Registration Dossier
Registration Dossier
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EC number: 203-450-8 | CAS number: 106-99-0
Ecotoxicological Summary
Administrative data
Hazard for aquatic organisms
Freshwater
- Hazard assessment conclusion:
- no hazard identified
Marine water
- Hazard assessment conclusion:
- no hazard identified
STP
- Hazard assessment conclusion:
- no hazard identified
Sediment (freshwater)
- Hazard assessment conclusion:
- no hazard identified
Sediment (marine water)
- Hazard assessment conclusion:
- no hazard identified
Hazard for air
Air
- Hazard assessment conclusion:
- no hazard identified
Hazard for terrestrial organisms
Soil
- Hazard assessment conclusion:
- no hazard identified
Hazard for predators
Secondary poisoning
- Hazard assessment conclusion:
- no potential for bioaccumulation
Additional information
Substance is a gas and is extremely unlikely to reside in the aquatic or terrestrial compartment. Deriving an aquatic or soil PNEC for a gas is unreasonable and technically of little use for risk assessment as the substance will not be present in the aquatic or terrestrial environment.
Conclusion on classification
The lowest calculated acute results were a 72 hour EC50 value for green algae of 33 mg/L and a 48 hour EC50 value for Daphnia of 33 mg/L. A measured log Kow of 1.99 for 1,3-butadiene indicates the potential for bioaccumulation to be low. Measured data are not available to demonstrate that 1,3-butadiene is readily biodegradable, but 1,3-butadiene is expected to partition to the air from water at a rapid rate, reducing the potential for exposure. Taken together with the acute toxicity data, these results do not support any classification for acute or chronic hazard to the environment under the DSD or CLP Regulations.
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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