Natural Hydraulic Lime NHL 2 from Mexico
Natural hydraulic lime NHL 2 is a powdered binder made from limestone containing natural silica and alumina impurities, calcined to produce hydraulic properties. It sets and hardens through a chemical reaction with water, even underwater, distinguishing it from non-hydraulic limes. Classified under HTS 2522.30.00.00 as hydraulic lime, excluding calcium oxide and hydroxide of heading 2825.
Duty Rate — Mexico → United States
10%
Rate breakdown
9903.05.5510%Except for products described in headings 9903.05.85–9903.05.92 and 9903.05.94, articles the product of Mexico, as provided for in U.S. note 52 to this subchapter
Import Tips
• Obtain certificates verifying hydraulic properties and natural origin to avoid reclassification as slaked lime under 2522.20
• Check for free moisture content limits, as excessive water may trigger heading 2522.10 classification for quicklime
• Provide end-use documentation for construction to prevent misclassification under Chapter 38 cement mixtures