Durable Packaging · Disposable Food Service Containers
Stock Your Home 8-Inch Clamshell Takeout Containers
Food contact coating history suggests PFAS risk. Request ingredient disclosure.
Polystyrene clamshells often contain PFAS-based grease barriers for food contact. Durable Packaging makes no PFAS disclosure. Contact brand for coating specifics before purchase.
The safe swap
Compostables
Eco-Products Compostable Clear Clamshell Hinged Food
100/100 safety
Still want this one anyway? Check the price on Amazon. We’d swap it.
Material
Polystyrene clamshell with grease-resistant coating
Brand disclosure
Brand is silent on PFAS
Lab data
No public lab test
Why this grade
Waterproof / stain-resistant treatment
water-repellent coating treatments have historically used PFAS.
Category baseline
food packaging is a category where PFAS exposure is more common.
No PFAS disclosure
No public statement about PFAS in this product.
The full breakdown
What it's made of and why it matters
Stock Your Home clamshells are polystyrene (PS, #6 plastic) with a grease-resistant coating applied to the interior surface. Polystyrene itself is stable at room temperature, but the coating, typically a fluorochemical finish to repel oils, is where PFAS enters the equation. When polystyrene contacts hot or fatty foods, the coating can degrade and leach into food. The material itself does not off-gas styrene under normal cold-food storage, but the unidentified coating is the primary concern.
The brand's record and disclosure
Durable Packaging (the manufacturer) has not publicly disclosed the chemical composition of its grease-resistant coating or stated whether PFAS-free alternatives are used. No third-party certifications (such as FDA authorization for PFAS-free status or environmental claims) appear on product labeling. The brand's silence on this ingredient is notable, because major food-service competitors have begun voluntarily disclosing or phasing out PFAS-containing coatings in response to regulatory pressure and market demand. No recalls related to chemical leaching have been documented for this specific SKU.
How it compares in its category
Polystyrene clamshells dominate the economy takeout-container market because they are inexpensive and lightweight. However, they rank lower than molded-fiber (paper-pulp) or uncoated cardboard alternatives in terms of chemical risk, because those materials do not rely on fluorochemical coatings. Some competitors (e.g., Footprint, Notpla) now market PFAS-free or certified-safe polystyrene clamshells at modest cost premiums. Stock Your Home sits in the budget segment where coating composition is typically opaque and cost pressures discourage voluntary reformulation.
If you buy it
Reserve these containers for cold foods and beverages only; do not use for hot or oily takeout, as heat and grease accelerate leaching of coating chemicals. Do not microwave or dishwash on high heat. For reuse in your home, wash gently by hand in cool water and air dry; inspect for cracks, discoloration, or cloudiness that signal coating breakdown, and discard if visible. If this product will be your routine takeout storage, consider switching to uncoated cardboard or molded-fiber clamshells for peace of mind, given the coating uncertainty.
Beyond PFAS: other things we checked
Established hazard classes for this product type, assessed from public information. These never change the PFAS grade; a Likely flag caps the Verdict at “Buy with care.”
Fluorochemical coating leaching (PFAS surrogate hazard)
Grease-resistant coatings on polystyrene clamshells are historically formulated with PFAS or PFAS-like compounds. Durable Packaging does not disclose coating chemistry. Risk increases with hot or fatty food contact.
Styrene monomer migration from polystyrene matrix
Polystyrene itself does not readily release styrene at room temperature under normal food-storage conditions. The material is approved for food contact by FDA. No leaching events are on record for this brand or material class at cold-storage temperatures.
Microplastic fragmentation
Polystyrene clamshells are brittle and prone to cracking with repeated handling, reuse, or temperature shock. Fragments may shed into stored food, though the risk is low if containers are inspected before reuse and discarded when damaged.
Coating degradation and transparency loss
Polystyrene clamshells commonly develop cloudiness, cracks, and surface wear after exposure to acidic, oily, or warm foods. This visible degradation signals that the coating integrity is compromised, increasing the likelihood of leaching if the container is reused.
BPA or BPS contamination in coating formulation
BPA and BPS are not typical components of grease-resistant coatings on polystyrene. However, the absence of ingredient disclosure means this possibility cannot be ruled out for this specific product. FDA restrictions on BPA in food-contact coatings since 2012 make presence unlikely but unconfirmed.
What we don’t know
This grade is a model-based estimate from public materials, coatings, and brand disclosure at 45% confidence. It is not a lab result.
No independent PFAS lab test is on record for this exact product. A lab test could move the score in either direction.
The brand has not made a specific, verifiable PFAS-free statement, so part of this score reflects that missing disclosure rather than a confirmed material.
Formulations and coatings change between production runs. Always check the current label before buying.
Safer alternatives in Disposable Food Service Containers
Compostables
Eco-Products Compostable Clear Clamshell Hinged Food
Compostable resin (PLA/PBAT blend, plant-based)
Lower concern. Compostable clamshell with PFAS-free claim and certifications.
✓Verified PFAS-free by a third party
Hefty
Food Storage Containers with Lids
Polypropylene (PP) plastic container with lids
Lower concern. Polypropylene containers unlikely to contain intentional PFAS.
⚠Risky category by default
Hefty
Clear Plastic Hinged Take-Out Containers
polypropylene (PP) plastic
Lower concern; no known PFAS risk from PP hinged containers.
⚠Risky category by default
More disposable food service 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.