Chapter 2830 — Customs Tariff Headings
Subheadings
Products classified under Tariff item 28.30
Anhydrous Sodium Sulfide Powder
Anhydrous sodium sulfide powder is a pure, chemically defined compound of sodium and sulfur (Na2S). It is used in chemical synthesis, water treatment, and as a sulfur source, and it falls under tariff item 2830.10.00 as a sodium sulphide. The product is highly reactive with air and moisture, requiring careful handling.
2830.10.00High Purity Sodium Sulfide 98%+
High purity sodium sulfide at 98%+ is a chemically defined compound meeting ACS reagent specifications for laboratory and electronic applications. It is classified under tariff item 2830.10.00 as a sodium sulphide, with low iron content and amber-free properties. This grade is suitable for precise chemical processes.
2830.10.00Industrial Sodium Sulfide for Leather Tanning
Industrial sodium sulfide in coarse crystal form is optimized for leather tanning, specifically for unhairing processes. It is a chemically defined sodium sulfide compound and falls under tariff item 2830.10.00. The product is typically supplied in bulk 1-ton supersacks for manufacturing use.
2830.10.00Pharmaceutical Grade Sodium Sulfide
Pharmaceutical grade sodium sulfide is a high-purity, chemically defined compound meeting USP standards for pharmaceutical synthesis and API production. It is classified under tariff item 2830.10.00 as a sodium sulphide. The product is supplied in sealed glass bottles to maintain purity.
2830.10.00Sodium Hydrosulfide Flake Alternative (Na2S Equiv.)
Sodium hydrosulfide (NaHS) flakes are a sulfur-containing inorganic compound used in mining flotation, leather processing, and water treatment. Although chemically distinct from sodium sulfide (Na2S), they are traded and declared as sodium sulfide equivalent for certain industrial applications. Under the Customs Tariff of Canada, this product is classified as a sodium sulphide when presented as such, falling under tariff item 2830.10.00.
2830.10.00Sodium Sulfide Flakes 60%
Sodium sulfide flakes at 60% purity, typically in the form of Na2S·9H2O, are used in leather tanning, dye manufacturing, and ore flotation. This chemically defined compound falls under tariff item 2830.10.00 as a sodium sulphide. The flake form offers easier handling than powder.
2830.10.00Sodium Sulfide Nonahydrate Crystals
Sodium sulfide nonahydrate crystals (Na2S·9H2O) are the most common commercial hydrate form of sodium sulfide, used in mining and chemical manufacturing. This chemically defined compound is classified under tariff item 2830.10.00 as a sodium sulphide. The crystals range from colorless to yellow.
2830.10.00Sodium Sulfide Pearls 70% Purity
Sodium sulfide pearls at 70% purity are a pearl-form of Na2S designed for easier handling in dye and pigment production. This chemically defined sodium sulfide falls under tariff item 2830.10.00. The pearl form is less dusty than powder, improving workplace safety.
2830.10.00Sodium Sulfide Solution 12% Aqueous
Sodium sulfide solution at 12% aqueous is a dissolved form of Na2S used for wastewater treatment and depilatory applications. It is classified under tariff item 2830.10.00 as a sodium sulphide, as it is a solution of a chemically defined compound in water. The product is stored in HDPE drums to prevent reactions.
2830.10.00Technical Grade Sodium Sulfide 56% Flakes
Technical grade sodium sulfide flakes at 56% assay are used in industrial applications such as pulp bleaching and photography. This chemically defined sodium sulfide compound falls under tariff item 2830.10.00. The yellow flakes have a characteristic sulfur odor and are supplied in bulk.
2830.90.0099.99% Pure Luminescent ZnS for OLED Displays
Ultra-pure zinc sulfide powder with a purity of at least 99.99%, designated for use as a luminescent material in OLED display manufacturing. This chemically defined compound of zinc and sulfur falls under tariff item 2830.90.00 as a sulphide other than those specifically enumerated elsewhere in Chapter 28.
2830.90.00Antimony Trisulfide Powder
Antimony trisulfide (Sb2S3) is a red pigment and friction material used in matches and ammunition primers. It qualifies under tariff item 2830.90.00 as an 'Other' chemically defined sulfide, distinct from the cadmium sulfides listed separately.
2830.90.00Bismuth Sulfide Flakes
Bismuth sulfide (Bi2S3) flakes used in thermoelectric materials and pigments. It is an 'Other' sulfide under tariff item 2830.90.00, chemically defined per Chapter 28 notes.
2830.90.00Cadmium Sulfide for Glass Coloring
Cadmium sulfide specifically for producing stable yellow colors in glass tableware and decorative bottles. This chemically defined sulphide is classifiable under tariff item 2830.90.00 as an other sulphide, as it is not a finished pigment preparation.
2830.90.00Cadmium Sulfide Luminescent Grade
Specially prepared cadmium sulfide activated for phosphorescence in glow-in-the-dark paints and safety markings. While activated, it may still be classifiable under tariff item 2830.90.00 if the activation does not render it a prepared luminophore of heading 32.06.
2830.90.00Cadmium Sulfide Pigment Grade
Cadmium sulfide in pigment-grade form, offering excellent lightfastness and opacity for high-end artists' oil paints and automotive coatings. This chemically defined inorganic sulfide of cadmium falls under tariff item 2830.90.00 as 'Other' sulphides, distinct from more specialized forms.
2830.90.00Cadmium Sulfide Powder
High-purity cadmium sulfide (CdS) powder used primarily as a pigment in paints, coatings, and plastics for its bright yellow color. It is a chemically defined inorganic sulfide of cadmium, classified under tariff item 2830.90.00 as 'Other' sulphides.
2830.90.00Cadmium Sulfide Technical Grade Yellow
Technical-grade cadmium sulfide providing cost-effective yellow pigmentation for plastics, rubber, and ceramics. This chemically defined sulfide is classified under tariff item 2830.90.00 as 'Other' sulphides, known for thermal stability in industrial applications.
2830.90.00Cobalt Sulfide Granules
Cobalt sulfide (CoS) granules for hydrodesulfurization catalysts. This chemically defined sulfide is classified under tariff item 2830.90.00 as 'Other' sulphides, per Chapter 28 notes.
2830.90.00Copper(I) Sulfide Powder
Copper(I) sulfide (Cu2S) powder employed in mineral flotation and as a semiconductor material. Classified under tariff item 2830.90.00 as 'Other' chemically defined sulfides.
2830.90.00Doped Luminescent ZnS Powder 99.99% Base Purity
Zinc sulfide powder with a 99.99% base purity, lightly doped to achieve specific emission wavelengths for display applications. The dopant level is minimal and does not alter the chemically defined nature of the zinc sulfide, keeping it classifiable under tariff item 2830.90.00.
2830.90.00High-Purity Cadmium Sulfide for Semiconductors
Ultra-high purity (6N) cadmium sulfide crystals or powder for manufacturing II-VI compound semiconductors like CdS photodetectors. This chemically defined cadmium sulfide falls under tariff item 2830.90.00 as 'Other' sulphides, provided it is not doped or cut into wafer forms.
2830.90.00High-Purity Zinc Sulfide (99.99%) for Thin Films
Ultra-pure zinc sulfide granules for physical vapor deposition (PVD) in optical thin films. This chemically defined sulphide is classifiable under tariff item 2830.90.00, as it is not in a worked form excluded by Chapter 28 notes.
2830.90.00High-Purity ZnS Luminescent Crystals (99.99%)
Crystalline zinc sulfide of luminescent grade with purity exceeding 99.99%, used as a scintillator material in radiation detection equipment. As a chemically defined inorganic sulphide, it is classifiable under tariff item 2830.90.00, provided it is not in a worked form excluded by Chapter 28 notes.
2830.90.00Indium Sulfide Flakes
Indium sulfide (In2S3) flakes for thin-film solar cells. This chemically defined sulfide is classified under tariff item 2830.90.00 as 'Other' sulphides.
2830.90.00Iron Sulfide Powder
Iron sulfide (FeS) powder for pyrite pigments and sulfur release applications. This chemically defined sulfide is classified under tariff item 2830.90.00 as 'Other' sulphides.
2830.90.00Lead Sulfide Crystals
Lead sulfide (PbS) crystals for infrared detectors. This chemically defined sulfide is classified under tariff item 2830.90.00 as 'Other' sulphides, per Chapter 28 notes.
2830.90.00Luminescent Grade Zinc Sulfide Powder (99.99% Purity)
High-purity zinc sulfide powder, luminescent grade with 99.99% or more purity, used in the production of phosphors for displays and lighting. This chemically defined compound is classifiable under tariff item 2830.90.00 as a sulphide other than those specifically listed elsewhere.
2830.90.00Luminescent ZnS Pellets 99.99% for Vapor Deposition
Pelletized zinc sulfide, luminescent grade at 99.99% purity, used as an evaporation source material for thin-film luminescent coatings. The pellets are a chemically defined sulphide in a physical form suitable for deposition, classifiable under tariff item 2830.90.00.
2830.90.00Manganese Sulfide Granules
Manganese sulfide (MnS) granules used as a desulfurizer in steel production and in ceramics. This chemically defined sulfide falls under tariff item 2830.90.00 for 'Other' sulfides not specifically enumerated.
2830.90.00Molybdenum Disulfide Powder
Molybdenum disulfide (MoS2) powder for lubricants and catalysts. This chemically defined sulfide is classified under tariff item 2830.90.00 as 'Other' sulphides.
2830.90.00Nano Cadmium Sulfide Particles
Cadmium sulfide nanoparticles (10-50nm) for quantum dot applications in displays and biomedical imaging. Still classified as chemically defined CdS under tariff item 2830.90.00 when >99% pure, even if surface-capped, as the primary component remains the inorganic sulfide.
2830.90.00Nickel Sulfide Powder
Nickel sulfide (NiS) powder, a chemically defined inorganic compound, used as a catalyst in hydrogenation processes and as a precursor for battery cathode materials. It is classified under tariff item 2830.90.00 as an 'other' sulfide, not elsewhere specified in the chapter.
2830.90.00Phosphor-Grade Zinc Sulfide Granules 99.99% Pure
Granular zinc sulfide, luminescent grade at 99.99% purity or higher, used in manufacturing cathode ray tube phosphors and fluorescent lamps. This chemically defined sulphide is classifiable under tariff item 2830.90.00 as an other sulphide.
2830.90.00Scintillation-Grade Zinc Sulfide 99.99% Purity
Zinc sulfide of luminescent grade with 99.99% or greater purity, optimized for scintillation screens in medical imaging devices. As a chemically defined inorganic sulphide, it is classifiable under tariff item 2830.90.00, provided it is imported in bulk form and not as part of a finished device.
2830.90.00Silver Sulfide Powder
Silver sulfide (Ag2S) powder, a chemically defined inorganic compound, primarily used as an analytical standard in laboratory testing. It falls under tariff item 2830.90.00 as an 'other' sulfide, since no more specific heading applies.
2830.90.00Synthetic Cadmium Sulfide Crystals
Synthetic single-crystal cadmium sulfide grown for optical research and thin-film deposition in photovoltaics. This pure compound form qualifies for tariff item 2830.90.00 as 'Other' cadmium sulfide, typically sized 1-10mm for laboratory use.
2830.90.00Synthetic Zinc Sulfide Crystals
Laboratory-grown zinc sulfide single crystals used in infrared optics and laser components. These crystals are a chemically defined sulphide, classifiable under tariff item 2830.90.00, provided they are not cut into optical elements.
2830.90.00Tungsten Disulfide Powder
Tungsten disulfide (WS2) powder, a chemically defined inorganic compound, used as a dry lubricant in high-temperature and vacuum applications. It is classified under tariff item 2830.90.00 as an 'other' sulfide, not being a polysulfide of heading 28.31.
2830.90.00Ultra-High Purity Luminescent Zinc Sulfide (5N Grade)
5N (99.999%) luminescent grade zinc sulfide, exceeding the 99.99% threshold, for advanced phosphor applications in lasers. This ultra-high-purity chemically defined compound is classifiable under tariff item 2830.90.00 as a sulphide.
2830.90.00Zinc Sulfide Crystals
Zinc sulfide (ZnS) crystals, a chemically defined inorganic compound, used in optical coatings, phosphors, and semiconductor applications. They are classified under tariff item 2830.90.00 as 'other' sulfides, provided they are not doped for electronics use.
2830.90.00Zinc Sulfide Nanopowder
Ultrafine zinc sulfide particles (<100nm) for quantum dot synthesis and anti-reflective coatings. This nanopowder is a chemically defined sulphide, classifiable under tariff item 2830.90.00, as particle size does not affect its chemical definition.
2830.90.00Zinc Sulfide Phosphor Precursor
Refined zinc sulfide used to produce ZnS:Cu/Au phosphors for electroluminescent panels. In its unactivated state, this product is a chemically defined sulphide, classifiable under tariff item 2830.90.00.
2830.90.00Zinc Sulfide Powder (Luminescent Grade)
High-purity zinc sulfide powder used as a phosphor precursor in manufacturing glow-in-the-dark materials and fluorescent pigments. This chemically defined sulphide is classifiable under tariff item 2830.90.00.