Zinc Dichromate Passivation Salt
Zinc dichromate is a chromate salt used for metal surface passivation, meeting the definition of metal salts of peroxometallic acids. Classified as 'other' under HTS 2841.50.91.00. Essential in automotive and aerospace coating pretreatments.
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Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If incorporated into paint or varnish formulations
Paints and varnishes containing chromates shift to Chapter 32.
If for industrial use as prepared anticorrosives
Prepared mixtures for specific uses classify under 3824.
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Import Tips & Compliance
• Supply ISO purity certs; passivation grades must prove chemical definition
• RoHS/REACH declarations required due to Cr(VI); avoid EU rejects
Related Products under HTS 2841.50.91.00
Sodium Dichromate Dihydrate
Sodium dichromate dihydrate (Na2Cr2O7·2H2O) is a crystalline orange salt of a peroxometallic acid, specifically a dichromate of sodium. It falls under HTS 2841.50.91.00 as 'other' chromates, dichromates, and peroxochromates not specified elsewhere in the subheading. Primarily used in leather tanning, pigment production, and wood preservation.
Potassium Dichromate Crystals
Potassium dichromate (K2Cr2O7) in crystalline form is a strong oxidizer and salt of dichromic acid. Classified under HTS 2841.50.91.00 as an 'other' dichromate, distinct from basic chromates like chromic acid. Widely used in analytical chemistry, photography, and as a mordant in dyeing.
Ammonium Peroxochromate Powder
Ammonium peroxochromate is a peroxometallic salt containing the peroxodichromate anion, fitting Chapter 28 notes for ammonium salts of oxometallic acids. It is classified in HTS 2841.50.91.00 as 'other' peroxochromates. Applied in bleaching agents and specialized oxidation processes.
Barium Chromate Yellow Pigment Base
Barium chromate (BaCrO4), known as lemon chrome, is a chemically defined chromate salt used as a pigment precursor. It is classified under HTS 2841.50.91.00 as other chromates. Primarily for high-temperature paints and pyrotechnics.
Strontium Chromate Inhibitor Crystals
Strontium chromate (SrCrO4) crystals serve as corrosion inhibitors in aircraft primers. As a metal chromate, it is 'other' under HTS 2841.50.91.00.
Lead Chromate(VI) Basic Salt
Basic lead chromate is a chromate salt used in industrial pigments. HTS 2841.50.91.00 for other chromates.