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Assessing and Managing Chemicals under TSCA

Risk Management for Hexabromocyclododecane (HBCD)

What is HBCD?

HBCD is a category of brominated flame retardants consisting of 16 possible isomers. It is also known as the “Cyclic Aliphatic Bromide Cluster (HBCD)."

Why is EPA concerned about these chemicals?

HBCD is used in expanded polystyrene foam (EPS) in the building and construction industry, as well as in consumer products. People may be exposed to HBCD from products and dust in the home and workplace, as well as its presence in the environment.

HBCD is found world-wide in the environment and wildlife. It is also found in human breast milk, adipose tissue, and blood. It bioaccumulates in living organisms and biomagnifies in the food chain. It is persistent in the environment and is transported long distances.

HBCD is highly toxic to aquatic organisms. It also presents human health concerns based on animal test results indicating potential reproductive, developmental and neurological effects.

What is EPA doing to address risks from HBCD?