U.S. imports of Carbonates & Peroxocarbonates (Other) (HS 283699) totaled $9.3M in August 2026, imported from 26 countries.
Importers of Carbonates & Peroxocarbonates (Other) paid $362K in duties in August 2026, an average duty rate of 3.93% — duty actually collected as a share of the imports that cleared customs, not the published tariff schedule.
Last updated: August 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.
150 import shipments a month
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.
Trade Directory
List your company under HS 283699 — Carbonates & Peroxocarbonates (Other), so the companies trading it can find you. Be the first supplier listed.
Subheading 2 of 8 in heading 2836
Subheading 283699 · $9.3M of $39.6M
ImportsExports
Imports
$9.3MYoY · free account
Exports
$4.8MYoY · free account
12-mo low · imports
Low · free accountOver the twelve months to August 2026, the U.S. imported $109.8M of Carbonates & Peroxocarbonates (Other) and exported $46.9M.
Through August 2026. Source: U.S. Census Bureau.
HS10 import codes under this HS6 parent, each with its own page. Source: U.S. Harmonized Tariff Schedule.
| Code | Description | Imports for consumption | Average duty rate | Dutiable Share | Duty Collected |
|---|---|---|---|---|---|
| 2836995050 | Peroxocarbonates (Percarbonates), NESOI | $7.6M | 2.84% | 53.83% | $215K |
| 2836995010 | Zirconium Carbonates | $1.2M | 7.84% | 71.07% | $94K |
| 2836993000 | Commercial Ammonium Carbonates | $412K | 12.55% | 96.01% | $52K |
| 2836992000 | Bismuth Carbonate | $7K | 15.50% | 100.00% | $1K |
| 2836994000 | Lead Carbonate | — | -- | -- | -- |
| 2836991000 | Cobalt Carbonates | — | -- | -- | -- |
| 2836995000 | Peroxocarbonates (Percarbonates), NESOI | — | -- | -- | -- |
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 | $3.1M |
| 2836994000 | Lead Carbonate | $1.7M |
| 2836993000 | Commercial Ammonium Carbonates | $14K |
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.
Imports · August 2026
origin
Australia and Philippines together supply 58% of it. China pays 29.9% duty; Australia 0.0%.
customs district
destination
entry
rate provision · imports
41.5% enters free of duty; duty collected equals 3.93% of imports for consumption.