Is Parchment Paper Safe in the Oven? PFAS and Heat Limits

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Parchment paper is safe in the oven up to the temperature printed on the box: 425°F for Reynolds Kitchens and 428°F for If You Care. Keep it out from under the broiler and away from the oven walls, as Reynolds instructs. The chemical worry that follows parchment around, PFAS, belongs to the grease-proofing treatments FDA says manufacturers stopped selling for U.S. food-contact paper in 2024. If You Care names its non-stick layer as silicone, a coating federal rules allow on paper that touches food.

That makes the roll already in your drawer fine to finish. When it runs out, buy an unbleached roll that names its coating and carries a home-compost certification. A sheet that comes out clean can line the next tray too, and Reynolds lists reuse among its parchment’s features. A silicone mat replaces the roll only for frequent bakers: at current prices one costs as much as about 260 single-use sheets.

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A sheet of white parchment paper lining a baking dish of brownie batter on an oven rack, its creased edges standing above the rim
The overhang can stay; Reynolds’ rule is that parchment shouldn’t touch the oven walls or a flame. Photo by Arwen on Unsplash

What Coats a Sheet of Parchment

Bare paper would soak up butter and grip a cookie, so parchment gets a release layer, and three kinds turn up in the federal rules and the trade. Silicone is the one to look for on a retail roll. FDA lists silicone coatings among the substances allowed on paper that touches wet and fatty food, and If You Care describes its parchment as carrying “a fine misting” of food-safe silicone. Reynolds calls its own layer a non-stick coating produced through a “parchmentizing process” and doesn’t name the chemistry on its product pages.

Quilon is the second. Zaclon, which makes it, describes Quilon as long-chain fatty acids bound to a chromium(III) molecule and says its primary use is food papers that need release, such as bakery pan liners. FDA lists the same stearato-chromic chloride complex as a prior-sanctioned substance for paper used in food packaging. If You Care’s Amazon listing claims most other brands use Quilon because it costs less than silicone, without a figure to back it up. A roll that names silicone has answered the question; one that says only “non-stick” leaves it open.

Fluorinated grease-proofers were the third, and they are where the PFAS question comes from.

Does Parchment Paper Have PFAS?

Not by design, as of 2024. PFAS grease-proofers were applied to paper food packaging to stop oil soaking through, and FDA found their short PFAS side chains could break off and migrate into food. In February 2024 the agency announced that manufacturers were no longer selling them for U.S. food-contact paper, and in January 2025 it declared the 35 notifications that had authorized them no longer effective (FDA).

That isn’t a promise of a fluorine-free sheet. FDA notes that PFAS can still reach packaging as an impurity or through contaminated process water, and that total-fluorine tests can’t tell PFAS apart from other fluorine compounds. Brand-by-brand comparisons online rely on those tests. Mamavation, a consumer blog that pays for its lab work through donations and affiliate commissions, sent rolls bought in 2021, plus three bought in 2024, to a lab for total fluorine. Reynolds measured 14 parts per million, Kirkland and Biocean 12, and If You Care’s roll and sheets, Katbite, GIFBERA and Baar’s uncoated parchment came in under the 9 to 10 ppm detection limit. The results aren’t peer reviewed, and the 2021 rolls predate FDA’s phase-out.

A compost certification is the easier screen. Since 2020 the Biodegradable Products Institute (BPI) has required certified items to have no intentionally added fluorinated chemicals and no more than 100 ppm of organic fluorine, and TÜV Austria’s OK compost marks carry fluorine limits of their own. If You Care’s parchment carries the TÜV marks.

How Hot Can Parchment Go?

Each maker sets its own ceiling, and the paper ones sit between 400°F and 465°F:

  • If You Care parchment: 428°F.
  • Reynolds Kitchens parchment, white or unbleached: 425°F, never under a broiler, in a toaster oven, or touching a flame or the oven walls; Reynolds recommends preheating the oven first.
  • Reynolds air fryer liners: 400°F, on the fryer setting only.
  • Cosori air fryer liners: 465°F.
Table of heat limits makers state: parchment rolls 428°F (If You Care) and 425°F, never under a broiler or in a toaster oven (Reynolds); air fryer liners 400°F on the fryer setting (Reynolds) and 465°F (Cosori), never during preheating; wax paper not for direct oven heat; Silpat silicone mat -40°F to 500°F
Heat limits as stated by Reynolds, If You Care and Cosori on their own sites and by Silpat’s Amazon listing, October 2026. Graphic by The Zero Waste List.

Bread recipes that bake at 450°F or hotter run past both roll ratings, so a loaf in a preheated pot needs a sheet rated for that heat or a silicone mat, which Silpat’s Amazon listing rates to 500°F. Reynolds’ toaster-oven exclusion extends to its air fryer liners, which it doesn’t recommend for rectangular, toaster-oven-style air fryers.

Bleached vs. Unbleached Parchment

The brown roll skips a step at the pulp mill, and that is where the difference shows. Chlorine bleaching once left traces of dioxins in white paper. FDA’s 1990 assessment of bleached food-contact paper, which drew on migration data from coffee filters and milk cartons, put the upper-bound lifetime cancer risk at 2.5 in a million at 1988 to 1990 levels, a risk FDA and EPA both called low. The paper industry then cut residual dioxin (TCDD) to 2 parts per trillion or less, and by early 1993 only 3 of 249 industry tests came in above that (FDA notice, 1994). EPA’s 1998 Cluster Rule went on to cap dioxin and other chlorinated pollutants in the wastewater of bleached-pulp mills.

The stronger case for unbleached parchment now rests on the mill’s discharge rather than the sheet on your tray. If You Care makes its parchment from unbleached, totally chlorine-free (TCF) paper, and Reynolds’ unbleached roll is 75% unbleached fiber and also TCF. Color doesn’t change how well food releases; the coating does that. The same chlorine-free terms appear on diaper packs, and our explainer on TCF and ECF bleaching sets out what each one rules out.

When Your Roll Runs Out

If You Care’s Parchment Baking Paper is unbleached TCF paper from FSC-certified sources, with a coating the maker names as silicone, a 428°F rating, and TÜV Austria’s OK compost HOME and INDUSTRIAL certifications. Its 70-square-foot roll was $5.59 on Amazon, sold by Amazon itself, and $7.69 at If You Care’s own store (Oct 2026); If You Care puts other brands’ rolls at 30 to 45 square feet.

Buy the If You Care Parchment Roll at Amazon

Two limits to know. If You Care’s own site doesn’t use the word PFAS, so the case rests on the named silicone coating and the non-detect result in Mamavation’s test. And its certification sheet lists the parchment under TÜV Austria’s compost marks and Europe’s Seedling mark, not BPI’s; the BPI mark appears on its coffee filters, twine and a few other products instead.

Parchment vs. Wax Paper

Wax paper is thin paper coated with wax, which Alameda County’s StopWaste agency lists as paraffin, soybean or vegetable oil, or beeswax. Reynolds says its Cut-Rite wax paper shouldn’t be directly exposed to oven heat; it can line a cake or bread pan only where the batter covers it completely. Both papers go in the microwave, and Reynolds sells wax paper for rolling dough and covering dishes there.

Wax paper does better at the end of its life. StopWaste’s guidance for Alameda County puts wax paper in the compost and parchment in the garbage, because the county’s composters count parchment’s silicone as plastic they want kept out of finished compost. For jobs that never see the oven, wax paper does the work, and in Alameda County at least, it can go in the compost afterward.

Parchment in an Air Fryer

It works with two rules from the makers: never put a liner in during preheating, and always have enough food on it to hold it down. Cosori warns that a liner without enough weight can lift into the upper heating element and risk a fire, and Reynolds says to preheat first and then add the liner and food together. Reynolds’ perforated liners are rated to 400°F and single-use; Cosori’s are rated to 465°F.

Cosori sells its liners as protection for the basket against residue and scratches, which matters most on a nonstick basket that is already worn. A basket without a coating has nothing to protect, one reason our guide to non-toxic air fryers leads with glass and steel models. In the air fryer you already own, a sheet cut from your roll does the same job if it sits under the food and leaves room around the edges for air, the reason Reynolds punches holes in its liners.

Reusing Parchment, or Switching to a Silicone Mat

A sheet that comes out intact and free of burnt-on grease can line the next tray. Reynolds lists reuse among the features of its parchment rolls; its air fryer liners are the exception, sold as single-use. A second bake on the same sheet halves what the roll costs you per tray.

A mat is the bigger swap. Silpat’s half-sheet mat, silicone over fiberglass mesh and rated from −40°F to 500°F on its Amazon listing, lists at $27.99 there (Oct 2026). A 12-by-16-inch sheet cut from If You Care’s roll costs about 11 cents at the Amazon price, so the mat equals roughly 260 single-use sheets, about five rolls. Baking once a week and reusing sheets, that is several years of parchment; baking daily on a fresh sheet each time, the mat covers its price in under a year.

Silicone has an open question of its own. Germany’s Federal Institute for Risk Assessment (BfR) has measured small cyclic siloxanes migrating from silicone baking molds into fatty foods, and its guidance caps silicone’s volatile content at 0.5%. In its tests, molds that released under 0.1% volatile material showed no migration above 50 micrograms per kilogram by the third use, and the agency says a full risk assessment still needs data from real foods (BfR, 2022). Whether silicone is eco-friendly comes down to how long the mat stays in use.

A mat already in the drawer stays the lower-waste choice; keep using it. The pan underneath matters more than either liner: bare stainless steel, where food grabs more than it does on a coated pan, is where a liner earns its place, and our non-toxic bakeware guide compares pans by what is on the surface.

Can You Compost Parchment Paper?

Some rolls, where your compost will take them. If You Care’s certification sheet lists its parchment under TÜV Austria’s OK compost HOME and OK compost INDUSTRIAL marks and the Seedling mark, and Reynolds says its unbleached roll is home compostable only. Under the FTC’s Green Guides, a plain “compostable” claim holds only for something that breaks down safely in a home pile; anything else needs a qualifier.

Home compostable doesn’t mean every used sheet belongs in the pile. EPA advises keeping fats, oils and grease out of backyard compost, because they draw animals and home piles may not get hot enough to break them down. A sheet from a tray of cookies can go in; one soaked in bacon fat belongs in the trash, or in a city compost bin that takes food-soiled paper.

City programs differ. Alameda County, California, routes parchment to the garbage, neither recycling nor compost, while wax paper goes in the compost bin. Check your own program’s list before counting on a certified sheet being welcome.

Other Parchment Questions

Is parchment paper safe at 450 degrees?

Not by the ratings on standard rolls: Reynolds rates its parchment to 425°F and If You Care to 428°F. Ratings vary by product, and Cosori rates its air fryer liners to 465°F. For bread or roasting at 450°F, use a sheet rated for that heat or a silicone mat; Silpat’s Amazon listing rates its mat to 500°F.

Is Reynolds parchment paper safe?

Within its limits, by Reynolds’ own instructions: 425°F for both its white and unbleached rolls, and never under a broiler, in a toaster oven, or touching a flame or the oven walls. Its product pages describe the non-stick layer without naming the chemistry. In Mamavation’s total-fluorine test of a roll bought in 2021, Reynolds measured 14 ppm, a method FDA says can’t separate PFAS from other fluorine compounds, and the roll predates FDA’s 2024 phase-out. The unbleached roll is totally chlorine-free and sold as home compostable.

Is unbleached parchment paper non-stick?

Yes. The release comes from the coating: If You Care’s unbleached parchment is coated with silicone, and Reynolds sells its unbleached roll as non-stick. Unbleached only means the pulp skipped the whitening step.

Sources

Silpat’s mat specifications come from its Amazon listing (Silpat Premium Non-Stick Silicone Baking Mat, Half Sheet, ASIN B00008T960), read in October 2026.

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