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Administrative data

Endpoint:
oxidising properties
Type of information:
experimental study
Adequacy of study:
key study
Study period:
24.04.2013 - 10.05.2013
Reliability:
1 (reliable without restriction)

Data source

Reference
Reference Type:
study report
Title:
Unnamed
Year:
2013
Report date:
2013

Materials and methods

Test guideline
Qualifier:
according to guideline
Guideline:
other:
Principles of method if other than guideline:
Redox titrations are based on a reduction-oxidation reaction between an oxidizing agent and a reducing agent. A potentiometer or a redox indicator is usually used to determine the endpoint of the titration. In permanganometry a slight faint persisting pink color signals the endpoint of the titration because of the color of the excess oxidizing agent potassium permanganate
GLP compliance:
no

Test material

Constituent 1
Chemical structure
Reference substance name:
5-aminonaphthalene-2-sulphonic acid
EC Number:
204-351-2
EC Name:
5-aminonaphthalene-2-sulphonic acid
Cas Number:
119-79-9
Molecular formula:
C10H9NO3S
IUPAC Name:
5-aminonaphthalene-2-sulfonic acid
Test material form:
other: Amorphous
Details on test material:
- Name of test material: 5-aminonaphthalene-2-sulphonic acid
- Substance type: Organic
- Physical state: solid

Results and discussion

Test results (Oxidising liquids)
Sample tested:
other: not specified (migrated information) ml or mg of KMnO4
Parameter:
other: ml or mg of KMnO4
Result:
370.08 other: mg/100g
Test results (Oxidising solids)
Sample tested:
other: not specified (migrated information) ml or mg of KMnO4
Parameter:
other: ml or mg of KMnO4
Result:
370.08 other: mg/100g

Applicant's summary and conclusion

Interpretation of results:
other: mild oxidation potential
Conclusions:
5-aminonaphthalene-2-sulphonic acid was found to be oxidizing since 370.08 ml of KMnO4 was required for getting the end point of the redox titration for 100 g of 5-aminonaphthalene-2-sulphonic acid.
Executive summary:

5-aminonaphthalene-2-sulphonic acid was found to be oxidizing since370.08 ml of KMnO4 was required for getting the end point of the redox titration for 100 g of 5-aminonaphthalene-2-sulphonic acid.

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