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.
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If purity falls below 99.99% but still chemically defined
Other zinc sulfides without luminescent grade specification go to the residual subheading.
If supplied as inorganic color pigments rather than raw material
Chapter 32 covers pigments and preparations used for coloring, excluding pure chemical compounds.
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Import Tips & Compliance
• Obtain third-party assay reports for purity verification during customs; specify 'luminescent grade' on commercial invoice
• Check for REACH-like restrictions on sulfides in destination markets
Related Products 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.
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.