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EC number: 219-091-5 | CAS number: 2353-45-9
pH
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 data using the standard method of analysis
Data source
Reference
- Reference Type:
- study report
- Title:
- Unnamed
- Year:
- 2 015
- Report date:
- 2015
Materials and methods
Test guideline
- Qualifier:
- according to guideline
- Guideline:
- other: OECD 122
- 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 substance name:
- Dihydrogen (ethyl)[4-[4-[ethyl(3-sulphonatobenzyl)amino](4-hydroxy-2-sulphonatobenzhydrylidene]cyclohexa-2,5-dien-1-ylidene](3-sulphonatobenzyl)ammonium, disodium salt
- EC Number:
- 219-091-5
- EC Name:
- Dihydrogen (ethyl)[4-[4-[ethyl(3-sulphonatobenzyl)amino](4-hydroxy-2-sulphonatobenzhydrylidene]cyclohexa-2,5-dien-1-ylidene](3-sulphonatobenzyl)ammonium, disodium salt
- Cas Number:
- 2353-45-9
- Molecular formula:
- C37H36N2O10S3.2Na
- IUPAC Name:
- disodium 2-({4-[ethyl(3-sulfonatobenzyl)amino]phenyl}{4-[ethyl(3-sulfonatobenzyl)iminio]cyclohexa-2,5-dien-1-ylidene}methyl)-5-hydroxybenzenesulfonate
- Test material form:
- solid: particulate/powder
- Remarks:
- migrated information: powder
- Details on test material:
- - Name of test material (as cited in study report): Dihydrogen (ethyl)[4-[4-[ethyl(3-sulphonatobenzyl)amino](4-hydroxy-2-sulphonatobenzhydrylidene]cyclohexa-2,5-dien-1-ylidene](3-sulphonatobenzyl)ammonium, disodium salt- Substance type: Organic- Physical state: Solid
Constituent 1
Results and discussion
pH value
- pH value:
- 4
- Temp.:
- 25 °C
- Concentration:
- 1 vol%
Applicant's summary and conclusion
- Conclusions:
- The pH of 1% w/v aqueous solution of the test item Dihydrogen(ethyl)[4-[4-[ethyl(3-sulphonatobenzyl)amino](4-hydroxy-2-sulphonatobenzhydrylidene]cyclohexa-2,5-dien-1-ylidene](3-sulphonatobenzyl)ammonium,disodium salt (CAS No. 2353-45-9) was 4.0 at 29.8 °C.
- Executive summary:
The pH determination of test item Dihydrogen(ethyl)[4-[4-[ethyl(3-sulphonatobenzyl)amino](4-hydroxy-2-sulphonatobenzhydrylidene]cyclohexa-2,5-dien-1-ylidene](3-sulphonatobenzyl)ammonium,disodium salt (CAS No.2353-45-9) was done following OECD guideline 122. pH of 1% w/v aqueous solution was measured with the help of pH probe and it was observed to be 4.0 at 29.8°C.
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