Registration Dossier

Administrative data

Endpoint:
pH
Type of information:
experimental study
Adequacy of study:
key study
Study period:
11/8/2016 - 11/8/2016
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 guideline.

Data source

Reference
Reference Type:
study report
Title:
Unnamed
Year:
2016
Report Date:
2016

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:
The pH of an aqueous solution or dispersion in water is determined with a pH measurement interface equipped with an appropriate electrode system.
GLP compliance:
no

Test material

Reference
Name:
Unnamed
Type:
Constituent
Type:
Constituent
Test material form:
solid: crystalline
Details on test material:
- Name of test material (as cited in study report): 6- aminonaphthalene-2-sulphonic acid
- Substance type: Organic
- Physical state: Solid

Results and discussion

pH value
Key result
pH value:
3.63
Temp.:
29 °C
Concentration:
1 other: % w/v
Remarks on result:
other: Acidic

Any other information on results incl. tables

Method Details

Observations

Remarks if, any

Temperature of 1% w/v test solution

-

29°C

 

mean pH (RESULT)

 

-

4.60

Inference

1.  Acidic

2.   Basic

3.   Neutral

 

 

Acidic

 

Applicant's summary and conclusion

Conclusions:
The pH determination of test chemical was done following OECD guideline 122. The mean pH of 1% w/v dispersion was measured with the help of digital pH meter. The mean pH was determined to be 3.63 at 29 °C.
Executive summary:

The pH determination of test chemical was done following OECD guideline 122. The mean pH of 1% w/v dispersion was measured with the help of digital pH meter. The mean pH was determined to be 3.63 at 29 °C. This value indicates that the substance is acidic in nature.