{"hq_id":"hq-p-wer-000049","name":"Recycled Polyester from PET Bottles (Antimony, Chemical Contaminants, Downcycling)","category":{"primary":"wearable","secondary":"textile","tags":["recycled polyester","rPET","antimony","downcycling","PET bottles","sustainability","microplastic","circular"]},"product_tier":"WER","overall_risk_level":"low","description":"Recycled polyester (rPET) is made from post-consumer PET bottles — marketed as sustainable, but carries chemical concerns. Antimony trioxide (Sb2O3) catalyst from original PET production persists through recycling (0.02-0.03% by weight). Post-consumer PET bottles may contain trace contaminants from prior contents, UV degradation products, and accumulated microplastics. rPET fabric still sheds microfibers during laundry (same as virgin polyester). The process is technically downcycling: rPET garments cannot be recycled back into PET bottles or garments efficiently (contamination from dyes, finishes). Patagonia and other brands use rPET extensively — environmental benefit is real (reduces virgin PET production) but not circular.","synthesis":{"derived_risk_level":"extreme","synthesis_confidence":0.879,"synthesis_method":"compound_composition","context_used":"human_child","context_source":"product_users","exposure_modifier":1.4,"vulnerability_escalated":false,"escalation_reason":null,"compounds_resolved":1,"compounds_total":1,"synthesis_date":"2026-03-27","synthesis_version":"1.0.0"},"hazard_summary":{"sensitive_populations":"general population (microfiber exposure), sensitive skin individuals","overall_risk":"low","primary_concerns":["Antimony trioxide catalyst persists through PET recycling (IARC 2B)","Post-consumer PET contaminants may carry through to fiber","Microfiber shedding identical to virgin polyester (ocean microplastic)","Downcycling: rPET garments not recyclable back to PET (not circular)"],"exposure_routes":"Dermal (wearing); inhalation (microfibers); environmental (laundry microfiber discharge)"},"exposure":{"routes":["dermal","inhalation"],"contact_types":["skin_prolonged","inhalation"],"users":["adult","child"],"duration":"continuous","frequency":"daily","scenarios":["Wearing rPET garments: antimony and trace contaminant dermal contact","Laundry: microfiber shedding identical to virgin polyester","Inhalation of microfibers from rPET fabric surface","Antimony leaching accelerated by sweat and body heat"],"notes":"Antimony trioxide in PET: used as polycondensation catalyst at ~300 ppm. Sb2O3: IARC Group 2B (possibly carcinogenic). Consumer garment exposure: very low — antimony migration from solid polyester fiber is minimal compared to liquid contact (bottles). Environmental benefit of rPET: reduces virgin PET production, diverts bottles from landfill/ocean. But: rPET garments shed microfibers identical to virgin polyester. True textile-to-textile recycling (chemical recycling of polyester garments back to fiber) is emerging but <1% of recycled polyester currently. GRS (Global Recycled Standard) certifies recycled content and processing."},"consumer_guidance":{"usage_warning":"rPET is genuinely better than virgin polyester environmentally (diverts plastic waste). But it still sheds microfibers — use Guppyfriend bag. Antimony exposure from wearing rPET garments is very low (solid fiber, not liquid contact). For sensitive skin: choose OEKO-TEX certified rPET. rPET is not truly circular — textile-to-textile recycling is still emerging.","safer_alternatives":["GRS (Global Recycled Standard) certified rPET","OEKO-TEX certified rPET garments (tested for harmful substances)","Natural fibers (organic cotton, wool, linen) for zero microplastic","Guppyfriend bag for all synthetic garment washing"]},"regulatory":{"applicable_regulations":[{"jurisdiction":"International","regulation":"GRS (Global Recycled Standard)","citation":"GRS 4.0","requirements":"Certifies recycled content (≥20%), chain of custody, social/environmental/chemical requirements. Restricted substance list for processing.","compliance_status":null,"effective_date":null,"enforcing_agency":"Textile Exchange / certified bodies","penalties":null,"source_ref":null}],"certifications":[{"name":"GRS","issuer":"Textile Exchange","standard":"Global Recycled Standard 4.0","scope":"Certifies recycled content and responsible processing of recycled materials."}],"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":"rPET garments: textile recycling or donation. Cannot be recycled back to PET bottles (downcycled material).","hazardous_waste":false,"expected_lifespan":"2-10_years"},"formulation":{"form":"varies","key_ingredients":[],"certifications":[]},"materials":{"common":[],"concerning":[],"preferred":[]},"compound_composition":[{"hq_id":"hq-c-ino-000060","compound_name":null,"role":"catalyst_residue","typical_concentration":"0.02-0.03%"}],"identifiers":{"common_names":["recycled polyester from pet bottles (antimony, chemical contaminants, downcycling)"],"aliases":[],"manufacturer":null,"brands":[]},"brand_examples":[{"brand":"Patagonia","manufacturer":"Patagonia","market_position":"premium","notable":"Fleece and synthetic outdoor wear"},{"brand":"Columbia","manufacturer":"Columbia Sportswear","market_position":"mass_market","notable":"Synthetic outdoor clothing"},{"brand":"Guppyfriend","manufacturer":"Guppyfriend","market_position":"premium","notable":"Microfiber-catching laundry bag"}],"sources":[{"type":"expert_curation","name":"ALETHEIA Safety Database","date":"2026-03-25"},{"type":"regulation","title":"GRS (Global Recycled Standard) (GRS 4.0)","jurisdiction":"International","citation":"GRS 4.0","id":"src_76752318"},{"id":"iarc_radium_v78_2001","type":"regulatory","title":"IARC Monograph Volume 78 2001: Radium-226 Group 1; Radium Girls Dial Painters Osteosarcoma Leukemia; Calcium Analog Bone Incorporation; Alpha Decay Chain Rn-222; 1600-Year Half-Life; Double-Strand DNA Breaks Dense Ionization Tracks","year":2001,"inherited_from_compound":"hq-c-ino-000060"},{"id":"epa_radionuclides_rule_2000","type":"regulatory","title":"US EPA Radionuclides Rule 2000: Combined Ra-226+Ra-228 MCL 5 pCi/L MCLG 0; Group A Known Carcinogen; Lifetime Cancer Risk 1–2×10−4 at MCL; Ion Exchange Reverse Osmosis Lime Softening Treatment; Midwest Southeast Aquifer Occurrence","year":2000,"inherited_from_compound":"hq-c-ino-000060"}],"meta":{"schema_version":"4.0.0","last_updated":"2026-03-25","timestamp":"2026-05-02T18:17:50.104Z"}}