Silicone King Review, Is Silicone King Non-Toxic?
PFAS Authority is a scoring system, not a laboratory. We do not test products ourselves. Grades are model-based, built from published ingredients, materials, certifications, brand disclosures and third-party lab results where they exist. See the rubric.
Across 7 graded products, Silicone King averages Good (58/100). On disclosure, the brand says nothing publicly about PFAS. None of its products grade Good or better yet. Grades are model-based estimates, not lab results.
Graded and flagged Poor and Bad, we’d swap these
Silicone King
King Arthur Baking Company Silicone Muffin Cups
Silicone (no Teflon-family coating or Teflon-type coating)
Microabrasion and particulate shedding
Aggressive scrubbing or contact with sharp utensils may cause microscopic silicone…
Mold and bacterial growth in crevices
Silicone cups can harbor bacteria in seams and micro-tears if not dried thoroughly or if…
Lower PFAS concern; pure silicone cups present minimal risk, though brand lacks transparency.
⚠Risky category by default
Silicone King
Trudeau Jumbo Silicone Muffin Pan
silicone (elastomer)
Thermal degradation and fume release
Silicone is heat-stable to 500°F, but exceeding manufacturer limits or prolonged exposure…
Bacterial or mold colonization
Silicone's porous surface can trap moisture and bacteria if not dried thoroughly after…
Color fading and surface degradation over time
Silicone muffin pans commonly develop staining and slight surface tackiness with…
Lower concern; silicone muffin pans are not an inherent PFAS vector, but verify specifics if needed.
⚠Risky category by default
Silicone King
Boxiki Kitchen Silicone Muffin Pan
Food-grade silicone (primary)
Silicone oligomer leaching
Food-grade silicone can release small amounts of uncrosslinked oligomers into fatty or…
Coating or material degradation over time
Silicone rubber progressively hardens and becomes brittle with age, UV exposure, and…
Microplastic shedding
Silicone is a synthetic polymer; mechanical wear or degradation could theoretically…
Lower PFAS concern; silicone cookware is inherently non-Teflon-type coating and generally PFAS-low.
⚠Risky category by default
Silicone King
Silikomart Muffin Baking Mold
Silicone (uncoated)
Silicone degradation and microcracking
Prolonged exposure to high heat (above 260°C), abrasive cleaning, or contact with certain…
Oligomer leaching from low-quality silicone
Unverified silicone sources may contain trace cyclic oligomers (siloxanes) that could…
Mold and bacterial growth if not dried
Silicone's texture can trap moisture in crevices; if stored damp or not dried thoroughly…
Lower concern; silicone-only bakeware typically avoids PFAS, but brand offers no transparency.
⚠Risky category by default
Silicone King
Trudeau Silicone Muffin or Cupcake Pan
Silicone (no nonstick coating)
Silicone degradation and microplastic shedding
Food-grade silicone can degrade over many years with repeated heating, flexing, and…
Leaching of additives (uncrosslinked oligomers)
Some silicone products contain uncrosslinked oligomers that can migrate into food at high…
Heavy metals
If the pan is brightly colored or patterned, pigments or dyes may contain trace metals…
Lower concern; silicone muffin pan has no PFAS-prone coatings.
⚠Risky category by default
Silicone King
Silicon Muffin Pan
silicone elastomer
Silicone leaching (oligomers and uncrosslinked polymers)
Food-grade silicone can shed small oligomeric molecules (short-chain fragments) into…
Odor and stain absorption
Silicone elastomers are porous and absorb odors and color from foods and spices. This is…
Thermal degradation at misuse temperatures
If exposed to sustained temperatures above 500 degrees Fahrenheit (e.g., broiler or…
Lower concern; silicone muffin pans are inherently PFAS-light, but brand transparency is absent.
⚠Risky category by default
Silicone King
Silicone 12-Cup Muffin Pan with Metal Frame & Handles, Nonstick BPA-Free (Confetti)
Silicone (primary); metal frame/handles
Silicone degradation and particle shedding
Food-grade silicone is chemically inert at typical baking temperatures, but repeated…
Heat transfer via metal handles
Metal handles conduct heat directly from a hot oven. If handles are not insulated or are…
Lower PFAS concern, but unspecified nonstick coating type on frame requires brand clarification.
⚠Nonstick, coating undisclosed
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