Calcium Tungstate Powder
Calcium tungstate (CaWO4) powder is a tungstate salt used in fluorescent materials and X-ray screens, under HTS 2841.80.0050 for other tungstates. It qualifies as a chemically defined inorganic compound per Chapter notes.
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Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If prepared as luminophore
Chapter note excludes luminophores to heading 3206.
If radioactive isotope form
Natural/artificial radioactive compounds go to 2844.
If in prepared chemical prep for lab
Prepared chemical mixtures for analysis classify in 3824.
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Import Tips & Compliance
• Certify particle size and purity to rule out optical element classification
• Declare radioactivity if artificially doped, shifting to 2844
• Avoid bulk packaging confusion with 2849 carbides
Related Products under HTS 2841.80.00.50
Sodium Tungstate Dihydrate
Sodium tungstate dihydrate (Na2WO4·2H2O) is a white crystalline salt derived from tungstic acid, classified under HTS 2841.80.0050 as an 'other' tungstate (wolframate) salt of a peroxometallic or oxometallic acid. It is commonly used in the production of tungsten metal and as a reagent in chemical synthesis.
Ammonium Paratungstate
Ammonium paratungstate ((NH4)10[H2W12O42]·4H2O) is a key intermediate salt in tungsten processing, fitting HTS 2841.80.0050 as an 'other' tungstate salt. It is thermally decomposed to produce tungsten oxide for further metal refinement.
Potassium Tungstate
Potassium tungstate (K2WO4) is an inorganic salt of tungstic acid used in fireproofing textiles and as a catalyst precursor, classified in HTS 2841.80.0050 as other tungstates. It meets Chapter 28 criteria for chemically defined metal salts.
Magnesium Tungstate
Magnesium tungstate (MgWO4) is a crystalline salt employed in scintillation detectors and phosphors, classified as other tungstates in HTS 2841.80.0050. It is a simple oxometallic salt excluded from other chapters.
Lithium Tungstate Crystals
Lithium tungstate (Li2WO4) crystals serve in nonlinear optics and as flux in metallurgy, falling under HTS 2841.80.0050 as other tungstates. Classified here as unworked chemical compound per electronics doping note.
Barium Tungstate
Barium tungstate (BaWO4) is used in X-ray contrast and ceramics, classified in HTS 2841.80.0050 for other tungstate salts. It adheres to definitions for metal tungstates excluding complex forms.