HS Code for Ammonium dichromate

Ammonium dichromate is classified under HS code 2841.50. This subheading covers chromates, dichromates, and peroxochromates that are not elsewhere specified within heading 2841. Heading 2841 is part of Chapter 28, which covers inorganic chemicals, and specifically addresses salts of oxometallic or peroxometallic acids. Ammonium dichromate, with the chemical formula (NH4)2Cr2O7, is an inorganic compound that appears as bright orange crystals. It is widely used in various industrial applications, including sensitizing emulsions in photography, lithography, and as a catalyst in chemical synthesis. The classification is based strictly on the chemical identity of the salt. Subheading 2841.50 serves as the primary category for chromium-based salts of this nature that do not have their own dedicated subheadings. Proper classification requires the product to be a separate chemically defined inorganic salt. If the ammonium dichromate were mixed with other substances for a specific functional use, such as a prepared pigment, it might be moved to Chapter 32. However, in its pure or technical grade form, it must be declared under 2841.50.

Products Included

• Pure ammonium dichromate
• Technical grade ammonium dichromate
• Ammonium bichromate
• Crystalline ammonium dichromate

Common Misclassification

Ammonium dichromate is often confused with sodium dichromate, which is classified under HS code 2841.30. It is also sometimes misclassified under 2819.10 (chromium trioxide) or 2819.90 (other chromium oxides and hydroxides). Another error involves 2841.61, which is for potassium permanganate, due to its similar use as an oxidizer. Importers must distinguish between the specific metal cation (ammonium vs sodium or potassium) to ensure correct coding.

FAQ

What is the HS code for Ammonium dichromate?

The correct HS code for ammonium dichromate is 2841.50.

Is ammonium dichromate classified as a hazardous material for customs?

While it is a hazardous oxidizer, its HS classification is based on its chemical composition (2841.50) rather than its safety characteristics, though safety data sheets are required for transport.