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.
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 manufactured into finished optical elements like lenses
Chapter exclusions send worked optical elements of Chapter 28 materials to 9001.
If doped for semiconductor wafers or discs
Chemically doped nonmetal compounds in disc/wafer form classify in 3818 per chapter note.
If in powdered form as glass frit for enamels
Glass powders or flakes for pigments classify in 3207, excluded from Chapter 28.
Not sure which classification is right?
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Import Tips & Compliance
• Declare exact chemical composition and CAS number (1303-33-9) on commercial invoice to support HTS classification
• Comply with ITAR/EAR export controls if destined for optical/military end-use; obtain end-user certificates
• Use DOT-approved packaging for toxic substances; avoid common pitfall of under-declaring arsenic content leading to penalties
Related Products under HTS 2813.90.10.00
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.
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.