Loading...
HSChapter 28
U.S. imports of calcium carbonate (HS 283650) totaled $2.5M in April 2026, traded with 22 countries.
Importers of Calcium Carbonate paid $195K in duties in April 2026 — an effective duty rate of 10% on $1.9M in dutiable value, based on actual customs collections rather than the published tariff schedule. Calcium Carbonate imports of $2.5M in April 2026 ran 12% below the year-to-date monthly average of $2.9M.
Last updated: April 2026 dataCalcium carbonate is one of the most widely traded inorganic minerals in global commerce, serving as a filler and coating pigment in paper and plastics, a dietary calcium supplement, an antacid active ingredient, and a construction material additive. Vietnam has emerged as the leading US import source under tariff line 2836500000, driven by its abundant limestone reserves and competitive processing costs, with Canada and Japan also supplying significant volumes. Particle size, surface treatment (coated vs. uncoated), and purity grade are the key specification variables that determine end-use suitability and pricing — distinctions that are not captured by the single HTS line. Food-grade and pharmaceutical-grade calcium carbonate are subject to FDA admissibility review.
AI-written summary of the official U.S. Census Bureau trade figures on this page — verify before relying on it.
Both ground calcium carbonate (mechanically milled from limestone or marble) and precipitated calcium carbonate (chemically synthesized for controlled particle size and morphology) are classified under 2836500000 — the HTS does not distinguish between them. However, PCC commands a significant price premium due to its controlled particle size distribution and surface area, and buyers should specify GCC or PCC clearly on purchase orders and invoices to ensure the correct product is shipped and to support any downstream quality or regulatory documentation.
Calcium carbonate used as a dietary supplement ingredient or antacid active pharmaceutical ingredient is subject to FDA admissibility review, including evaluation of purity, heavy-metal limits, and compliance with USP or food-chemical codex monographs. Importers should obtain certificates of analysis from the foreign manufacturer and ensure the product meets applicable FDA specifications before shipment. Classification and admissibility are complex; consult a licensed customs broker or FDA-registered agent to confirm the correct regulatory pathway.
Supplier Network
Get discovered by U.S. importers searching for HS 283650 — Calcium Carbonate. Be the first supplier listed.
Monthly import values over time
| Country | Imports | Exports | Balance |
|---|---|---|---|
| CANADA | $547K | $1.7M | +$1.2M |
| MEXICO | $90K | $895K | +$805K |
| VIETNAM | $866K | $20K | -$845K |
| BANGLADESH | -- | $597K | +$597K |
| JAPAN | $410K | $36K | -$374K |
HS10 import codes under this HS6 parent. Source: U.S. Harmonized Tariff Schedule.
| Code | Description | Import Value | Effective Tariff % | Duty Collected |
|---|---|---|---|---|
| 2836500000 | CALCIUM CARBONATE | $2.5M | 10.42% | $195K |
CALCIUM CARBONATE
HS10 export codes under this HS6 parent. Source: U.S. Schedule B export classification.
| Code | Description | Export Value |
|---|---|---|
| 2836500000 | CALCIUM CARBONATE | $4.6M |
CALCIUM CARBONATE
4.7M kg
URANIUM ENRICHED IN U235 ETC. PLUTONIUM ETC.
HS 284420
NATURAL URANIUM & COMPOUNDS, ALLOYS & CERAMICS ETC
HS 284410
ANHYDROUS AMMONIA
HS 281410
ALLOYS, DISPERSIONS,ISOTOPES & COMPOUNDS NES
HS 284443
SILICON, UNDER 99.99% (BY WEIGHT) SILICON
HS 280469
PHOSPHORIC ACID AND POLYPHOSPHORIC ACIDS
HS 280920
| State | Imports | Exports | Balance |
|---|---|---|---|
| Georgia | $148K | $1.1M | +$960K |
| New York | $878K | $172K | -$706K |
| New Jersey | $322K | $648K | +$326K |
| Port | Imports | Exports | Balance |
|---|---|---|---|
| NEWARK, NJ | $948K | $346K | -$602K |
| LAREDO, TX | $79K | $779K | +$700K |
| NEW YORK, NY | $31K | $465K | +$434K |