Registration Dossier
Registration Dossier
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EC number: 224-909-9 | CAS number: 4548-53-2
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 Result
Data source
Reference
- Reference Type:
- study report
- Title:
- Unnamed
- Year:
- 2 016
- Report date:
- 2016
Materials and methods
Test guideline
- Qualifier:
- according to guideline
- Guideline:
- other:
- Principles of method if other than guideline:
- The pH determination of test item Disodium 3-[(2,4-dimethyl-5-sulphonatophenyl)azo]-4-hydroxynaphthalene-1-sulphonate (CAS No. 4548-53-2) was done as per the test guideline OECD 122.
- GLP compliance:
- no
Test material
- Reference substance name:
- Disodium 3-[(2,4-dimethyl-5-sulphonatophenyl)azo]-4-hydroxynaphthalene-1-sulphonate
- EC Number:
- 224-909-9
- EC Name:
- Disodium 3-[(2,4-dimethyl-5-sulphonatophenyl)azo]-4-hydroxynaphthalene-1-sulphonate
- Cas Number:
- 4548-53-2
- Molecular formula:
- C18H16N2O7S2.2Na
- IUPAC Name:
- disodium 3-[(2,4-dimethyl-5-sulfonatophenyl)diazenyl]-4-hydroxynaphthalene-1-sulfonate
- Test material form:
- solid: particulate/powder
- Remarks:
- migrated information: powder
- Details on test material:
- CAS No: 4548-53-2Name of the chemical: Disodium 3-[(2,4-dimethyl-5-sulphonatophenyl)azo]-4-hydroxynaphthalene-1-sulphonate (Common name: FD&C Red 4)Nature of chemical: Organic
Constituent 1
Results and discussion
pH value
- pH value:
- 6.97
- Temp.:
- 30 °C
- Concentration:
- 1 vol%
- Remarks on result:
- other: Neutral
Any other information on results incl. tables
The pH determination of test item Disodium 3-[(2,4-dimethyl-5-sulphonatophenyl)azo]-4-hydroxynaphthalene-1-sulphonate (CAS No. 4548-53-2) was done as per the test guideline OECD 122. The pH of the test solution was determined with the help of digitalpH meter. The pH was found to be 6.97 at 30 °C.
Applicant's summary and conclusion
- Conclusions:
- The pH determination of test item Disodium 3-[(2,4-dimethyl-5-sulphonatophenyl)azo]-4-hydroxynaphthalene-1-sulphonate (CAS No. 4548-53-2) was done following OECD guideline 122. pH of 1% w/v aqueous solution was measured with the help of pH meter and it was observed to be 6.97 at 30 °C
- Executive summary:
The pH determination of test item Disodium 3-[(2,4-dimethyl-5-sulphonatophenyl)azo]-4-hydroxynaphthalene-1-sulphonate (CAS No. 4548-53-2) was done following OECD guideline 122. pH of 1% w/vaqueous solutionwas measured with the help of pH meter and it was observed to be6.97 at 30 °C.
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