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EC number: 204-982-3 | CAS number: 130-23-4
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: Data used from Unique Ecotox Research Laboratory (UERL), Nagpur.
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: OECD 122
- Principles of method if other than guideline:
- The pH of an aqueous solution or dispersion in water is determined with a pH measurement interface equipped with an appropriate electrode system.
- GLP compliance:
- not specified
Test material
- Reference substance name:
- 4-amino-5-hydroxynaphthalene-1,7-disulphonic acid
- EC Number:
- 204-982-3
- EC Name:
- 4-amino-5-hydroxynaphthalene-1,7-disulphonic acid
- Cas Number:
- 130-23-4
- Molecular formula:
- C10H9NO7S2
- IUPAC Name:
- 4-amino-5-hydroxynaphthalene-1,7-disulfonic acid
- Test material form:
- solid: particulate/powder
- Remarks:
- migrated information: powder
- Details on test material:
- - Name of test material :4-amino-5-hydroxynaphthalene-1,7-disulphonic acid
- Molecular formula :C10H9NO7S2
- Molecular weight :319.3131 g/mol
- Smiles notation :c1cc(c2cc(cc(c2c1N)O)S(=O)(=O)O)S(=O)(=O)O
- InChl :1S/C10H9NO7S2/c11-7-1-2-9(20(16,17)18)6-3-5(19(13,14)15)4-8(12)10(6)7/h1-4,12H,11H2,(H,13,14,15)(H,16,17,18)
- Physical state: Solid
- Analytical purity:75.00%
Constituent 1
Results and discussion
pH value
- pH value:
- 2.22
- Temp.:
- 29 °C
- Remarks on result:
- other: No other details available
Applicant's summary and conclusion
- Conclusions:
- The pH determination of test item 4-amino-5-hydroxynaphthalene-1,7-disulphonic acid (CAS No. 130-23-4) was done following OECD guideline 122. The mean pH of 1% w/v solution was measured with the help of pH meter and it was observed to be 2.22 at 29 °C .
- Executive summary:
The pH determination of test item 4-amino-5-hydroxynaphthalene-1,7-disulphonic acid(CAS No. 130-23-4)was done following OECD guideline 122. The mean pH of 1% w/vsolutionwas measured with the help of pH meter and it was observed to be 2.22 at 29 °C .
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