Registration Dossier
Registration Dossier
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EC number: 207-995-2 | CAS number: 504-60-9
Endpoint summary
Administrative data
Description of key information
Additional information
Penta-1,3-dieneis a volatile substance which is difficult to test for biodegradation in the experimental systems. The estimated QSARs data on environmental degradation ofpenta-1,3-dieneare summarized in table below. Overall, the QSAR estimated data suggest that this substance will degrade fast in the environment.
Table Degradation rates ofpenta-1,3-diene
Degradation rate in water: |
Abiotic transformation: Hydrolysis is not a relevant degradation route for the substance.
Biotic transformation: DT50=8.67 days (208 hours)
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Degradation rate in sediment: |
DT50=78 days (1873 hours)
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Degradation rate in soil: |
DT50=17.33 days (416 hours)
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Degradation rate in air: |
DT50=1.71 hours DT50 (for reaction with hydroxyl radicals)=0.102 days; DT50 (for reaction with ozone)=0.218 days
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Based on the data summarized in this section of CSR,penta-1,3-dieneis considered to degrade rapidly via abiotic or biotic degradation paths.
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