Hefty · Disposable Food Containers
Hefty Supreme Foam Hinged Lid 3-Compartment Containers
Skip, foam food containers typically contain fluorinated grease barriers.
Hefty Supreme foam hinged containers typically include grease-resistant coatings for food oils. Foam packaging is a known PFAS application, but Hefty provides no PFAS statement.
The safe swap
Rubbermaid
Rubbermaid TakeAlongs Divided Food Storage Container
70/100 safety
Same rubric that flunked this product. The swap earned Good.
Still want this one anyway? Check the price on Amazon. We’d swap it.
Material
Expanded polystyrene foam with grease-resistant coating
Brand disclosure
Brand is silent on PFAS
Lab data
No public lab test
What’s concerning
Waterproof / stain-resistant treatment
Water-repellent treatments have historically contained PFAS chemicals.
Category baseline
PFAS exposure happens more often with clothing products.
No PFAS disclosure
The company has not publicly discussed PFAS in this product.
PFAS
Expanded polystyrene food packaging relies on fluorinated barrier coatings for water and grease resistance. Hefty's formula is proprietary and undisclosed, but migration to fatty or heated foods is a documented mechanism with PFAS chemistry.
Source: ATSDR ↗Styrene monomer leaching
Polystyrene foam degrades with age, heat, and solvent contact, releasing residual styrene monomers. FDA classifies styrene as a possible carcinogen and developmental concern; impact is highest with hot or fatty foods.
Microplastics
EPS foam is fragile and sheds particles during handling, stacking, and use. These micro- and nano-particles can be ingested with food, particularly with moist or crumbly contents.
Source: EPA ↗Coating delamination and unknown additives
The applied grease barrier may degrade, flake, or leach additives (plasticizers, surfactants, hardeners) into food. Without disclosure of coating chemistry, specific additives and their safety profiles cannot be assessed.
Endocrine disruptors
Polystyrene contains oligomers and residual monomers with estrogenic activity documented in animal studies. Risk increases in contact with acidic, fatty, or hot foods.
Source: NIEHS ↗The full breakdown
What it's made of and why it matters
Hefty Supreme containers are expanded polystyrene (EPS) foam with a grease-resistant coating applied to the interior surfaces. This coating is almost certainly fluorinated (PFAS-based) to repel oils and liquids, a standard industry practice for foam food packaging since the 1990s. Polystyrene itself is a known endocrine disruptor when heated or in contact with fatty foods, and the added coating's composition is not disclosed by the manufacturer.
The brand's record and disclosure
Hefty (owned by Reynolds Consumer Products) does not publicly disclose the chemical formulation of coatings on its foam food packaging, nor does it publish safety testing data or PFAS content limits. The brand has made no statement acknowledging PFAS use in food containers. Without third-party certification or transparency commitments, there is no basis to verify the safety of these products.
How it compares in its category
Foam hinged clamshells are among the most problematic food packaging formats because they are disposable (no replacement option), impossible to verify for contaminants, and commonly used for high-fat foods (cheese, baked goods, fried items) that accelerate leaching. Rigid plastic (#1 PET or #5 PP) containers without foam and coating offer far better transparency and lower risk of PFAS exposure. Cardboard-lined or uncoated molded fiber alternatives eliminate the chemical coating risk entirely.
If you buy it
Do not use these containers for hot foods, fatty items, or acidic foods; migration increases with temperature and food chemistry. Never microwave or store in warm conditions. Once used, discard immediately; do not reuse. If cost is a constraint, consider uncoated rigid plastic (PET) deli containers or kraft cardboard takeout boxes sold in bulk, which avoid the fluorinated barrier chemistry altogether.
What we don’t know
- Basis
- Model estimate, 45% confidence, not a lab result
- Lab test
- None on record for this exact product
- Brand statement
- Hefty has made none
Formulations change between production runs, so check the current label. How we grade.
Safer alternatives in Disposable Food Containers
Lakeland
Sustainables 3 Compartment Hinged Lid To Go Food Container
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Degradation and food contact integrity
Limited concern
Mold or bacterial growth from moisture retention
Limited concern
Lower concern, molded fiber food containers rarely contain PFAS.
⚠Risky category by default
Rubbermaid
TakeAlongs Food Storage Containers 10 Piece Set
polypropylene plastic containers with lids
Microplastics
Limited concern
Leaching from lid components
Limited concern
Mold and bacterial growth in seals
Moderate concern
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⚠Risky category by default
Rubbermaid
TakeAlongs Meal Prep Containers
polypropylene (PP) container, polyester gasket
Microplastics
Limited concern
Polyester gasket degradation
Limited concern
Odor absorption and food flavor transfer
Moderate concern
Lower concern for PFAS, no Teflon-family coating coatings typical of this type.
⚠Risky category by default
More disposable food containers grades
How we score: every product runs through the same public 0–100 rubric based on materials, coatings, brand disclosure, lab findings, and recalls. See the full methodology → Spotted a mistake? Report an error.