Dicyandiamide Curing Agent DCDA
DCDA (dicyandiamide) curing agent is a latent hardener for thermoset polymers like epoxies, falling under HTS 2926.20.00.00 as a pure nitrile-function compound per chapter definitions. It remains classifiable here even with minor stabilizers for transport.
Import Duty Rates by Country of Origin
| Origin Country | MFN Rate | Ch.99 Surcharges | Total Effective Rate |
|---|---|---|---|
| šØš³China | Free | +35.0% | 35% |
| š²š½Mexico | Free | +10.0% | 10% |
| šØš¦Canada | Free | +10.0% | 10% |
| š©šŖGermany | Free | +10.0% | 10% |
| šÆšµJapan | Free | +10.0% | 10% |
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If esterified with organic acids from earlier subchapters
Esters classified with the later subchapter compound per note 3(A), potentially shifting from nitrile if acid function dominates.
If when reacted into epoxy resin pre-polymer
Finished polymers from Chapter 29 intermediates move to Chapter 39; state of completion changes classification.
If for phosphinates or similar if misidentified as inorganic
Organo-inorganic confusion, but heading 2931 excludes sulfonated/halogenated; pure dicyandiamide stays organic nitrile.
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Import Tips & Compliance
ā¢ Label with GHS pictograms for skin irritant hazards; provide end-use statement for composites to expedite CBP review; test for free cyanide content under 10 ppm
Related Products under HTS 2926.20.00.00
Dicyandiamide (1-Cyanoguanamide)
Dicyandiamide, also known as 1-cyanoguanidine, is a white crystalline powder classified under HTS 2926.20.00.00 as a nitrile-function compound due to its cyano group (-Cā”N) attached to the guanidine structure. It serves as a key intermediate in organic synthesis for epoxy resins and pharmaceuticals.
Industrial Grade Dicyandiamide Powder
Industrial grade dicyandiamide is a high-purity (99.5%) white powder used as a curing agent for epoxy resins, classified under HTS 2926.20.00.00 for its nitrile-function structure. It meets chapter notes as a separate chemically defined organic compound without disqualifying additions.
Pharma Grade 1-Cyanoguanidine
Pharmaceutical grade 1-cyanoguanidine (USP/EP compliant) is a nitrile-function compound under HTS 2926.20.00.00, used as an intermediate in synthesizing antiviral and antidiabetic drugs. Its classification adheres to chapter note (a) as a separate chemically defined compound.
Technical Dicyandiamide Flakes
Technical grade dicyandiamide in flake form is used in water treatment as a precipitant, classified under HTS 2926.20.00.00 for its 1-cyanoguanidine chemical structure. It qualifies under chapter note (f) if minor anti-caking agents are added solely for transport.
High-Purity Dicyandiamide 99.9%
High-purity 99.9% dicyandiamide is a specialty chemical for flame-retardant formulations, under HTS 2926.20.00.00 as a nitrile-function organic compound. Its classification follows chapter note (a) without impurities affecting heading.