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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:
02/01/2015 - 02/01/2015
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study
Justification for type of information:
Data is from experimental study report

Data source

Reference
Reference Type:
study report
Title:
Unnamed
Year:
2015
Report Date:
2015

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:
A pH meter is essentially a voltmeter with high input impedance which measures the voltage of an electrode sensitive to the hydrogen ion concentration, relative to another electrode which exhibits a constant voltage.
GLP compliance:
no

Test material

Reference
Name:
Unnamed
Type:
Constituent
Test material form:
solid
Details on test material:
- Name of test material: 4,4'-bis(dimethylamino)-4''-(methylamino)trityl alcohol
- Molecular formula: C24H29N3O
- Molecular weight: 375.513
- Smiles: C(c1ccc(cc1)N(C)C)(c1ccc(cc1)N(C)C)(c1ccc (cc1)NC)O
-Inchi: 1S/C24H29N3O/c1-25-21-12-6-18(7-13-21)24 (28, 19-8-14-22(15-9-19)26(2)3)20-10-16-23(17-11-20)27(4) 5/h6-17,25,28H,1-5H3

- Substance type: Organic
- Physical state: solid

Specific details on test material used for the study:
- Name of test material: 4,4'-bis(dimethylamino)-4''-(methylamino)trityl alcohol
- Molecular formula: C24H29N3O
- Molecular weight: 375.513
- Smiles: C(c1ccc(cc1)N(C)C)(c1ccc(cc1)N(C)C)(c1ccc (cc1)NC)O
-Inchi: 1S/C24H29N3O/c1-25-21-12-6-18(7-13-21)24 (28, 19-8-14-22(15-9-19)26(2)3)20-10-16-23(17-11-20)27(4) 5/h6-17,25,28H,1-5H3

- Substance type: Organic
- Physical state: solid

Results and discussion

pH value
Key result
pH value:
7.4
Temp.:
23 °C
Concentration:
1 vol%
Remarks on result:
other: Basic in nature

Any other information on results incl. tables

Method Details

Observations

Guideline

OECD 122

-

Method

 

pH Meter

-

Principle of method

 

 

 

 

 

 

 

A pH meter is essentially a voltmeter with high input impedance which measures the voltage of an electrode sensitive to the hydrogen ion concentration, relative to another electrode which exhibits a constant voltage.

 

 

-

Temperature of 1% w/v test solution

-

23°C

pH (RESULT)

 

-

7.4

Inference

1.   Acidic

2.   Basic

3.   Neutral

 

 

Basic

Applicant's summary and conclusion

Conclusions:
pH of 1% w/v aqueous solution of the test substance 4,4’-bis(dimethylamino)-4’’-(methyl amino)trityl alcohol (CAS No. 561-41-1) is 7.4 at 23°C.
Executive summary:

The pH determination of test substance4,4’-bis(dimethylamino)-4’’-(methyl amino)trityl alcohol(CAS No. 561-41-1) was done as per the test guideline OECD 122. The pH of the test solution was determined with the help ofpH meter. The pH was found to be 7.4 at 23 °C.