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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
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:
2014

Materials and methods

Test guideline
Qualifier:
according to guideline
Guideline:
OECD Guideline 122 (Determination of pH, Acidity and Alkalinity)
GLP compliance:
no

Test material

Constituent 1
Chemical structure
Reference substance name:
Hexasodium 2,2'-[vinylenebis[(3-sulphonato-4,1-phenylene)imino[6-(diethylamino)-1,3,5-triazine-4,2-diyl]imino]]bis(benzene-1,4-disulphonate)
EC Number:
255-217-5
EC Name:
Hexasodium 2,2'-[vinylenebis[(3-sulphonato-4,1-phenylene)imino[6-(diethylamino)-1,3,5-triazine-4,2-diyl]imino]]bis(benzene-1,4-disulphonate)
Cas Number:
41098-56-0
Molecular formula:
C40H44N12O18S6.6Na
IUPAC Name:
hexasodium 2,2'-(ethene-1,2-diylbis{(3-sulfonato-4,1-phenylene)imino[6-(diethylamino)-1,3,5-triazine-4,2-diyl]imino})dibenzene-1,4-disulfonate
Test material form:
solid
Details on test material:
- Name of the test chemical: Hexasodium 2,2' - (vinylenebis((3-sulphonato-4,1-phenylene) imino (6-(diethylamino) - 1,3,5 -triazine -4,2-diyl)imino)) bis (benzene -1,4-disulphonate)
- Molceular formula: C40H38N12O18S6.6Na
- Molecular weight: 1305.1422 g/mol
- Smiles: CCN(CC)c1nc(nc(n1)Nc2cc(ccc2S(=O)(=O)[O-])S(=O)(=O)[O-])Nc3ccc(c(c3)S(=O)(=O)[O-])/C=C/c4ccc(cc4S(=O)(=O)[O-])Nc5nc(nc(n5)N(CC)CC)Nc6cc(ccc6S(=O)(=O)[O-])S(=O)(=O)[O-].[Na+].[Na+].[Na+].[Na+].[Na+].[Na+]

Results and discussion

pH value
Key result
pH value:
7.7
Temp.:
28 °C
Concentration:
1 vol%
Remarks on result:
other: Basic

Any other information on results incl. tables

Table:

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

-

280C

pH (RESULT)


-

7.7

Inference

  1. Acidic

  2. Basic

  3. Neutral



Basic

Applicant's summary and conclusion

Conclusions:
The pH determination of test chemical was done as per the test guideline OECD 122. The mean pH of the test solution was determined with the help of digital pH meter. The pH of 1% w/v solution of the test chemical was determined to be 7.7 at 28 °C, which indicates that the test chemical was basic in nature.
Executive summary:

The pH determination of test chemical was done as per the test guideline OECD 122. The mean pH of the test solution was determined with the help of digital pH meter. The pH of 1% w/v solution of the test chemical was determined to be 7.7 at 28 °C, which indicates that the test chemical was basic in nature.

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