Registration Dossier
Registration Dossier
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EC number: 284-366-9 | CAS number: 84852-53-9
Phototransformation in air
Administrative data
- Endpoint:
- phototransformation in air
- Type of information:
- other: publication
- Adequacy of study:
- supporting study
- Reliability:
- 2 (reliable with restrictions)
- Rationale for reliability incl. deficiencies:
- other: Non-GLP, non-Guideline study. Test material not characterized.
Data source
Reference
- Reference Type:
- publication
- Title:
- Photolysis studies of technical decabromodiphenyl ether (DecaBDE) and ethane (DeBDEethane) in plastics under natural sunlight.
- Author:
- Kajiwara et al.
- Year:
- 2 008
- Bibliographic source:
- Environ. Sci. Technol. 42, 4404-4409.
Materials and methods
Test guideline
- Qualifier:
- no guideline followed
- Principles of method if other than guideline:
- High impact polystyrene plastic formulated with DBDPEthane was ground. The powder was exposed to natural sunlight for up to 224 d by placing the powder in glass tubes on a rooftop. The tubes rotated throughout the day and were shaken by hand once per week. The powder was analyzed at intervals for DBDPEthane content.
- GLP compliance:
- no
Test material
- Reference substance name:
- 1,1'-(ethane-1,2-diyl)bis[pentabromobenzene]
- EC Number:
- 284-366-9
- EC Name:
- 1,1'-(ethane-1,2-diyl)bis[pentabromobenzene]
- Cas Number:
- 84852-53-9
- Molecular formula:
- C14H4Br10
- IUPAC Name:
- 1,2,3,4,5-pentabromo-6-[2-(2,3,4,5,6-pentabromophenyl)ethyl]benzene
- Test material form:
- solid: pellets
- Details on test material:
- Test article obtained from Weifang Yucheng Chemical Co., Ltd, Weifang, China
Constituent 1
Study design
- Light source:
- sunlight
- Details on light source:
- Natural sunlight exposure from Sept 2006 to May 2007 in Tsukuba, Japan
Results and discussion
% Degradation
- % Degr.:
- 0
- Sampling time:
- 224 d
- Test condition:
- crushed polymer in sunlight
- Transformation products:
- no
Any other information on results incl. tables
Kajiwara et al. (2008) reported DBDPEthane did not undergo photodegradation when a pulverized high impact polystyrene resin containing the commercial product was exposed to sunlight irradiation for 224 days. This is a worst case scenario for photolysis-in-plastic given the plastic was ground prior to sunlight exposure and rotated throughout the 224 d sunlight exposure to ensure maximum exposure of the plastic particles to sunlight.
Applicant's summary and conclusion
- Validity criteria fulfilled:
- not applicable
- Conclusions:
- Kajiwara et al. (2008) reported DBDPEthane did not undergo photodegradation when a pulverized high impact polystyrene resin containing the commercial product was exposed to sunlight irradiation for 224 days. This is a worst case scenario for photolysis-in-plastic given the plastic was ground prior to sunlight exposure and rotated throughout the 224 d sunlight exposure to ensure maximum exposure of the plastic particles to sunlight.
- Executive summary:
Kajiwara et al. (2008) reported DBDPEthane did not undergo photodegradation when a pulverized high impact polystyrene resin containing the commercial product was exposed to sunlight irradiation for 224 days. This is a worst case scenario for photolysis-in-plastic given the plastic was ground prior to sunlight exposure and rotated throughout the 224 d sunlight exposure to ensure maximum exposure of the plastic particles to sunlight.
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