HS Code for Potassium dichromate

Potassium dichromate (K2Cr2O7) is classified under HS code 2841.50, which encompasses chromates, dichromates, and peroxochromates. As an inorganic salt of dichromic acid, it falls under Chapter 28 (Inorganic chemicals; organic or inorganic compounds of precious metals, of rare-earth metals, of radioactive elements or of isotopes). Heading 2841 is designated for salts of oxometallic or peroxometallic acids. Since potassium dichromate is a specific salt of a metallic acid (chromic/dichromic), it is categorized here. It is a crystalline ionic solid with a bright, red-orange color, primarily used as an oxidizing agent in various laboratory and industrial applications. The classification is based on the chemical structure where the chromium is in the +6 oxidation state. This substance is highly regulated due to its carcinogenic and oxidizing properties, but its HS classification remains strictly tied to its chemical identity as a dichromate salt of potassium.

Products Included

• Technical grade potassium dichromate for industrial tanning and dyeing.
• Reagent grade potassium dichromate for analytical chemistry and titrations.
• Potassium dichromate crystals used in the manufacture of safety matches.
• Aqueous solutions of potassium dichromate used as cleaning agents for glassware.
• Potassium dichromate used as a corrosion inhibitor in metal treatment.

Common Misclassification

Potassium dichromate is often misclassified with sodium dichromate, which falls under HS code 2841.30. While they share similar properties, the cation (potassium vs. sodium) determines the specific subheading. It is also sometimes confused with chromic acid (chromium trioxide), which is classified under 2819.10. Furthermore, if potassium dichromate is prepared as a pigment for paints, it might be incorrectly classified under 3206.20 (pigments and preparations based on chromium compounds). However, if it is the pure chemical salt, 2841.50 is the correct designation. It should also not be confused with potassium chromate (K2CrO4), though both are often found in the same 2841.50 subheading depending on the specific national tariff schedule.

FAQ

What is the HS code for potassium dichromate?

The HS code for potassium dichromate is 2841.50, which covers chromates, dichromates, and peroxochromates.

Why is potassium dichromate regulated in international trade?

Potassium dichromate is a hexavalent chromium compound, which is highly toxic, corrosive, and a known carcinogen. It is also a strong oxidizer that can intensify fires, requiring specific hazardous material handling and documentation during transport.