Coated Calcium Carbonate Stearic Acid

Calcium carbonate particles surface-treated with stearic acid for hydrophobic properties, still classified as base compound under HTS 2836.50.00.00 if coating <5%. Used in polyolefin films and sheets.

Import Duty Rates by Country of Origin

Origin CountryMFN RateCh.99 SurchargesTotal Effective Rate
🇨🇳ChinaFree+35.0%35%
🇲🇽MexicoFree+10.0%10%
🇨🇦CanadaFree+10.0%10%
🇩🇪GermanyFree+10.0%10%
🇯🇵JapanFree+10.0%10%

Alternative Classifications

This product could be classified differently depending on its characteristics or intended use.

3824.99.93Higher: 40% vs 35%

If coating >10% by weight

Heavily coated particles become chemical preparations/additives.

2915.70.01Higher: 40% vs 35%

If imported as stearates only

Pure stearic acid or metal stearates classify under organic acids Chapter 29.

3901.90.90.00Lower: 31.5% vs 35%

If dispersed in polymer matrix

Polymer compounds with fillers become plastic materials Chapter 39.

Not sure which classification is right?

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Import Tips & Compliance

Quantify coating percentage via TGA analysis (<5% maintains compound status)

Test for dispersion quality in LLDPE matrix per ASTM standards

Declare organic coating components separately on entry documents

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.

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.