HS Code for Inorganic tanning agent

HS code 3202.90 is designated for inorganic tanning substances and preparations used in the leather industry. Tanning is the process of treating skins and hides of animals to produce leather, which is more durable and less susceptible to decomposition. While 3202.10 covers synthetic organic tanning substances, 3202.90 captures the inorganic counterparts and enzymatic preparations used for pre-tanning. The most common inorganic tanning agents are based on mineral salts, particularly chromium, aluminum, and zirconium. These substances work by cross-linking the collagen fibers in the hide, a process known as mineral tanning. The classification includes complex mixtures designed specifically for the tanning process, even if they contain natural tanning materials, provided the inorganic component is the primary active agent or the preparation is intended for pre-tanning. Enzymatic preparations included here are those used to remove hair or to bate the skins before the actual tanning begins. It is important to distinguish these from pure chemicals of Chapter 28; for a mineral salt to be classified in 32.02, it must be prepared for tanning, often by adding buffers or other additives that facilitate the tanning reaction. This ensures the product is ready for industrial use in tanneries rather than being a general-purpose chemical reagent.

Products Included

• Basic chromium sulfate prepared for tanning
• Aluminum-based tanning salts
• Zirconium tanning preparations
• Enzymatic pre-tanning preparations
• Mineral tanning mixtures containing synthetic organic agents

Common Misclassification

This code is often confused with HS code 3201, which covers vegetable tanning extracts like quebracho or wattle. It is also frequently misclassified under 2833.29 (Chromium sulfates) when the product is a pure chemical salt not yet prepared or formulated specifically for the tanning industry.

FAQ

What is the HS code for inorganic tanning agent?

The correct HS code for inorganic tanning substances and preparations is 3202.90.

Are enzymes included in this classification?

Yes, enzymatic preparations intended for pre-tanning, such as those used in the dehairing or bating process, are classified under 3202.90.