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Physical & Chemical properties

pH

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Administrative data

Endpoint:
pH
Type of information:
experimental study
Adequacy of study:
key study
Study period:
28/04/2016 - 28/04/2016
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 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 determination of test item 3-methyl-6-(p-toluidino)-3H-dibenz[f,ij]isoquinoline-2,7-dione (CAS No. 81-39-0) was done as per the test guideline OECD 122 by using digital pH meters.
GLP compliance:
not specified

Test material

Constituent 1
Chemical structure
Reference substance name:
3-methyl-6-(p-toluidino)-3H-dibenz[f,ij]isoquinoline-2,7-dione
EC Number:
201-346-7
EC Name:
3-methyl-6-(p-toluidino)-3H-dibenz[f,ij]isoquinoline-2,7-dione
Cas Number:
81-39-0
Molecular formula:
C24H18N2O2
IUPAC Name:
3-methyl-6-(p-toluidino)-3H-dibenz[f,ij]isoquinoline-2,7-dione
Test material form:
solid: particulate/powder
Details on test material:
- Name of test material (as cited in study report): 3-methyl-6-(p-toluidino)-3H-dibenz[f,ij]isoquinoline-2,7-dione- Molecular formula :C24H18N2O2- Molecular weight :366.418 g/mol- Smiles notation :O=c1n(c2c3c(c(Nc4ccc(cc4)C)cc2)C(=O)c2c(cccc2)c3c1)C- InChl :1S/C24H18N2O2/c1-14-7-9-15(10-8-14)25-19-11-12-20-22-18(13-21(27)26(20)2)16-5-3-4-6-17(16)24(28)23(19)22/h3-13,25H,1-2H3- Substance type:Organic- Physical state:Solid powder (red)
Specific details on test material used for the study:
- Name of test material (as cited in study report): 3-methyl-6-(p-toluidino)-3H-dibenz[f,ij]isoquinoline-2,7-dione- Molecular formula :C24H18N2O2- Molecular weight :366.418 g/mol- Smiles notation :O=c1n(c2c3c(c(Nc4ccc(cc4)C)cc2)C(=O)c2c(cccc2)c3c1)C- InChl :1S/C24H18N2O2/c1-14-7-9-15(10-8-14)25-19-11-12-20-22-18(13-21(27)26(20)2)16-5-3-4-6-17(16)24(28)23(19)22/h3-13,25H,1-2H3- Substance type:Organic- Physical state:Solid powder (red)

Reagents

Reagent:
water

Results and discussion

pH value
Key result
pH value:
6.96
Temp.:
32.6 °C
Concentration:
1 vol%
Remarks on result:
other: Near about neutral pH

Any other information on results incl. tables

TEST RESULTS

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

-

32.6°C

pH (RESULT)

 

-

6.96

Inference

1.   Acidic

2.   Basic

3.   Neutral

 

 

Acidic

Applicant's summary and conclusion

Conclusions:
The pH of 1% w/v aqueous dispersion of the test item, 3-methyl-6-(p-toluidino)-3H-dibenz[f,ij]isoquinoline-2,7-dione (CAS No. 81-39-0) was determined to be 6.96 at 32.6°C.
Executive summary:

The pH determination of test item, 3-methyl-6-(p-toluidino)-3H-dibenz[f,ij]isoquinoline-2,7-dione (CAS No. 81-39-0) was done following OECD guideline 122. pH of 1% w/v aqueous dispersion was measured with the help of pH meter and it was observed to be 6.96 at 32.6°C.