Registration Dossier
Registration Dossier
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EC number: 221-374-3 | CAS number: 3081-01-4
Additional information on environmental fate and behaviour
Administrative data
- Endpoint:
- additional information on environmental fate and behaviour
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Study period:
- 2012
- Reliability:
- 2 (reliable with restrictions)
- Rationale for reliability incl. deficiencies:
- other: Reliable with restrictions.
Data source
Referenceopen allclose all
- Reference Type:
- publication
- Title:
- Polymer Stabilization and Degradation (ACS Symosium Series 280)
- Author:
- Klemchuk, P.P.
- Year:
- 1 984
- Bibliographic source:
- CIBA-GEIGY Corporation, American Chemical Society, Washington, D.C.
- Reference Type:
- publication
- Title:
- Antioxidant, antidegradant depletion in tire compounds
- Author:
- Ignatz-Hoover, F.
- Year:
- 2 012
- Bibliographic source:
- Rubber & Plastics News (March 19, 2012)
Materials and methods
- Principles of method if other than guideline:
- no guideline followed
- GLP compliance:
- no
- Type of study / information:
- Mechanistic studies concerning the oxidation behaviour of paraphenylenediamines.
Test material
- Reference substance name:
- Paraphenylenediamines, either linked to phenyl and alkyl groups (e.g. 7PPD) or to two alkyl groups (e.g. 77PD).
- IUPAC Name:
- Paraphenylenediamines, either linked to phenyl and alkyl groups (e.g. 7PPD) or to two alkyl groups (e.g. 77PD).
Constituent 1
Results and discussion
Applicant's summary and conclusion
- Executive summary:
In mechanistic studies, the reaction of paraphenylenediamines with oxygene and ozone radicals was studied.
- Reaction with oxygene: Formation of quinone-diimines followed by oxidation of the nitrogene forming N-oxides.
- Quninone-diimines may also react to mono-quinoneimines which might further react to p-benzoquinone
- Reaction with ozone: Addition of ozone to nitrogene with cleavage of the C-N structure forming N-oxides. Quinone-iminines and N-oxides are reactive species which might further react forming higher and more complex molecules.
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