1,4-bis(p-tolylamino)anthraquinone

pH

Administrative data

Endpoint:

pH

Type of information:

experimental study

Adequacy of study:

key study

Study period:

23/2/2016 -23/2/2016

Reliability:

1 (reliable without restriction)

Rationale for reliability incl. deficiencies:

test procedure in accordance with generally accepted scientific standards and described in sufficient detail

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:

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

Test material information

Constituent 1

Reference substance name:

1, 4-bis(p-tolylamino)anthraquinone

IUPAC Name:

1, 4-bis(p-tolylamino)anthraquinone

Constituent 2

Reference substance name:

1,4-bis(p-tolylamino)anthraquinone

EC Number:

204-909-5

EC Name:

1,4-bis(p-tolylamino)anthraquinone

Cas Number:

128-80-3

Molecular formula:

C28H22N2O2

IUPAC Name:

1,4-bis[(4-methylphenyl)amino]-9,10-anthraquinone

Test material form:

solid: particulate/powder

Remarks:

migrated information: powder

Details on test material:

Name of test material: 1, 4-bis(p-tolylamino)anthraquinone
Substance type: Organic
Physical state: Solid

Reagents

Reagent:

water

Results and discussion

pH value

Key result

pH value:

5.71

Temp.:

32 °C

Remarks on result:

other: 1% w/v dispersion of the test item

Any other information on results incl. tables

TEST RESULTS

Method Details		Observations	Remarks if, any
Guideline	OECD 122
Method	pH measurement interface Microlab FS-524 and pH probe
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	-	32°C
pH (RESULT)	-	5.71
Inference	1.   Acidic 2.   Basic 3.   Neutral	Acidic

Applicant's summary and conclusion

Conclusions:

The pH of 1% w/v dispersion of the test item was determine to be 5.71 at 32°C.

Executive summary:

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 digital pH meter. The pH was determined to be 5.71 at 32 °C. This value indicates that test substance is acidic in nature.