{"hq_id":"hq-p-fod-000044","name":"Foam Polystyrene Takeout Containers and Hot Beverage Cups","category":{"primary":"food_contact","secondary":"","tags":[]},"product_tier":"FOD","overall_risk_level":"high","description":"Styrene became a probable carcinogen in 2002. The FDA classified it safe for food contact in the 1960s.","synthesis":{"derived_risk_level":"moderate_to_high","synthesis_confidence":0.757,"synthesis_method":"compound_composition","context_used":"human_pregnant","context_source":"product_users","exposure_modifier":1.173,"vulnerability_escalated":true,"escalation_reason":"Child exposure group","compounds_resolved":2,"compounds_total":2,"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":"Frequent consumers of hot beverages/food in foam; fast-food and coffee-shop regular customers; low-income populations (higher takeout reliance)","overall_risk":"high","primary_concerns":["~25 billion EPS food service items per year in US. Styrene monomer migration from polystyrene into hot beverages and food. FDA GRAS designation from 1960s not re-evaluated since IARC 2A (2002) — 22-year gap. Canada federal EPS ban 2023. 5+ US states have bans; no federal action."],"exposure_routes":"Oral consumption of beverages and food in foam containers; styrene migration especially in hot liquids"},"exposure":{"routes":["dermal"],"contact_types":["oral_indirect","ingestion"],"users":["adult","child","pregnant"],"duration":"minutes","frequency":"daily","scenarios":["Incidental mouthing or hand-to-mouth transfer by children","Exposure during pregnancy with potential fetal transfer"],"notes":"Exposure to Foam Polystyrene Takeout Containers and Hot Beverage Cups occurs via dermal. Children and infants face higher exposure per body weight due to developing detoxification systems, higher surface-area-to-weight ratio, and behavioral factors (mouthing, crawling). Pregnant individuals face additional risk from placental transfer of absorbed compounds to the developing fetus."},"consumer_guidance":{"red_flags":[{"indicator":"Contains known carcinogen","meaning":"Styrene — classified by IARC or NTP as carcinogenic or probably carcinogenic to humans","action":"Minimize exposure; consider alternatives; follow use guidelines strictly"},{"indicator":"Overall risk level: high","meaning":"Multiple hazard pathways identified for this product category","action":"Limit exposure duration and frequency; use protective measures where applicable"}],"green_flags":[{"indicator":"Third-party tested for contaminants","meaning":"Independent lab verification of safety claims","verification":"Look for NSF, FDA, or EU compliance certification"}],"what_to_ask":[{"question":"What materials are in direct contact with food?","why_it_matters":"Migration of chemicals from packaging or cookware into food depends on the contact material, temperature, and duration"},{"question":"Has this product been tested for carcinogenic compounds?","why_it_matters":"Products in this category may contain or release carcinogenic compounds; independent testing provides verification beyond manufacturer claims"}],"alternatives":[{"name":"Paper or cardboard containers","notes":"Compostable, lower chemical leaching risk, better insulation"},{"name":"Molded fiber takeout containers","notes":"Recyclable, biodegradable, no styrene migration concerns"},{"name":"Glass or ceramic reusable containers","notes":"Durable, no chemical leaching, reduces single-use waste"}],"notes":null},"regulatory":{"applicable_regulations":[{"jurisdiction":"USA","regulation":"FDA 21 CFR Parts 170–189 (Food Contact Substances)","citation":null,"requirements":"All food-contact materials must comply with FDA regulations for indirect food additives. Materials must not transfer harmful substances to food above established thresholds.","compliance_status":null,"effective_date":null,"enforcing_agency":null,"penalties":null,"source_ref":null},{"jurisdiction":"EU","regulation":"Regulation (EC) No 1935/2004 (Framework Regulation on Food Contact Materials)","citation":null,"requirements":"Materials and articles intended to come into contact with food must not transfer constituents to food in quantities that could endanger human health or bring about unacceptable change in food composition.","compliance_status":null,"effective_date":null,"enforcing_agency":null,"penalties":null,"source_ref":null},{"jurisdiction":"EU","regulation":"Regulation (EU) No 10/2011 (Plastics in Food Contact)","citation":null,"requirements":"Specific migration limits (SMLs) for monomers and additives. Overall migration limit: 10 mg/dm² or 60 mg/kg food. Positive list of authorized substances.","compliance_status":null,"effective_date":null,"enforcing_agency":null,"penalties":null,"source_ref":null},{"jurisdiction":"USA — California","regulation":"California Proposition 65 (Safe Drinking Water and Toxic Enforcement Act)","citation":null,"requirements":"Products containing listed chemicals require clear warning labels if exposure exceeds safe harbor levels. Applies to food packaging, cookware, and food-contact products sold in California.","compliance_status":null,"effective_date":null,"enforcing_agency":null,"penalties":null,"source_ref":null}],"certifications":[{"name":"FDA 21 CFR","issuer":"FDA","standard":"21 CFR Parts 170-199","scope":"Food contact substances, indirect food additives, migration limits"},{"name":"EU 10/2011","issuer":"European Commission","standard":"Regulation (EU) No 10/2011","scope":"Plastic materials intended to come into contact with food"},{"name":"NSF/ANSI 51","issuer":"NSF International","standard":"NSF/ANSI 51 Food Equipment Materials","scope":"Materials used in commercial food equipment"}],"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":true,"disposal_guidance":"Recycle by resin code if marked; check local program; food-soiled items may not be accepted","hazardous_waste":false,"expected_lifespan":"1-3_years"},"formulation":{"form":"composite_material","key_ingredients":[{"hq_id":"hq-c-ino-000014","name":"Steel substrate","role":"base_material","concentration_pct":"85"},{"hq_id":"hq-c-ino-000047","name":"Tin coating","role":"coating","concentration_pct":"3-5"},{"hq_id":"hq-c-org-000633","name":"Epoxy resin lining (BPA-based historical)","role":"liner","concentration_pct":"1-2"},{"hq_id":"hq-c-org-000043","name":"Lacquer topcoat","role":"coating","concentration_pct":"0.5-1"}],"certifications":[]},"materials":{"common":[{"material_id":"hq-m-str-000092","material_name":"Polystyrene Food Contact Materials and Styrene Monomer Migration","component":null,"prevalence":"common"}],"concerning":[{"material_id":"hq-m-str-000092","concern":"Styrene monomer migration from polystyrene food contact articles up to 50 µg/L in hot beverages; styrene IARC 2A (probably carcinogenic, 2002); FDA GRAS not re-evaluated since 1960s despite 2002 IARC classification","compounds_of_concern":[],"source_refs":[]},{"material_id":"hq-m-str-000092","concern":"FDA styrene food contact GRAS designation unchanged for 60+ years despite IARC 2A (2002) and migration data; regulatory lag reflects framework inertia, not new evidence requirements","compounds_of_concern":[],"source_refs":[]},{"material_id":"hq-m-str-000092","concern":"~25 billion EPS food service items/year in US; state-level bans (5+ states) but no federal action; Canada federal EPS ban (2023) while US permits same products","compounds_of_concern":[],"source_refs":[]},{"material_id":"hq-m-str-000092","concern":"Potential contaminant: Styrene monomer","compounds_of_concern":["hq-c-org-001578"],"source_refs":[]}],"preferred":[{"material_id":"hq-m-str-000014","material_name":"Glass or stainless steel","why_preferred":"","tradeoffs":"No chemical migration; heavier; more expensive; not flexible","hq_id":"hq-m-str-000014"}]},"compound_composition":[{"hq_id":"hq-c-org-000016","compound_name":"Styrene","role":"base","typical_concentration":null},{"hq_id":"hq-c-org-000016","compound_name":"Styrene monomer","role":"contaminant","typical_concentration":null}],"identifiers":{"common_names":["foam cup","polystyrene container","EPS takeout","styrofoam"],"aliases":[],"manufacturer":null,"brands":[]},"brand_examples":[{"brand":"Generic Mass-Market Brand A","manufacturer":"Consumer Products Corporation","market_position":"mass_market","notable":"Widely available mass-market option"},{"brand":"Generic Mass-Market Brand B","manufacturer":"Consumer Goods Ltd","market_position":"mass_market","notable":"Popular budget alternative"},{"brand":"Premium Brand A","manufacturer":"Premium Consumer Inc","market_position":"premium","notable":"Upscale premium positioning"},{"brand":"Professional Brand","manufacturer":"Professional Products Co","market_position":"professional","notable":"Professional/salon-grade option"},{"brand":"Specialty Eco-Brand","manufacturer":"Natural Products Ltd","market_position":"premium","notable":"Sustainable/natural product line"}],"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":[{"id":"src_001","type":"regulatory","title":"IARC Styrene (Group 2A, 2002)","year":2002},{"id":"src_002","type":"regulatory","title":"EFSA Styrene Migration from Polystyrene (2014)","year":2014},{"id":"src_003","type":"regulatory","title":"Canada EPS Ban (2023)","year":2023}],"meta":{"schema_version":"4.0.0","last_updated":"2026-03-25","timestamp":"2026-05-13T22:22:28.330Z"}}