CAS 1344-28-1 · TSCA · United States of America

Aluminium oxide (alumina) under TSCA

Al2O3 · 氧化铝

Status: Listed. Aluminium oxide is on the TSCA Inventory and currently listed as TSCA Active. **OSHA PEL for aluminium oxide at 29 CFR 1910.1000 Table Z-1: 15 mg/m3 total dust + 5 mg/m3 respirable fraction (verify against https://www.osha.gov/annotated-pels before relying); NIOSH REL (categorical for nuisance dust framework): 10 mg/m3 total dust + 5 mg/m3 respirable, verify against cdc.gov/niosh.** 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). NO active US AD/CVD case on Chinese-origin aluminium oxide currently (verify against https://access.trade.gov/ before invoicing); however, **the US has multiple active AD/CVD measures on Chinese-origin downstream aluminium products (Aluminum Foil A-570-053 / C-570-054, Aluminum Extrusions A-570-967 / C-570-968, Common Alloy Aluminum Sheet A-570-073 / C-570-074, Aluminum Wire and Cable A-570-095 / C-570-096, etc.); verify each case number and current cash-deposit rates against access.trade.gov before invoicing**. Section 232 25% additional duty applies on certain Chinese-origin aluminium products (verify against current Section 232 schedule before invoicing). Section 301 List 3 25% additional duty applies on Chinese-origin aluminium oxide (HS 281820) (verify against current USTR Section 301 schedule before invoicing). USP / NF monograph applies for pharma-grade activated alumina. Major US domestic producers (verify each company-site pair against the producer's public website before relying): Almatis Leetsdale Pennsylvania plus Bauxite Arkansas calcined / specialty alumina operations, Sasol North America Lake Charles Louisiana high-purity alumina operations, Imerys Andersonville Georgia bauxite / refractory alumina operations.

US aluminium oxide lane: **OSHA PEL 15/5 + multiple active AD/CVD on downstream aluminium products (Foil A-570-053, Extrusions A-570-967, Common Alloy Sheet A-570-073, Wire and Cable A-570-095) + Section 232 + Section 301 List 3**. NOT on Cal Prop 65. **Downstream aluminium-product AD/CVD is the operative chain duty exposure; verify cash-deposit rates against access.trade.gov before invoicing.** Major US producers: Almatis (Pennsylvania + Arkansas), Sasol NA (Louisiana), Imerys (Georgia).