OXO · Food Storage Containers
OXO POP Container 5-Piece
Lower-concern food storage; PP and silicone are not typical PFAS-containing materials, though OXO does not explicitly disclose PFAS status.
OXO POP containers are made from polypropylene plastic with silicone seals, neither of which is a typical vector for intentional PFAS use. The brand makes no PFAS claims or disclosures. No independent testing or recalls exist for this product category.
Shop OXO on Amazon →Material
Polypropylene (PP) plastic container with silicone gasket seal
Brand disclosure
Brand is silent on PFAS
Lab data
No public lab test
Why this grade
Category baseline
food packaging is a category where PFAS exposure is more common.
No PFAS disclosure
No public statement about PFAS in this product.
Safe base material
Made from a material with no inherent PFAS use (ceramic, mineral, or natural fiber).
The full breakdown
What it's made of and why it matters
OXO POP containers are polypropylene (PP, plastic #5) with silicone gasket seals. PP is a semi-rigid thermoplastic chosen for food contact because it has a higher melting point (160-170°C) than softer plastics like PET or PVC, reducing leaching risk during normal use and dishwasher cycles. Silicone gaskets are chemically inert and do not off-gas harmful compounds under typical kitchen temperatures. Neither material is known to leach BPA, phthalates, or other endocrine disruptors under normal food storage conditions.
The brand's record and disclosure
OXO has not faced documented recalls or safety advisories specific to the POP container line as of public record. The brand does not publish explicit PFAS-free certifications or detailed material safety disclosures on this product, which is common among mainstream kitchenware brands but reflects a transparency gap rather than a safety failure. OXO containers meet FDA food contact regulations and are BPA-free (stated on packaging). No evidence of heavy metals or carcinogenic dyes in the plastic matrix is publicly available.
How it compares in its category
PP-based rigid containers are considered mid-to-lower risk in the food storage category. They sit between glass (safest, inert, no leaching) and soft plastics like PET or flexible silicone (higher leaching potential with heat). OXO POP containers are comparable to other mainstream PP airtight systems (Rubbermaid, Ziploc, Snapware) in material chemistry and safety profile. The silicone seal is a premium feature over plastic-to-plastic closures, as it does not require chemical plasticizers to remain flexible.
If you buy it
Avoid prolonged contact with very hot foods (above 60-70°C); transfer hot items to containers after they cool slightly. Do not microwave filled containers for extended periods, as sustained heat above 70°C can slowly increase PP leaching rates, though risk remains low. Hand-wash gaskets occasionally to prevent mold and odor buildup in seals. Replace containers after 5-7 years of frequent use or if the plastic becomes cloudy, warped, or cracked, as degradation increases permeability to air and moisture and may slightly elevate leaching risk.
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.”
Microplastics migration from PP matrix
Polypropylene does not naturally shed microplastics during normal storage or dishwashing. Risk is theoretically present only if the plastic is mechanically damaged, scratched, or exposed to solvents (acetone, alcohol). No established public health concern for intact PP food containers.
BPA and bisphenols from plastic
Polypropylene (#5) is not formulated with BPA or BPS as a standard component. OXO explicitly markets POP containers as BPA-free. This hazard class does not apply to PP-based storage.
Phthalate plasticizers
PP does not require phthalates for flexibility; it is a rigid material. Silicone gaskets are also phthalate-free. No evidence of phthalate use in OXO POP formulation.
Leaching from degraded coatings or seals
Silicone gaskets can accumulate bacteria or mold if not cleaned regularly, but do not chemically degrade in ways that release toxic compounds. Prolonged UV exposure (storage in direct sunlight) may cause the PP container to become brittle and less chemically stable over years, slightly increasing potential for microscopic leaching. Replace if container shows visible wear.
Heat-induced polymer breakdown
PP's melting point is 160-170°C, but chemical leaching increases measurably above 70-80°C. Microwave reheating or storage of very hot food regularly may accelerate this, though absolute leaching levels remain below regulatory concern thresholds for short-term use. Avoid habitual high-heat exposure.
What we don’t know
This grade is a model-based estimate from public materials, coatings, and brand disclosure at 72% 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 Food Storage Containers
Caraway
Food Storage Set
Glass containers with plastic lids
Lower concern; glass + plastic lids with stated PFAS-free position, but no third-party verification of lid material.
⚠Risky category by default
Caraway
Home 9-Piece Mini Food Storage Set
Borosilicate glass containers with plastic lids
Lower-concern option; glass containers avoid PFAS coatings, but verify lid material before purchase.
⚠Risky category by default
Caraway
Cream 6.6-Cup Non-Stick Glass Food Storage Container with Lid
borosilicate glass with non-PFAS lid
Lower PFAS concern, glass container with stated non-PFAS lid, though third-party verification absent.
⚠Risky category by default
More food storage 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.