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Diss Factsheets

Administrative data

Link to relevant study record(s)

Reference
Endpoint:
oxidising solids
Type of information:
experimental study
Adequacy of study:
key study
Study period:
23.03.2013 -09.04.2013
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
comparable to guideline study
Justification for type of information:
Experimental test result performed using standard test guidelines
Qualifier:
according to guideline
Guideline:
other: as mentioned below
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
Other quality assurance:
ISO/IEC 17025 (General requirements for the competence of testing and calibration laboratories)
Specific details on test material used for the study:
- Name of test material: 4-(4-Aminophenylazo)benzenesulphonic acid
- Molecular formula: C12H11N3O3S
- Molecular weight: 277.303 g/mol
- Smiles notation: S(c1ccc(\N=N\c2ccc(N)cc2)cc1)(O)(=O)=O
- InChl: 1S/C12H11N3O3S/c13-9-1-3-10(4-2-9)14-15-11-5-7-12(8-6-11)19(16, 17)18/h1-8H,13H2,(H,16,17,18)/b15-14+
- Substance type: organic
- Physical state: Solid
Contact with:
potassium permanganate
Key result
Sample tested:
other: not specified
Parameter:
other: Redox Titration
Result:
371.76 other: ml/100g
Remarks on result:
other: not specified
Interpretation of results:
other: mild oxidising property
Conclusions:
The test chemical was determined to have mild oxidising property since 371.76 ml of KMnO4 was required for getting the end point of the redox titration for 100 g of test chemical.


Executive summary:

The test chemical was determined to have mild oxidising property since 371.76 ml of KMnO4 was required for getting the end point of the redox titration for 100 g of test chemical.

This oxidation potential was not considered strong enough for for classifying the chemical as an oxidising solid. Thus, the chemical is considered as non-oxidising for the purpose of chemical safety report and classification.

Description of key information

The test chemical was determined to have mild oxidising property since 371.76 ml of KMnO4 was required for getting the end point of the redox titration for 100 g of test chemical.

This oxidation potential was not considered strong enough for for classifying the chemical as an oxidising solid. Thus, the chemical is considered as non-oxidising for the purpose of chemical safety report and classification.

Key value for chemical safety assessment

Oxidising properties:
non oxidising

Additional information

The test chemical was determined to have mild oxidising property since 371.76 ml of KMnO4 was required for getting the end point of the redox titration for 100 g of test chemical.

This oxidation potential was not considered strong enough for for classifying the chemical as an oxidising solid. Thus, the chemical is considered as non-oxidising for the purpose of chemical safety report and classification.

Justification for classification or non-classification

The test chemical was determined to have mild oxidising property since 371.76 ml of KMnO4 was required for getting the end point of the redox titration for 100 g of test chemical.

This oxidation potential was not considered strong enough for for classifying the chemical as an oxidising solid. Thus, the chemical is considered as non-oxidising for the purpose of chemical safety report and classification.