodium 7-amino-4-hydroxy-3-[(2-methoxy-5-methyl-4-{[2-(sulfonatooxy)ethyl]sulfonyl}phenyl)diazenyl]-8-[(2-sulfonato-4-{[2-(sulfonatooxy)ethyl]sulfonyl}phenyl)diazenyl]naphthalene-2-sulfonate
Test material form:
solid: particulate/powder
Details on test material:
- Name of the test material: Tetrasodium 7-amino-4-hydroxy-3-[(2-methoxy-5-methyl-4-{[2-(sulfonatooxy)ethyl]sulfonyl}phenyl)diazenyl]-8-[(2-sulfonato-4-{[2-(sulfonatooxy)ethyl]sulfonyl}phenyl)diazenyl]naphthalene-2-sulfonate
- Molecular formula: C28H25N5Na4O20S6
- Molecular weight: 1035.87 g/mol
- Substance type: Organic
- Physical state: Solid
- Purity: 100%
- Physical appearance: Black powder with reddish tinge

Results and discussion

pH value
Key result
pH value:
4.4
Temp.:
26.3 °C
Concentration:
1 vol%

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

 

26.3°C

 Mean pH (RESULT)

 

4.4 

 Inference

1. Acidic

2. Basic

3. Neutral

 Acidic

Applicant's summary and conclusion

Conclusions:
The pH of test chemical was determined. The study was performed in accordance with OECD Guideline 122 (Determination of pH, Acidity and Alkalinity). The mean pH of the 1% w/v test chemical solution was determined with the help of digital pH meter. The mean pH was determined to be 4.4 at 26.3°C.
Executive summary:

The pH of test chemical was determined. The study was performed in accordance with OECD Guideline 122 (Determination of pH, Acidity and Alkalinity). The mean pH of the 1% w/v test chemical solution was determined with the help of digital pH meter. The mean pH was determined to be 4.4 at 26.3°C. Thus, test chemical was considered to be acidic in nature.

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