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.
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If containing vanadium or other impurities exceeding 1%
Impure chromates may classify as vanadates of metals or other complex salts under heading 2829.
If supplied as a formulated solution for retail or industrial mixtures
Prepared chemical mixtures or preparations not chemically defined fall under heading 3824.
If processed into a complex salt with organic stabilizers
Complex salts with organic substances are excluded from Chapter 28 per chapter notes and go to 2833.
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Import Tips & Compliance
• Verify chemical purity and provide Certificate of Analysis (CoA) to confirm classification as chemically defined chromate salt per Chapter 28 notes
• Comply with EPA TSCA regulations and REACH-like import notifications due to chromium VI toxicity; include safety data sheets
• Avoid misclassification as a mixture by ensuring >99% purity; common pitfall is bulk shipments labeled without exact composition
Related Products under HTS 2841.50.91.00
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.
Magnesium Chromate Flakes
Magnesium chromate flakes for chemical synthesis, classified as other chromates HTS 2841.50.91.00.