Loading...
HSChapter 28
U.S. imports of carbonates & peroxocarbonates (other) (HS 283699) totaled $10.7M in July 2026, traded with 26 countries.
Importers of Carbonates & Peroxocarbonates (Other) paid $575K in duties in July 2026 — an effective duty rate of 8.7% on $6.6M in dutiable value, based on actual customs collections rather than the published tariff schedule. Carbonates & Peroxocarbonates (Other) imports of $10.7M in July 2026 ran 11% above the year-to-date monthly average of $9.7M.
Last updated: July 2026 dataSpanning cobalt carbonates, bismuth carbonate, commercial ammonium carbonates, lead carbonate, zirconium carbonates, and various peroxocarbonates (percarbonates), this residual heading captures a chemically diverse set of inorganic salts used across ceramics, pigments, mining, and industrial bleaching applications. Australia and the Philippines lead US import supply — reflecting cobalt and zirconium mineral processing capacity in the Asia-Pacific region — with Germany and China also significant sources. The breadth of distinct 10-digit lines (including 2836991000 through 2836999050) means correct classification requires identifying the specific metal cation or peroxo structure, as misclassification between, for example, cobalt carbonate and zirconium carbonate carries meaningful duty and trade-remedy implications.
AI-written summary of the official U.S. Census Bureau trade figures on this page — verify before relying on it.
152 shipments/mo
Peroxocarbonates contain a peroxo linkage (–O–O–) in the anion structure, distinguishing them chemically from simple carbonate salts. Sodium percarbonate, a common bleaching agent, is a typical example. Under the US schedule, peroxocarbonates not otherwise specified fall under lines 2836995050 or 2836999050 depending on their specific composition, while named compounds such as zirconium carbonates have their own dedicated line (2836995010).
Cobalt carbonate (2836991000) must be distinguished from cobalt oxides, cobalt hydroxides, and cobalt salts of organic acids, all of which classify elsewhere. Given cobalt's critical-mineral status and potential trade-remedy exposure on certain origins, misclassification can result in underpayment of duties or incorrect country-of-origin determinations. A licensed customs broker familiar with inorganic cobalt chemistry is advisable for high-volume shipments.
Supplier Network
Get discovered by U.S. importers searching for HS 283699 — Carbonates & Peroxocarbonates (Other). Be the first supplier listed.
HS10 import codes under this HS6 parent, each with its own page. Source: U.S. Harmonized Tariff Schedule.
| Code | Description | Import Value | Effective Tariff % | Dutiable Share | Duty Collected |
|---|---|---|---|---|---|
| 2836995050 | Peroxocarbonates (Percarbonates), NESOI | $8.0M | 2.92% | 49.47% | $234K |
| 2836995010 | Zirconium Carbonates | $1.5M | 17.73% | 95.09% | $262K |
| 2836991000 | Cobalt Carbonates | $835K | 4.18% | 99.57% | $35K |
| 2836993000 | Commercial Ammonium Carbonates | $416K | 10.24% | 96.05% | $43K |
| 2836992000 | Bismuth Carbonate | $13K | 15.50% | 100.00% | $2K |
| 2836994000 | Lead Carbonate | $0 | -- | -- | -- |
| 2836995000 | Peroxocarbonates (Percarbonates), NESOI | $0 | -- | -- | -- |
HS10 export codes under this HS6 parent, each with its own page. Source: U.S. Schedule B export classification.
| Code | Description | Export Value |
|---|---|---|
| 2836999050 | Peroxocarbonates (Percarbonates), NESOI | $3.8M |
| 2836993000 | Commercial Ammonium Carbonates | $151K |
Import lines come from the U.S. Harmonized Tariff Schedule and export lines from Schedule B. The two are numbered by different agencies, so the same 10-digit code can appear in both tables describing a different product.
ImportsExports
Imports
$10.7MYoY · Pro
Exports
$4.0MYoY · Pro
12-mo low · imports
YoY · ProThrough July 2026. Source: U.S. Census Bureau.
Imports · July 2026
origin
Australia and Germany together supply 49% of it.
customs district
destination
entry
rate provision · imports
40.3% enters free of duty; the effective duty rate is 5.35%.