2522.10.00

Analysis

HTS 2522.10.00 covers quicklime, slaked lime and hydraulic lime, other than calcium oxide and hydroxide of heading 2825: quicklime under heading 2522 (quicklime, slaked lime and hydraulic lime, other than calcium oxide and hydroxide of…).

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.

The other lines in the same group are 2522.20.00 (quicklime, slaked lime and hydraulic lime, other than…, duty-free) and 2522.30.00 (quicklime, slaked lime and hydraulic lime, other than…, duty-free).

Census statistics map these goods to NAICS 327410 (Lime Manufacturing), an industry of 93 US establishments employing 4,068 people, the industry a domestic producer of these goods reports under.

All 2 neighbouring lines carry the same duty-free rate, so a borderline choice between them changes the statistics reported, not the duty paid.

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