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EC number: 240-539-0 | CAS number: 16484-77-8
Oxidation reduction potential
Administrative data
Link to relevant study record(s)
- Endpoint:
- oxidation reduction potential
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Study period:
- July 1991 to December 1991
- Reliability:
- 2 (reliable with restrictions)
- Rationale for reliability incl. deficiencies:
- comparable to guideline study with acceptable restrictions
- Qualifier:
- according to guideline
- Guideline:
- other: EPA Guidelines, Subdivision D, Paragraph 63-14
- Deviations:
- no
- GLP compliance:
- yes
- Contact with:
- other: Carbon dioxide, monoammonium phosphate, zinc, iron, potassium bromate and potassium permanganate in both non-aqueous and aqueous systems.
- Duration of test (contact time):
- 42 h
- Remarks on result:
- not measured/tested
- Conclusions:
- Under the conditions of the study the test material is stable against most of the chemicals tested. Only with strong oxidising agents like KMnO4 it will be oxidised in an aqueous system. In an aqueous system the test material is able to reduce strong oxidising agents like KMnO4.
- Executive summary:
The oxidation reduction potential of the test material was assessed according to EPA Guidelines, Subdivision D, Paragraph 63 -14 and in compliance with GLP.
In the first part the test material and the solid substances were brought into contact within test tubes. The visually observable effects are described. In the second part changes in temperature are registered for the test material when it was brought into contact with different chemicals. The control experiment was performed by mixing the teat material with water only. The recorded temperature followed the movement of room temperature within a time interval of 42 hours.
At room temperature of 25 – 35 °C the test material is stable against the reducing agents Fe and Zn and against the oxidising agent KBrO3. With the stronger oxidising agent KMnO4 in aqueous solution it will be oxidised. At room temperature of 25 – 35 °C KmNO4 in aqueous solution will be reduced by the test material. Under the same conditions (NH2)HPO4 or CO2 does not react with the test material.
Under the conditions of the study the test material is stable against most of the chemicals tested. Only with strong oxidising agents like KMnO4 it will be oxidised in an aqueous system. In an aqueous system the test material is able to reduce strong oxidising agents like KMnO4.
Reference
In all the experiments in the non-aqueous system the mixtures remained unchanged.
In a time interval of 42 hours the measured temperature of the control (aqueous system) followed the movement of room temperature between 25 °C – 35 °C.
In the aqueous suspension the test material has no oxidising properties against reducing agents like Fe or Zn.
The suspended test material has no reducing properties against the oxidising agent KBrO3, in aqueous solution.
In the aqueous system the mixture of the test material with KMnO4 indicates an immediately starting exothermic reaction with a temperature rise from 25 °C to 43 °C within 80 minutes.
MnO2 has been developed during the reaction and the mixture has formed foam.
This indicates that only the stronger oxidising KMnO4 in aqueous solution has been reduced by the test material.
No reaction of the test material has been detected with (NH4)H2PO4 or CO2 in suspension with water.
Description of key information
Redeker (1991)
Under the conditions of the study the test material is stable against most of the chemicals tested. Only with strong oxidising agents like KMnO4 it will be oxidised in an aqueous system. In an aqueous system the test material is able to reduce strong oxidising agents like KMnO4.
Key value for chemical safety assessment
Additional information
Redeker (1991)
The oxidation reduction potential of the test material was assessed according to EPA Guidelines, Subdivision D, Paragraph 63 -14 and in compliance with GLP. The study was awarded a reliability score of 2 in accordance with the criteria set forth by Klimisch et al. (1997).
In the first part the test material and the solid substances were brought into contact within test tubes. The visually observable effects are described. In the second part changes in temperature are registered for the test material when it was brought into contact with different chemicals. The control experiment was performed by mixing the teat material with water only. The recorded temperature followed the movement of room temperature within a time interval of 42 hours.
At room temperature of 25 – 35 °C the test material is stable against the reducing agents Fe and Zn and against the oxidising agent KBrO3. With the stronger oxidising agent KMnO4 in aqueous solution it will be oxidised. At room temperature of 25 – 35 °C KmNO4 in aqueous solution will be reduced by the test material. Under the same conditions (NH2)HPO4 or CO2 does not react with the test material.
Under the conditions of the study the test material is stable against most of the chemicals tested. Only with strong oxidising agents like KMnO4 it will be oxidised in an aqueous system. In an aqueous system the test material is able to reduce strong oxidising agents like KMnO4.
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