Zinc sulfide, luminescent grade having a purity of 99.99 percent or more by weight
Sulfides; polysulfides, whether or not chemically defined: > Other: > Zinc sulfide, luminescent grade having a purity of 99.99 percent or more by weight
Duty Rate (from China)
Except for products described in headings 9903.03.02–9903.03.11, articles the product of any country, as provided for in subdivision (aa) of U.S. note 2 to this subchapter
Except as provided in headings 9903.88.13, 9903.88.18, 9903.88.33, 9903.88.34, 9903.88.35, 9903.88.36, 9903.88.37, 9903.88.38, 9903.88.40, 9903.88.41, 9903.88.43, 9903.88.45, 9903.88.46, 9903.88.48, 9903.88.56, 9903.88.64, 9903.88.66, 9903.88.67, 9903.88.68, or 9903.88.69, articles the product of China, as provided for in U.S. note 20(e) to this subchapter and as provided for in the subheadings enumerated in U.S. note 20(f)
Products classified under HTS 2830.90.10.00
Luminescent Grade Zinc Sulfide Powder (99.99% Purity)
High-purity zinc sulfide powder, luminescent grade with 99.99% or more purity by weight, used primarily in the production of phosphors for displays and lighting. It falls under HTS 2830.90.1000 as a chemically defined sulfide of zinc meeting the specific purity and grade requirements for luminescent applications. This subheading distinguishes it from lower-purity or non-luminescent zinc sulfides.
High-Purity ZnS Luminescent Crystals (99.99%)
Crystalline zinc sulfide of luminescent grade with purity exceeding 99.99% by weight, ideal for scintillator materials in radiation detectors. Classified under HTS 2830.90.1000 due to its chemical definition as zinc sulfide meeting the luminescent purity standard in Chapter 28. Excludes lower grades or non-luminescent uses.
Phosphor-Grade Zinc Sulfide Granules 99.99% Pure
Granular form of zinc sulfide, luminescent grade at 99.99% purity or higher, used in manufacturing cathode ray tube phosphors and fluorescent lamps. This product is specifically covered by HTS 2830.90.1000 as a high-purity sulfide for luminescent applications per Chapter 28 notes. Purity distinguishes it from commodity zinc sulfides.
99.99% Pure Luminescent ZnS for OLED Displays
Ultra-pure zinc sulfide powder designated luminescent grade (≥99.99% purity) for phosphor layers in organic LED manufacturing. Falls under HTS 2830.90.1000 as a chemically defined zinc sulfide meeting the subheading's high-purity luminescent criteria. Not for general pigment or filler uses.
Scintillation-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. Classified in HTS 2830.90.1000 per Chapter 28 for high-purity sulfides intended for luminescence. Excludes impure or non-luminescent grades.
Luminescent ZnS Pellets 99.99% for Vapor Deposition
Pelletized zinc sulfide, luminescent grade at 99.99% purity, used as evaporation source material for thin-film luminescent coatings. HTS 2830.90.1000 applies as it's a chemically defined high-purity sulfide for luminescence, unworked form per chapter provisions.
Ultra-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. Covered by HTS 2830.90.1000 as zinc sulfide luminescent grade with specified minimum purity. Chapter notes confirm inclusion as chemically defined.
Doped Luminescent ZnS Powder 99.99% Base Purity
Zinc sulfide luminescent grade powder (99.99% ZnS purity) lightly doped for specific emission wavelengths in displays. Still classifiable under HTS 2830.90.1000 if dopant levels keep it chemically defined as primary zinc sulfide. Minimal doping doesn't alter base classification.