Registration Dossier

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 hr EC50 value for green algae of 33mg/L and a 48 hr EC50 value for Daphnia of 33mg/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.