Base
HTS 2510Chapter 25

HTS 2510 — Natural calcium phosphates, natural aluminum calcium phosphates and phosphatic chalk: Duty Rate & Import Guide

Salt, Sulfur, Earths, Stone, Cement · 15 pending regulations · 15 court cases · $32.3M monthly imports · 100% from 1 countries · Updated daily from USITC

Duty Rates

General

Free

Special

Free

Column 2

Free

Trade Agreement Eligibility

CUSMAKORUS

Trade Intelligence

Monthly Imports

$32.3M

2026-01

Trade Concentration

100%

from top 3 of 1 origins

Regulatory Pressure

HIGH

0 rulings — · 15 reg · 9 CIT, 6 CAFC (1 recent)

Global Rates

🇺🇸 Free

🇬🇧 United Kingdom: N/A · 🇪🇺 European Union: N/A · 🇨🇦 Canada: N/A · 🇧🇷 Brazil: N/A

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Data compiled from USITC HTS, US Census Bureau, Federal Register, CourtListener · As of 2026-04-26 · Updates monthly

Active DisputesRecent court cases or pending regulations affect this code
Regulatory Pressure

This code has elevated regulatory activity — 0 CBP rulings (0 in last 2 years, trend: stable), 15 pending Federal Register actions, and 15 CIT/CAFC cases.

Supply Chain Risk

100% of US imports for this code come from just 1 countries. High origin concentration increases exposure to trade disruptions or tariff escalations.

Subheadings (2)

CodeDescriptionRate
2510.10.00.00UngroundFree
2510.20.00.00GroundFree

Federal Register (15)

Rule2022-19953
2022-09-16

Procedures Covering Suspension of Liquidation, Duties and Estimated Duties in Accord With Presidential Proclamation 10414

Final rule.·Effective 2022-11-15

Notice2022-12790
2022-06-14

Antidumping Duty Orders on Sulfanilic Acid From India and the People's Republic of China and Countervailing Duty Order on Sulfanilic Acid From India: Final Results of Sunset Reviews and Revocation of Orders

Rule2023-00702
2023-01-19

National Organic Program (NOP); Strengthening Organic Enforcement

Final rule.·Effective 2023-03-20

Notice2021-24958
2021-11-18

Publication of a Report on the Effect of Imports of Transformers and Transformer Components on the National Security: An Investigation Conducted Under Section 232 of the Trade Expansion Act of 1962, as Amended

Publication of a report.

Notice2019-26741
2019-12-12

Review of Action: Enforcement of U.S. WTO Rights in Large Civil Aircraft Dispute

Enforcement of U.S. WTO Rights in Large Civil Aircraft Dispute

View all 15+ regulations on Federal Register →

Court of International Trade & Federal Circuit (15)

Lashify, Inc. v. Itc2025-03-05
23-1245Court of Appeals for the Federal Circuit
CVB, Inc. v. United States2023-12-19
21-00288United States Court of International Trade
BRAL Corp. v. United States2023-03-20
20-00154United States Court of International Trade
Starkist Co. v. United States2022-03-30
21-1548Court of Appeals for the Federal Circuit
TR Int'l Trading Co. v. United States2020-03-16
19-00022United States Court of International Trade
View all 15+ cases on PACER →

Matching Export Code (Schedule B)

2510100000Schedule B

NATURAL CALCIUM PHOSPHATES, NATURAL ALUMINUM CALCIUM PHOSPHATES AND PHOSPHATIC CHALK, UNGROUND

Census Bureau export classification matching this HTS import code.

← 2505.90.00.002510.10.00.00 →