Retort Carbon
Retort carbon is a high-purity carbon produced in retorts from coal or peat, used in electrode manufacturing and chemical processes. It qualifies under HTS 2704.00.00.50 as 'retort carbon' in the 'other' category.
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If refined to >99% carbon content as carbon black precursor
High-purity carbons for pigments or electrodes move to Chapter 28 as elemental carbon.
If when shaped into carbon electrodes
Finished carbon electrodes are electrical articles in Chapter 85, not raw retort carbon.
If chemically activated for filtration
Activated carbon from retort processes becomes a chemical preparation in 3824.
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Import Tips & Compliance
• Provide production process certifications specifying retort method to confirm classification
• Ensure purity assays (>95% carbon) to differentiate from lower-grade semicoke
• Declare as bulk industrial material to avoid retail packaging misclassifications
Related Products under HTS 2704.00.00.50
Metallurgical Coke
Metallurgical coke is a high-carbon fuel produced by heating coking coal in the absence of air, used primarily in blast furnaces for iron production. It falls under HTS 2704.00.00.50 as coke of coal, not agglomerated, and classified as 'other' since it is not specified elsewhere in the heading.
Foundry Coke
Foundry coke is a porous, low-ash coke derived from coal, ideal for cupola furnaces in metal casting operations. Classified under HTS 2704.00.00.50 as 'other' coal coke, whether or not agglomerated, due to its production process and fuel application.
Lignite Coke
Lignite coke, or brown coal coke, is produced by carbonizing lignite, used as a low-cost fuel in power generation and industrial heating. It is covered by HTS 2704.00.00.50 as coke or semicoke of lignite, in the 'other' category.
Peat Coke
Peat coke is obtained by heating peat in retorts, serving as an eco-fuel for heating and gasification plants. HTS 2704.00.00.50 includes it as coke or semicoke of peat, categorized under 'other'.
Coal Semicoke
Coal semicoke is a partially carbonized coal product with higher volatiles than full coke, used in cement kilns and boilers. It is included in HTS 2704.00.00.50 as semicoke of coal, under 'other'.
Briquetted Metallurgical Coke
Briquetted metallurgical coke is agglomerated coal coke formed into uniform lumps for consistent blast furnace feed. HTS 2704.00.00.50 covers it as agglomerated coke of coal in the 'other' subcategory.