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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.

The new ECHA CHEM database has been released by ECHA, and it now contains all REACH registration data. There are more details on the transition of ECHA's published data to ECHA CHEM here.

Diss Factsheets

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.