{"hq_id":"hq-p-hom-000149","name":"Silicone Bakeware (Muffin Pans, Cake Molds, Spatulas)","category":{"primary":"household","secondary":"kitchen","tags":["silicone bakeware","siloxane","D4","D5","baking","food contact","heat"]},"product_tier":"HOM","overall_risk_level":"low","description":"Silicone baking molds, muffin pans, spatulas, and mats made from cross-linked polydimethylsiloxane (PDMS). Platinum-cured food-grade silicone is generally inert, but baking temperatures (175-230C/350-450F) increase cyclic siloxane (D4, D5) migration into food. Lower-quality peroxide-cured silicone has higher residual siloxane content. D4 is classified as a reproductive toxicant in the EU.","synthesis":{"derived_risk_level":"high","synthesis_confidence":0.5,"synthesis_method":"compound_composition","context_used":"human_child","context_source":"product_users","exposure_modifier":0.85,"vulnerability_escalated":true,"escalation_reason":"Child exposure group","compounds_resolved":1,"compounds_total":1,"synthesis_date":"2026-05-09","synthesis_version":"1.2.0","methodology_note":"exposure_modifier and adjusted_magnitude are computed from ALETHEIA-calibrated heuristics (route × duration × frequency multipliers, clamped to [0.5, 1.4]). Multipliers are directionally informed by EPA Exposure Factors Handbook (2011) and CalEPA OEHHA but are not regulatory consensus. See /api/methodology for full disclosure."},"hazard_summary":{"sensitive_populations":"general population (low risk)","overall_risk":"low","primary_concerns":["Cyclic siloxane (D4) migration at baking temperatures — EU reproductive toxicant","Higher migration from peroxide-cured vs platinum-cured silicone","Migration increases with temperature, fat content, and surface area"],"exposure_routes":"Oral ingestion via food baked in silicone"},"exposure":{"routes":["oral"],"contact_types":["oral_direct"],"users":["adult","child"],"duration":"minutes","frequency":"weekly","scenarios":["Baking in silicone molds at 200-230C (migration increases with temperature)","Fatty foods in silicone (fats absorb more siloxanes)","New silicone bakeware: highest siloxane release on first uses"],"notes":"BfR (German Federal Institute for Risk Assessment) found siloxane migration from silicone bakeware at 200C was below health concern thresholds for platinum-cured products. Peroxide-cured silicone showed higher migration. 'Bake-out' (empty baking at 250C for 4 hours) reduces residual siloxanes by 60-80%."},"consumer_guidance":{"usage_warning":"Choose platinum-cured silicone bakeware (higher quality, lower residuals). 'Bake out' new silicone at 250C/480F for 4 hours before first food use. Do not exceed manufacturer temperature limits. Avoid very fatty foods in silicone at high temperatures.","safer_alternatives":["Stainless steel baking pans (zero migration)","Glass baking dishes (Pyrex — completely inert)","Ceramic baking dishes (lead-free certified)"],"red_flags":[{"indicator":"Strong chemical odor from new product","meaning":"Off-gassing of volatile chemicals.","action":"Air out in ventilated area before indoor use."}],"green_flags":[{"indicator":"GREENGUARD or UL certification","meaning":"Tested for low chemical emissions.","verification":"Check for GREENGUARD Gold or UL GREENGUARD certification mark."}],"what_to_ask":[{"question":"What certifications does this product have for indoor air quality?","why_it_matters":"Certification verifies low chemical emissions in occupied spaces.","good_answer":"GREENGUARD Gold, California ARB compliant, or equivalent.","bad_answer":"No emission testing or certifications."}],"alternatives":[{"name":"Stainless steel baking pans","notes":"zero migration"},{"name":"Glass baking dishes","notes":"Pyrex — completely inert"},{"name":"Ceramic baking dishes","notes":"lead-free certified"}]},"regulatory":{"applicable_regulations":[{"jurisdiction":"USA","regulation":"CPSC General Safety","citation":"15 U.S.C. 2051","requirements":"Consumer products must not present unreasonable risk of injury.","compliance_status":null,"effective_date":null,"enforcing_agency":"CPSC","penalties":null,"source_ref":null},{"jurisdiction":"USA -- California","regulation":"California Proposition 65","citation":"CA Health & Safety Code 25249.5","requirements":"Products containing listed chemicals require clear warnings.","compliance_status":null,"effective_date":null,"enforcing_agency":"OEHHA","penalties":null,"source_ref":null}],"certifications":[],"labeling":{"required_disclosures":[],"prop65_warning":{"required":null,"chemicals":[],"endpoint":null,"notes":null},"ghs_labeling":{"required":null,"signal_word":null,"pictograms":[],"hazard_statements":[],"notes":null},"hidden_ingredients":{"trade_secret_protected":null,"categories_hidden":[],"estimated_count":null,"known_concerns":null,"notes":null},"notes":null},"recalls":[],"regulatory_gap":null,"notes":null},"lifecycle":{"recyclable":false,"disposal_guidance":"Silicone not widely recyclable. Regular waste when degraded.","hazardous_waste":false,"expected_lifespan":"3-5_years"},"formulation":{"form":"varies","key_ingredients":[{"hq_id":"hq-c-org-000668","name":"D4 (tetramethylcyclotetrasiloxane)","role":"residual_siloxane","concentration_pct":"trace"}],"certifications":[]},"materials":{"common":[],"concerning":[],"preferred":[]},"compound_composition":[{"hq_id":"hq-c-org-000668","compound_name":null,"role":"residual_siloxane","typical_concentration":"trace"}],"identifiers":{"common_names":["silicone bakeware (muffin pans, cake molds, spatulas)"],"aliases":[],"manufacturer":null,"brands":[]},"brand_examples":[{"brand":"SC Johnson","manufacturer":"SC Johnson","market_position":"mass_market","notable":"Household product conglomerate"},{"brand":"Clorox","manufacturer":"Clorox","market_position":"mass_market","notable":"Household cleaning market leader"},{"brand":"3M","manufacturer":"3M","market_position":"mass_market","notable":"Home safety and maintenance products"}],"brand_examples_disclaimer":"Representative branded products of this category. Concerning ingredients listed in materials.concerning[] apply to the category, not necessarily to every named brand. Specific formulations vary by SKU and may have changed since this record was written; consult the brand's current ingredient label before drawing brand-level conclusions.","sources":[{"type":"expert_curation","name":"ALETHEIA Safety Database","date":"2026-03-25"},{"type":"regulation","title":"CPSC General Safety (15 U.S.C. 2051)","jurisdiction":"USA","citation":"15 U.S.C. 2051","id":"src_f01143be"},{"type":"regulation","title":"California Proposition 65 (CA Health & Safety Code 25249.5)","jurisdiction":"USA -- California","citation":"CA Health & Safety Code 25249.5","id":"src_fe1d5adc"},{"id":"src_001","type":"database","title":"PubChem Compound CID 10913","url":"https://pubchem.ncbi.nlm.nih.gov/compound/10913","accessed":"2026-03-12","notes":"Chemical identity, properties, safety data","inherited_from_compound":"hq-c-org-000668"},{"id":"src_002","type":"epa","title":"EPA CompTox Chemicals Dashboard — DTXSID1027184","url":"https://comptox.epa.gov/dashboard/chemical/details/DTXSID1027184","accessed":"2026-03-12","notes":"Hazard, exposure, and toxicity data","inherited_from_compound":"hq-c-org-000668"}],"meta":{"schema_version":"4.0.0","last_updated":"2026-03-25","timestamp":"2026-05-14T01:28:35.706Z"}}