CAS 1314-13-2 · TSCA · United States of America

Zinc oxide (ZnO) under TSCA

ZnO · 氧化锌

Status: Listed. Zinc oxide is on the TSCA Inventory and currently listed as TSCA Active. **OSHA PEL 5 mg/m^3 fume + dust value (verify exact fume vs total-dust vs respirable-dust split against https://www.osha.gov/annotated-pels Table Z-1 before invoicing; secondary sources cite 10 mg/m^3 and 15 mg/m^3 inconsistently for the dust form)** at 29 CFR 1910.1000 Table Z-1. NOT on EPA RMP threshold list. NOT on DEA scheduling. NOT on California Proposition 65 (verify against OEHHA https://oehha.ca.gov/proposition-65/proposition-65-list before relying on negative listing). **TRI Section 313 listed under "zinc compounds" category**: Form R annual reporting required. NO active US AD/CVD case on Chinese-origin zinc oxide currently (verify against https://access.trade.gov/ before invoicing). Section 301 List 3 25% additional duty applies on Chinese-origin zinc oxide (HS 281700). FDA 21 CFR 347 sunscreen monograph permits zinc oxide as Category I sunscreen active ingredient (verify current monograph status against https://www.fda.gov/drugs/over-counter-otc-nonprescription-drugs/sunscreen-otc-products before relying). Major US domestic producers (verify each company-site pair against the producer's public website before relying): Horsehead Holding (legacy capacity), American Zinc Recycling, Pasminco / Zinifex / Nyrstar (Clarksville Tennessee).

The US zinc oxide lane has **light regulatory profile**: NOT on Cal Prop 65, NOT on RMP, NOT on DEA, NO active AD. OSHA PEL 5 mg/m^3 fume + dust value (verify exact dust figure against https://www.osha.gov/annotated-pels Table Z-1; secondary sources split between 10 and 15 mg/m^3). **TRI Form R annual reporting under "zinc compounds" category**. FDA 21 CFR 347 sunscreen monograph (Category I) permits OTC sunscreen use. Section 301 List 3 25% additional duty applies. Major US producers: Horsehead Holding (legacy), American Zinc Recycling, Pasminco / Zinifex / Nyrstar.