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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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:
other: Experimental test result performed using standard OECD 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 of an aqueous solution or dispersion in water is determined with a pH measurement interface equipped with an appropriate electrode system.
GLP compliance:
not specified

Test material

Constituent 1
Chemical structure
Reference substance name:
1,8-bis[(4-methylphenyl)amino]anthraquinone
EC Number:
201-398-0
EC Name:
1,8-bis[(4-methylphenyl)amino]anthraquinone
Cas Number:
82-16-6
Molecular formula:
C28H22N2O2
IUPAC Name:
1,8-bis[(4-methylphenyl)amino]-9,10-dihydroanthracene-9,10-dione
Test material form:
solid: particulate/powder
Remarks:
migrated information: powder
Details on test material:
- Name of test material (as cited in study report): 1,8-bis[(4-methylphenyl)amino]anthraquinone
- Substance type: Organic
- Physical state: Solid

Results and discussion

pH value
pH value:
6.25
Temp.:
34 °C
Concentration:
1 other: % w/v

Any other information on results incl. tables

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

-

34°C

pH (RESULT)

 

-

6.25

Inference

1.   Acidic

2.   Basic

3.   Neutral

 

 

Acidic

Applicant's summary and conclusion

Conclusions:
The pH determination of test item1,8-bis[(4-methylphenyl)amino ]anthraquinone (CAS No. 82-16-6) was done following OECD guideline 122. pH of 1% w/v dispersion was measured with the help of pH meter and it was observed to be 6.25 at 34 °C.
Executive summary:

The pH determination of test item1,8-bis[(4-methylphenyl)amino ]anthraquinone(CAS No. 82-16-6) was done as per the test guideline OECD 122. The pH of the test solution was determined with the help ofdigitalpH meter.The pH was found to be 6.25 at 34 °C.