Water Treatment Slaked Lime
High-calcium slaked lime powder dosed into water for pH control, softening, and impurity removal in municipal plants. Under HTS 2522.20.00.00 as mineral-derived slaked lime, not synthetic hydroxide of 2825. It reacts to precipitate hardness minerals effectively.
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If pharmaceutical or laboratory-grade purity
High-purity Ca(OH)2 for chemical processes classifies in inorganic chemicals.
If pre-mixed as flocculant chemical preparation
Prepared water treatment chemicals with additives fall under Chapter 38.
If dolomitic rather than high-calcium lime
Magnesium-containing hydraulic limes have separate subheading.
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Import Tips & Compliance
• Submit water quality compliance certifications to justify industrial mineral classification
• Ensure bulk packaging meets food-grade standards if for potable water use
• Document reactivity tests to distinguish from slower-reacting dolomitic limes
Related Products under HTS 2522.20.00.00
Hydrated Lime Powder for Construction
Finely ground slaked lime produced by reacting quicklime with water, used primarily as a mortar additive in bricklaying and plastering. It falls under HTS 2522.20.00.00 as slaked lime, distinct from pure calcium hydroxide preparations in heading 2825. This quicklime-derived product hydrates to form a putty-like consistency for building applications.
Slaked Lime Putty for Plastering
Wet slaked lime paste stored in airtight containers for traditional lime plaster walls and decorative finishes. Classified under HTS 2522.20.00.00 as hydrated lime from quicklime, excluding hydraulic variants. Its high plasticity makes it ideal for breathable historic building restoration.
Agricultural Hydrated Lime for Soil pH Adjustment
Coarse slaked lime granules applied to acidic soils to raise pH and supply calcium for crop growth. HTS 2522.20.00.00 covers this quicklime-hydrated product used in farming, separate from Chapter 31 fertilizers. It neutralizes soil acidity without nitrogen or phosphate additives.
Flue Gas Desulfurization Slaked Lime
Reactive slaked lime injected into power plant scrubbers to capture SO2 emissions, forming gypsum byproduct. HTS 2522.20.00.00 applies to this industrial mineral product from hydrated quicklime. Essential for coal-fired emission controls.
Limewash Paint Base Slaked Lime
Slaked lime in powder or putty form mixed with pigments for breathable limewash coatings on historic buildings. Classified HTS 2522.20.00.00 as pure slaked lime, not Chapter 32 paints. Provides antifungal, vapor-permeable finishes.
Dolomitic Hydrated Lime
Partially slaked dolomitic lime containing magnesium for acid neutralization in steel production and agriculture. HTS 2522.20.00.00 includes this quicklime variant, differentiated from pure hydraulic lime. Offers slower reaction for sustained pH control.