Pyrex · Roasting Pans
Pyrex Irresistible Glass Rectangular Roaster
Lower-concern choice, glass roaster has no PFAS-associated coatings.
Pyrex's borosilicate glass roasters are uncoated glass cookware with no nonstick or waterproof treatments, eliminating the primary vectors for PFAS in cookware. Glass does not require Teflon-family coating coatings and carries no known PFAS risk. No lab data exists for this product, but the material itself poses minimal concern.
Shop Pyrex on Amazon →Material
borosilicate glass
Brand disclosure
Brand is silent on PFAS
Lab data
No public lab test
Why this grade
Category baseline
cookware is a category where PFAS exposure is more common.
Uncoated safe material
Bare, uncoated material (cast iron, stainless, carbon steel, or glass) with no surface treatment to contain PFAS.
The full breakdown
What it's made of and why it matters
Pyrex Irresistible roasters are borosilicate glass, a type of glass formulated with boron oxide to withstand thermal shock and temperature swings. Borosilicate glass has no organic coatings, no Teflon-type coating (Teflon), and does not leach harmful chemicals into food when heated. The material is chemically inert and has a 70+ year safety track record in food contact applications.
The brand's record and disclosure
Pyrex is owned by Instant Brands and has maintained a transparent manufacturing footprint in the US and overseas. The brand does not use PFAS-containing non-stick coatings and does not market itself as PFAS-free because bare glass requires no such claims. Pyrex has faced recalls for structural defects in older soda-lime glass products (pre-2000), but modern Irresistible line uses borosilicate, which is more durable. No safety controversies specific to this product line are on public record.
How it compares in its category
Glass roasters are among the lowest-chemical options for oven cooking compared to ceramic-coated steel, enameled cast iron, or non-stick metal roasters. They avoid Teflon-type coating fume risk, aluminum leaching, and lead in glazes. The trade-off is weight and breakage risk; glass is heavier than metal and cannot tolerate sudden temperature changes as well as modern enameled cookware.
If you buy it
Hand wash rather than dishwasher to extend coating durability and avoid thermal shock. Avoid placing directly from freezer to hot oven or vice versa. Maximum safe oven temperature is typically 500F (check product label). Inspect regularly for chips or cracks, which can create sharp edges and weaken structural integrity. Replace if cracks develop.
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.”
Lead or cadmium in glass base
Modern borosilicate glass formulations used by Pyrex do not contain lead or cadmium. Older soda-lime glassware (1980s-90s) occasionally tested positive for trace lead, but Irresistible line uses borosilicate and no recalls for lead in this product exist.
Coating degradation and peeling
Pyrex Irresistible roasters have a glass exterior only; there is no degradable ceramic or enamel coating to peel. The only surface concern is the printed label or markings, which may fade but do not enter food.
Thermal shock and breakage
Borosilicate glass is more thermal-shock resistant than soda-lime, but rapid temperature swings (e.g., hot oven to cold counter) can still cause cracking or shattering. User error, not manufacturing defect, is the typical cause. Inspect for pre-existing damage before first use.
Aluminum leaching from interior
Glass roasters do not come into contact with aluminum during cooking. Leaching risk does not apply to this material.
Chemical leaching from glass
Borosilicate glass is chemically stable across all food pH ranges and common cooking temperatures. No leaching of boron, silica, or other glass components into acidic or alkaline foods has been established in peer-reviewed literature.
What we don’t know
This grade is a model-based estimate from public materials, coatings, and brand disclosure at 92% 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 Roasting Pans
Caraway
Ceramic Rectangle Pan
ceramic nonstick coating
Lower-concern nonstick option with PFAS-free claim and third-party certification; buy with reasonable confidence.
⚠Risky category by default
Caraway
16x13" Roasting Pan With Rack - Non-Stick Ceramic Coated Sage
Ceramic non-stick coating (Teflon-type coating-free, ceramic-based)
Lower PFAS concern, ceramic coating with verified PFAS-free claim and third-party certification.
⚠Risky category by default
Caraway
Home Small Rectangle Pan
Ceramic non-stick coating (Teflon-type coating and PFOA-free)
Lower-concern cookware choice; ceramic coating avoids traditional Teflon-family coating PFAS.
⚠Risky category by default
More roasting pans 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.