CAS 1314-56-3 · TSCA · United States of America

Phosphorus pentoxide (P2O5) under TSCA

P2O5 (P4O10) · 五氧化二磷

Status: Listed. Phosphorus pentoxide is on the TSCA Inventory and currently listed as TSCA Active. **No specific OSHA PEL for phosphorus pentoxide** at 29 CFR 1910.1000 Table Z-1 (verify against https://www.osha.gov/annotated-pels before relying); the hydrolysis product H3PO4 carries OSHA PEL 1 mg/m3 8-hr TWA + 3 mg/m3 STEL Table Z-1 which provides operative exposure benchmark. 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 P2O5 currently (verify against https://access.trade.gov/ before invoicing). Section 301 List 3 25% additional duty applies on Chinese-origin P2O5 (HS 280910) (verify against current USTR Section 301 schedule before invoicing). Major US domestic P2O5 producers (typically integrated with phosphorus electric-arc operations): ICL Performance Products + Solvay Specialty Phosphates US operations (verify each company-site pair against the producer's public website before relying).

US P2O5 lane: **No specific OSHA PEL (hydrolysis H3PO4 PEL 1 mg/m3 applies) + Section 301 List 3 + Class 8 PG II corrosive transport**. NOT on Cal Prop 65. NO active US AD/CVD. Major US producers: ICL Performance Products + Solvay Specialty Phosphates.