Calcium Carbonate Filler Masterbatch
Masterbatch containing 70-80% calcium carbonate dispersed in polymer carrier, but classified under HTS 2836.50.00.00 when imported as chemical concentrate. Used for plastics compounding to reduce costs.
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If polyethylene carrier >50%
Polymer masterbatches with mineral fillers classify by plastic resin type under Chapter 39.
If additive package for plastics
Commercial preparations for plastics fall under chemical preparations heading.
If complex carbonate salt
Complex metal carbonates like basic copper carbonate have separate subheadings.
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Import Tips & Compliance
• Provide formulation sheets showing CaCO3 >50% to maintain inorganic compound status
• Sample for CBP chemistry lab if polymer content approaches 50% threshold
• Declare exact CaCO3/polymer ratio to prevent reclassification as plastic pellets
Related Products under HTS 2836.50.00.00
Precipitated Calcium Carbonate (PCC)
Precipitated calcium carbonate is a fine, white powder produced by chemical precipitation from calcium hydroxide and carbon dioxide, classified under HTS 2836.50.00.00 as chemically defined calcium carbonate. It is widely used as a filler in paper, plastics, and paints to enhance brightness and opacity.
Ground Calcium Carbonate (GCC) Powder
Ground calcium carbonate is a micronized powder derived from high-purity limestone, meeting the definition of calcium carbonate under HTS 2836.50.00.00 when chemically processed. Used in pharmaceuticals, food supplements, and as an antacid.
Nano Calcium Carbonate
Nano-sized calcium carbonate particles (1-100 nm) produced via precipitation for high-performance applications, classified as calcium carbonate under HTS 2836.50.00.00. Used in tire rubber reinforcement, coatings, and advanced composites.
Pharmaceutical Grade Calcium Carbonate USP
USP-grade calcium carbonate meeting pharmacopeia standards for purity and microbial limits, classified under HTS 2836.50.00.00 as chemically defined compound. Primary ingredient in antacids like Tums and calcium supplements.
Food Grade Calcium Carbonate E170
E170 food additive calcium carbonate used as acidity regulator, anticaking agent, and nutrient source, classified under HTS 2836.50.00.00. Meets FCC standards for direct food contact applications.
Heavy Calcium Carbonate 1250 Mesh
Ultra-fine heavy calcium carbonate (D97<4.5μm) from marble grinding, classified under HTS 2836.50.00.00 for industrial filler applications. Used in PVC pipes, masterbatches, and powder coatings.