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EC number: 200-830-5 | CAS number: 75-00-3
Phototransformation in air
Administrative data
Link to relevant study record(s)
- Endpoint:
- phototransformation in air
- Type of information:
- (Q)SAR
- Adequacy of study:
- supporting study
- Reliability:
- 2 (reliable with restrictions)
- Rationale for reliability incl. deficiencies:
- results derived from a valid (Q)SAR model and falling into its applicability domain, with limited documentation / justification
- Principles of method if other than guideline:
- Calculation based on AOPWIN v1.92, Estimation Programs Interface Suite™ for Microsoft® Windows v 4.11. US EPA, United States Environmental Protection Agency, Washington, DC, USA.
- GLP compliance:
- no
- Estimation method (if used):
- PHOTOCHEMICAL REACTION WITH OH RADICALS
- Concentration of OH radicals: 0.5E+06 radicals/cm3
- Degradation rate constant: 0.404 E-12 cm3/molecule-sec
- Temperature for which rate constant was calculated: 25 °C
- Computer programme: AOPWIN v1.92 - DT50:
- 39.725 d
- Test condition:
- calculation based on a 24 h day
- Endpoint:
- phototransformation in air
- Type of information:
- calculation (if not (Q)SAR)
- Remarks:
- Migrated phrase: estimated by calculation
- Adequacy of study:
- supporting study
- Reliability:
- 4 (not assignable)
- Rationale for reliability incl. deficiencies:
- other: Secondary Source, Literature cited in OECD SIDS
- Principles of method if other than guideline:
- Calculation
- GLP compliance:
- no
- Details on test conditions:
- Sensitiser (for indirect photolysis): OH
Sensitiser concentration: 330000 molecule/cm³ - Endpoint:
- phototransformation in air
- Type of information:
- calculation (if not (Q)SAR)
- Remarks:
- Migrated phrase: estimated by calculation
- Adequacy of study:
- supporting study
- Reliability:
- 4 (not assignable)
- Rationale for reliability incl. deficiencies:
- other: Secondary Source, Literature cited in OECD SIDS
- Principles of method if other than guideline:
- Calculation
- GLP compliance:
- no
- Details on test conditions:
- Sensitiser (for indirect photolysis): OH
Sensitiser concentration: 500000 molecule/cm³ - Endpoint:
- phototransformation in air
- Type of information:
- calculation (if not (Q)SAR)
- Remarks:
- Migrated phrase: estimated by calculation
- Adequacy of study:
- supporting study
- Reliability:
- 4 (not assignable)
- Rationale for reliability incl. deficiencies:
- other: Secondary Source, Literature cited in OECD SIDS
- Principles of method if other than guideline:
- Calculation
- GLP compliance:
- no
- Details on test conditions:
- Sensitiser (for indirect photolysis): OH
At 25 deg C. - Endpoint:
- phototransformation in air
- Type of information:
- calculation (if not (Q)SAR)
- Remarks:
- Migrated phrase: estimated by calculation
- Adequacy of study:
- supporting study
- Reliability:
- 4 (not assignable)
- Rationale for reliability incl. deficiencies:
- other: Secondary Source, Literature cited in OECD SIDS
- Principles of method if other than guideline:
- Calculation
- GLP compliance:
- no
- Endpoint:
- phototransformation in air
- Type of information:
- calculation (if not (Q)SAR)
- Remarks:
- Migrated phrase: estimated by calculation
- Adequacy of study:
- supporting study
- Reliability:
- 4 (not assignable)
- Rationale for reliability incl. deficiencies:
- other: Secondary Source, Literature cited in OECD SIDS
- Principles of method if other than guideline:
- Calculation
- GLP compliance:
- no
- Details on test conditions:
- Rate constant reported at 265 K
- Endpoint:
- phototransformation in air
- Type of information:
- calculation (if not (Q)SAR)
- Remarks:
- Migrated phrase: estimated by calculation
- Adequacy of study:
- supporting study
- Reliability:
- 4 (not assignable)
- Rationale for reliability incl. deficiencies:
- other: Secondary Source, calculation cited in OECD SIDS
- Principles of method if other than guideline:
- Atmospheric Oxidation (25 deg C) AopWin v1.87
- GLP compliance:
- no
- Details on test conditions:
- Sensitiser (for indirect photolysis): OH
Sensitiser concentration: 1500000 molecule/cm³
Referenceopen allclose all
For detailed description on the model and its applicability, see "Any other information on materials and methods incl. tables". The estimation is based on a 24 hour day.
Description of key information
A half-life of 39.73 days was estimated for the substance.
Key value for chemical safety assessment
- Half-life in air:
- 39.725 d
Additional information
Experimental results on phototransformation of chloroethane (CAS 75-00-3) are not available. Calculated values using AOPWIN v1.92 indicate that the substance will be photodegraded by reaction with hydroxyl radicals. The estimated half-life for the substance is 39.73 days. Literature data on the atmospheric half-life report a range of 26.5 to 66.8 days (Altshuller, 1980; Atkinson, 1985 and 1994; USEPA: EPI Summary, v2.41; Printup, 1991; Singh et al., 1979; Snelson et al., 1978; USEPA, 1988).
Information on Registered Substances comes from registration dossiers which have been assigned a registration number. The assignment of a registration number does however not guarantee that the information in the dossier is correct or that the dossier is compliant with Regulation (EC) No 1907/2006 (the REACH Regulation). This information has not been reviewed or verified by the Agency or any other authority. The content is subject to change without prior notice.
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