CAS 7440-66-6 · TSCA · United States of America

Zinc metal (Zn) under TSCA

Zn · 锌

Status: Active. Zinc metal is on the TSCA Active Inventory. **NOT typically Cal Prop 65 listed at refined zinc level** (verify against OEHHA https://oehha.ca.gov/proposition-65/proposition-65-list before relying; specific zinc compounds such as zinc pyrithione may have separate listings). **Multiple US AD/CVD investigations on Chinese-origin downstream zinc-coated steel PRODUCTS exist (corrosion-resistant steel, continuous-galvanised + galvalume + galvanneal, plus zinc anode + zinc oxide downstream); verify each case + current cash-deposit rate per producer at https://access.trade.gov/ before invoicing**; the cash-deposit rate at customs is the operative number. **Section 232 steel + aluminium tariffs (Proclamation 9705 + 9704, March 2018, 25% steel + 10% aluminium) apply to galvanised steel imports as steel-product derivatives**; verify current Section 232 status + any zinc-product extensions or expansions against https://www.commerce.gov/ + https://www.bis.doc.gov/ before invoicing.

Zinc metal is TSCA-Active with **multiple US AD/CVD investigations on Chinese-origin downstream zinc-coated steel PRODUCTS (corrosion-resistant + galvanised + galvalume + galvanneal); verify per case + current cash-deposit rate per producer at access.trade.gov before invoicing**. **Section 232 steel tariffs (25%, March 2018, Proclamation 9705) apply to galvanised steel imports as steel derivatives**. OSHA PEL zinc oxide fume 5 mg/m3 + dust value per 29 CFR 1910.1000 Table Z-1 (verify exact total-dust vs respirable-dust split against osha.gov/annotated-pels). **US is structurally a net-importer of refined zinc; primary sources Canada (Teck Trail BC) + Mexico + Peru + Australia + domestic (Nyrstar Clarksville TN + Korea Zinc Glasgow KY).** **AD/CVD on downstream zinc-coated steel + Section 232 steel tariffs are the practical US-import compliance pivots.**

Listing and threshold

Substance Zinc metal (Zn) (CAS 7440-66-6), Zn
Regime US Toxic Substances Control Act (TSCA), administered by EPA
Jurisdiction United States of America
Status Active
Tonnage threshold TSCA Section 8(a) Chemical Data Reporting (CDR) at >25,000 lb/year per US site (massive metal exemption may apply)

Classifications under this regime

  • TSCA Active Inventory
  • **Multiple US AD/CVD investigations on Chinese-origin downstream zinc-coated steel PRODUCTS (corrosion-resistant steel + galvanised + galvalume + galvanneal + zinc anode + zinc oxide); verify each case + current cash-deposit rate per producer at https://access.trade.gov/ before relying**
  • **Section 232 steel tariffs (Proclamation 9705, 25%, March 2018) apply to galvanised steel imports as steel derivatives** (verify against https://www.commerce.gov/ + https://www.bis.doc.gov/)
  • OSHA PEL: zinc oxide fume 5 mg/m3 8-hr TWA + zinc oxide dust value per 29 CFR 1910.1000 Table Z-1 (verify exact total-dust vs respirable-dust figure against https://www.osha.gov/annotated-pels Table Z-1 before invoicing; NIOSH Pocket Guide cites total dust 15 mg/m3 + respirable 5 mg/m3)
  • NIOSH REL: zinc oxide fume 5 mg/m3 8-hr TWA + 10 mg/m3 STEL (verify against current https://www.cdc.gov/niosh/npg/)
  • IARC: Not classified (verify against https://monographs.iarc.who.int/ before relying)
  • **NOT typically Cal Prop 65 listed at refined zinc level** (verify against https://oehha.ca.gov/proposition-65/proposition-65-list)
  • DOT 49 CFR: ZINC POWDER UN 1383 Class 4.2 PG II at zinc powder / dust form; massive zinc metal NOT regulated
  • **LME Special High Grade Zinc (SHG, ≥99.995% Zn) + COMEX Zinc futures contracts**

Restrictions and conditions of use

  • **Multiple US AD/CVD investigations on Chinese-origin downstream zinc-coated steel PRODUCTS; verify per case + current cash-deposit rate per producer at https://access.trade.gov/ before invoicing**
  • **Section 232 steel tariffs (Proclamation 9705, 25%, March 2018) apply to galvanised steel imports as steel derivatives**
  • OSHA PEL zinc oxide fume 5 mg/m3 + dust value per 29 CFR 1910.1000 Table Z-1 (verify exact total-dust vs respirable-dust figure against https://www.osha.gov/annotated-pels before relying)
  • EPA TRI reporting for zinc + zinc compounds (verify against https://www.epa.gov/toxics-release-inventory-tri-program)
  • EPA RCRA: zinc does not have a TC limit at 40 CFR 261.24 Table 1; zinc compounds may carry F-listed waste codes from electroplating (F006 + F007 + F008 + F009 + F019) (verify against ecfr.gov)

Importer obligations

TSCA Section 13 import certification (positive). **AD/CVD scope determination per Chinese-origin downstream zinc-coated steel product per case + per producer at https://access.trade.gov/.** **Section 232 steel tariffs apply to galvanised steel imports.** US is structurally a net-importer of refined zinc; primary sources Canada (Teck Resources Trail BC + Glencore CEZinc Quebec), Mexico (Industrias Penoles Torreon), Peru (Volcan + Glencore), Australia (Nyrstar Hobart TAS + Port Pirie SA), domestic (Nyrstar Clarksville TN + Korea Zinc Glasgow KY). Major Chinese exporters (downstream products): Zhuzhou Smelter Group, Yunnan Chihong, Hechi Nanfang, Liuzhou China Tin, Shaanxi Dongling, Bayannur Zijin Wuxin.

Required documents

  • TSCA Section 13 import certification
  • CBP entry HS 7901 (unwrought zinc) / 7902 (waste + scrap) / 7903-7907 (downstream products)
  • SDS (Aquatic Acute 1 + Aquatic Chronic 1 in particulate / powder form; pyrophoric where dust)
  • **AD/CVD entry documentation CBP Form 7501 per Chinese-origin downstream zinc-coated steel product per case + per producer (verify per case at https://access.trade.gov/)**
  • **Section 232 steel tariff documentation per Proclamation 9705 for galvanised steel derivatives where applicable**
  • DOT shipping papers UN 1383 Class 4.2 PG II for zinc powder / dust
  • EPA TRI reporting documentation for zinc compounds where placed on US site at threshold
  • COMEX warehouse warrant where contract delivery

Common compliance traps

The pitfalls that have bitten importers on this lane in the past. None of these is theoretical.

  • **Multiple US AD/CVD investigations on Chinese-origin downstream zinc-coated steel PRODUCTS (corrosion-resistant + galvanised + galvalume + galvanneal); verify per case + current cash-deposit rate per producer at access.trade.gov before invoicing**
  • **Section 232 steel tariffs (25%, March 2018, Proclamation 9705) apply to galvanised steel imports as steel derivatives**
  • OSHA PEL zinc oxide fume 5 mg/m3 + dust value per 29 CFR 1910.1000 Table Z-1 (verify exact total-dust vs respirable-dust figure against https://www.osha.gov/annotated-pels)
  • EPA TRI reporting for zinc + zinc compounds
  • **~50% galvanising (hot-dip + continuous-galvanising-line for automotive + construction steel) + ~17% die-cast + ~17% brass + ~16% battery + ~6% chemicals downstream**
  • **US is structurally a net-importer of refined zinc**; primary sources Canada + Mexico + Peru + Australia + domestic

Where to read next

For substance-level identifiers (formula, molecular weight, SMILES, InChIKey), GHS hazard profile, IMDG transport class, and full sourcing reference for zinc metal (zn), see the CAS 7440-66-6 sourcing reference.

For grade-by-grade buying notes, freight maths, supplier-tier pricing, and a worked landed-cost example, the zinc metal (zn) cornerstone hub covers the full sourcing chain.

For the structure and history of TSCA, see the TSCA glossary entry.

Need cross-jurisdiction compliance support on this substance? Run it through the REACH / TSCA / IECSC / AICIS / K-REACH checker, or send us the substance and the destination and we will quote FOB China and CIF / DDP landed including the regulatory work on the destination side.

Read next

Cross-jurisdiction profile and sourcing references

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