Chemical Synthesis Silicon Chunks

Irregular silicon chunks (98-99% purity) for organosilicon compound manufacturing like silanes. Chemically defined under 2804.69.50.00 as other nonmetal silicon.

Import Duty Rates by Country of Origin

Origin CountryMFN RateCh.99 SurchargesTotal Effective Rate
🇨🇳China5.5%+10.0%15.5%
🇲🇽Mexico5.5%+10.0%15.5%
🇨🇦Canada5.5%+10.0%15.5%
🇩🇪Germany5.5%+10.0%15.5%
🇯🇵Japan5.5%+10.0%15.5%

Alternative Classifications

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

2931Lower: 13.7% vs 15.5%

If further processed into organosilicon compounds

Organic silicon derivatives move to Chapter 29 per Chapter 28 exclusions.

2804.61.00Higher: 50% vs 15.5%

If ultra-high purity chunks

Exceeds 'pure' threshold for semiconductor applications.

3824.99Lower: 15% vs 15.5%

If with organic stabilizers

Stabilized silicon mixtures excluded from pure elemental classification.

Not sure which classification is right?

Our AI classifier can analyze your specific product and recommend the correct HTS code with confidence.

Import Tips & Compliance

Submit intended end-use affidavits if borderline with Chapter 29 organosilicons

Ensure inert atmosphere packaging certifications for reactive material