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 result using the standard method of analysis

Data source

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

Materials and methods

Test guideline
Qualifier:
according to guideline
Guideline:
OECD Guideline 122 (Determination of pH, Acidity and Alkalinity)
Principles of method if other than guideline:
The pH determination of test item was done as per the test guideline OECD 122. The pH of the test solution was determined with the help of pH meter.
GLP compliance:
no

Test material

Constituent 1
Chemical structure
Reference substance name:
Trisodium 8-hydroxypyrene-1,3,6-trisulphonate
EC Number:
228-783-6
EC Name:
Trisodium 8-hydroxypyrene-1,3,6-trisulphonate
Cas Number:
6358-69-6
Molecular formula:
C16H10O10S3.3Na
IUPAC Name:
trisodium 8-hydroxypyrene-1,3,6-trisulfonate
Constituent 2
Reference substance name:
Tri sodium 8-hydroxypyrene-1,3,6-trisulphonate
IUPAC Name:
Tri sodium 8-hydroxypyrene-1,3,6-trisulphonate
Test material form:
solid: particulate/powder
Remarks:
migrated information: powder
Details on test material:
CAS No: 6358-69-6
Chemical Name: Tri sodium 8-hydroxypyrene-1,3,6-trisulphonate (Common Name: D&C Green 8)
Nature of chemical: Organic

Results and discussion

pH value
Key result
pH value:
5.32
Temp.:
31.6 °C
Concentration:
1 vol%
Remarks on result:
other: Moderately acidic

Any other information on results incl. tables

Method Details

Observations

Remarks if, any

Guideline

OECD 122

 

 

Method

 

Digital pH meter

 

Principle of method

The 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 solution

-

31.6 °C

pH (RESULT)

 

-

5.32

Inference

1.   Acidic

2.   Basic

3.   Neutral

 

 

Acidic

Applicant's summary and conclusion

Conclusions:
The pH of 1% w/v aqueous solution of the test item was 5.32 at 31.6°C indicating that the chemical is moderately acidic.
Executive summary:

The pH of 1% w/v aqueous solution of the test item was 5.32 at 31.6°C indicating that the chemical is moderately acidic.