Registration Dossier
Registration Dossier
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EC number: 238-925-9 | CAS number: 14858-73-2
Phototransformation in air
Administrative data
- Endpoint:
- phototransformation in air
- Type of information:
- calculation (if not (Q)SAR)
- Remarks:
- Migrated phrase: estimated by calculation
- Adequacy of study:
- key study
- Reliability:
- 2 (reliable with restrictions)
- Rationale for reliability incl. deficiencies:
- other: generally accepted calculation method
Data source
Reference
- Reference Type:
- other: unpublished calculation
- Title:
- Unnamed
- Year:
- 2 007
Materials and methods
Test guideline
- Qualifier:
- no guideline followed
- Principles of method if other than guideline:
- The photodegradation of Bis(2-ethylhexyl) carbonate in air via OH radicals was calculated using EPIWIN v3.20, AOPWIN v1.92.
- GLP compliance:
- no
Test material
- Reference substance name:
- Bis(2-ethylhexyl) carbonate
- EC Number:
- 238-925-9
- EC Name:
- Bis(2-ethylhexyl) carbonate
- Cas Number:
- 14858-73-2
- Molecular formula:
- C17H34O3
- IUPAC Name:
- bis(2-ethylhexyl) carbonate
Constituent 1
Study design
- Estimation method (if used):
- PHOTOCHEMICAL REACTION WITH OH RADICALS
- Concentration of OH radicals: 5 x 10E5 radicals/cm³ (24-h d)
- Degradation rate constant: 21.8130 x 10E-12 cm³/molecule x sec
- Temperature for which rate constant was calculated: 25°C
- Computer programme:EPIWIN v3.20, AOPWIN v1.92
Results and discussion
% Degradation
- % Degr.:
- 50
- Sampling time:
- 17.7 h
- Test condition:
- 25°C
Any other information on results incl. tables
The photodegradation of Bis(2-ethylhexyl) carbonate in air via OH radicals was calculated using EPIWIN v3.20, AOPWIN v1.92. Based on a OH radical concentration of 5 x 10E5 radicals/cm³ (24 -h d) and a reaction rate constant k(OH)=21.8130 x 10E-12 cm³/molecule x sec an atmospheric half-life t1/2=17.7 h at 25°C can be calculated. Thus, Bis(2-ethylhexyl) carbonate entering the atmosphere will be relatively quickly photodegraded by reaction with OH radicals.
Applicant's summary and conclusion
- Validity criteria fulfilled:
- not applicable
- Conclusions:
- The photodegradation of di-(2-ethylhexyl)carbonate in air via OH radicals was calculated using EPIWIN v3.20, AOPWIN v1.92. Based on a OH radical concentration of 5 x 10E5 radicals/cm³ (24 -h d) and a reaction rate constant k(OH)=21.8130 x 10E-12 cm³/molecule x sec an atmospheric half-life t1/2=17.7 h at 25°C can be calculated. Thus, di-(2-ethylhexyl)carbonate entering the atmosphere will be relative quickly photodegraded by reaction with OH radicals.
- Executive summary:
The photodegradation of di-(2-ethylhexyl)carbonate in air via OH radicals was calculated using EPIWIN v3.20, AOPWIN v1.92. Based on a OH radical concentration of 5 x 10E5 radicals/cm³ (24 -h d) and a reaction rate constant k(OH)=21.8130 x 10E-12 cm³/molecule x sec an atmospheric half-life t1/2=17.7 h at 25°C can be calculated. Thus, di-(2-ethylhexyl)carbonate entering the atmosphere will be relative quickly photodegraded by reaction with OH radicals.
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