2530.20.20

Analysis

HTS 2530.20.20 covers kieserite, epsom salts (natural magnesium sulfates): epsom salts under heading 2530 (mineral substances not elsewhere specified or included).

Rates on the nearby lines range from duty-free to 2.9%. The costliest confusion would be with 2530.90.20 (natural micaceous iron oxides) at 2.9%, a difference of 2.9 points on the customs value.

There is no general-rate duty on this line, which puts it with roughly 91% of the 78 tariff lines in chapter 25 that are also free. Free here means free of the base duty only: origin-specific Chapter 99 duties such as Section 301 can still be owed.

Goods from countries without normal trade relations pay the column 2 rate of 20% instead of nothing, so origin decides between free entry and a 20% duty.

Census statistics map these goods to NAICS 21239 (Other Nonmetallic Mineral Mining and Quarrying), an industry of 236 US establishments employing 10,238 people, the industry a domestic producer of these goods reports under.

Every edition we compared, from Jan 2023 to Oct 2026 (Rev. 22), shows the same general rate of Free.