2522.10.00.00 - Quicklime
Details
| Field | Value |
|---|---|
| Unit of Quantity | kg |
| General Rate of Duty | Free |
| Special Rate of Duty | N/A |
| Column 2 Rate of Duty | 0.2¢/kg, including weight of container |
| Quota Quantity | N/A |
| Additional Duties | N/A |
Overview
This HTS category, 2522.10.00.00, specifically covers quicklime. Quicklime, also known as calcium oxide (CaO), is produced by calcining calcium carbonate (limestone) at high temperatures. It is an essential industrial chemical characterized by its highly reactive nature when exposed to water. Its primary uses are in steel manufacturing, construction as a component of mortar and plaster, and in various chemical processes.
Distinguishing quicklime from its sibling categories is crucial for accurate classification. Quicklime (2522.10.00.00) is distinct from slaked lime (2522.20.00.00), which is the product of adding water to quicklime to form calcium hydroxide. Hydraulic lime (2522.30.00.00), the other sibling, is a type of lime that can set and harden even in the presence of water due to the presence of clay or other siliceous materials in its raw limestone. Therefore, the classification hinges on the degree of hydration and the presence of specific impurities that impart hydraulic properties.
As this is a leaf node within the HTS, there are no further subcategories under 2522.10.00.00. Classification within this specific code relies on ensuring the product is indeed quicklime, characterized by its chemical composition (primarily calcium oxide) and its production method (calcination of limestone), and not slaked or hydraulic lime. Imported goods identified as calcium oxide derived from limestone calcination will fall under this heading.