Registration Dossier
Registration Dossier
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EC number: 249-854-8 | CAS number: 29797-40-8
Phototransformation in water
Administrative data
Link to relevant study record(s)
- Endpoint:
- phototransformation in water
- Type of information:
- calculation (if not (Q)SAR)
- Adequacy of study:
- supporting study
- Study period:
- 1995 or before
- Reliability:
- 4 (not assignable)
- Rationale for reliability incl. deficiencies:
- documentation insufficient for assessment
- Study type:
- other: calculation
- Principles of method if other than guideline:
- The estimated parameter (quantum yield 0.01, concentration 5E-05M, depth of water body 500 cm, conversion rate 6.023 x 1020) for the caclulation according to Lyman et al. (1981) were scarcely presented in the SIDS.
- GLP compliance:
- no
- Specific details on test material used for the study:
- Details on properties of test surrogate or analogue material (migrated information):
- quantum yield 0.01
- concentration 5 x 10-5M - Light source:
- sunlight
- Details on test conditions:
- - depth of water body: 500 cm
- conversion rate: 6.023 x 1020 - Quantum yield (for direct photolysis):
- 0.01
- DT50:
- 90.7 yr
- Details on results:
- - degradation rate: 1.21 E-14 mol/L/s
- Validity criteria fulfilled:
- not applicable
- Executive summary:
The photodegradation in water was calculated according to Lyman et al. (1981) to be 90.7 years. The degradation rate was 1.21 E-14 mol/L/s.
Not enough data is available for the assessment of the reliability.
Reference: SIDS / Lyman (1995)
Reference
Description of key information
The photodegradation in water was calculated for 2,4 - dichlorotoluene according to Lyman et al. (1981) to be 90.7 years. The degradation rate was 1.21 E-14 mol/L/s. This may only be seen as additional information, as the reliability cannot be assigned. Reference: SIDS / Lyman (1995)
Key value for chemical safety assessment
- Half-life in water:
- 90.7 yr
Additional information
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