Arsenic Trisulfide Powder
Arsenic trisulfide (As2S3) is a chemically defined sulfide of arsenic, appearing as a yellow-orange powder used in the production of semiconductors and infrared optical materials. It falls under HTS 2813.90.10.00 as a sulfide of nonmetals specifically of arsenic, distinct from commercial phosphorus trisulfide. This compound is valued for its semiconducting properties in chalcogenide glasses.
Import Duty Rates by Country of Origin
| Origin Country | MFN Rate | Ch.99 Surcharges | Total Effective Rate |
|---|---|---|---|
| 🇨🇳China | Free | +25.0% | 25% |
| 🇲🇽Mexico | Free | — | Free |
| 🇨🇦Canada | Free | — | Free |
| 🇩🇪Germany | Free | — | Free |
| 🇯🇵Japan | Free | — | Free |
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If prepared as a complex salt with metals or ammonium
Chapter notes specify double or complex salts of sulfides classify in 2842, not simple sulfides of nonmetals.
If impure or mixed with organic stabilizers for industrial formulations
Mixtures or preparations not chemically defined fall under 3824 as other chemical preparations.
If in oxide form rather than sulfide
Arsenic oxides classify in 2811, while sulfides specifically go to 2813 per chapter exclusions.
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Import Tips & Compliance
• Obtain EPA approvals and TSCA registration prior to import due to arsenic toxicity; provide Material Safety Data Sheets (MSDS)
• Ensure packaging complies with UN hazardous materials regulations for toxic solids; label as 'Arsenic compound, solid, toxic, n.o.s.',Verify purity documentation to confirm classification as chemically defined arsenic sulfide, avoiding reclassification to waste streams
Related Products under HTS 2813.90.10.00
Arsenic Sulfide Glass Chunks
Chunks of arsenic sulfide-based glass (As2S3) used for molding into infrared lenses and windows. Classified under HTS 2813.90.10.00 as it is chemically defined arsenic sulfide in solid form, meeting Chapter 28 Note 1 criteria before further processing into optical elements. Primarily imported for defense and thermal imaging applications.
Synthetic Orpiment Pigment (Arsenic Trisulfide)
Synthetic orpiment, chemically pure arsenic trisulfide (As2S3), used as a yellow pigment in artist's oils and restoration work. Falls under HTS 2813.90.10.00 as a chemically defined sulfide of arsenic, not qualifying as a color lake or preparation under Chapter 32 exclusions. Historically mimicked natural orpiment mineral.
Arsenic Disulfide Crystals
High-purity arsenic disulfide (As2S2) crystals grown for research in photoconductive materials and phase-change memory devices. Classified in HTS 2813.90.10.00 as 'other' sulfides of arsenic, chemically defined per Chapter 28/29 notes. Supplied in ampoules under inert gas.
Diarsenic Trisulfide Nanomaterials
Nanoparticles of diarsenic trisulfide (As2S3) for applications in nonlinear optics and solar cells. HTS 2813.90.10.00 covers this chemically defined arsenic sulfide regardless of particle size, as long as purity meets Chapter Note standards. Imported in suspension or dry powder form.
Arsenic Pentasulfide Flakes
Arsenic pentasulfide (As2S5) in flake form, a reactive arsenic sulfide used in organic synthesis and depilatory agents. Falls under HTS 2813.90.10.00 as 'other' sulfides of arsenic, chemically defined and excluded from organo-inorganic compounds. Highly unstable, stabilized with organics minimally.