Product Classification Guide

HS Code for Mordant dye

3204.12 Dyes; acid, whether or not premetallised and preparations based thereon, mordant dyes and preparations based thereon
Chemicals
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Mordant dyes are classified under HS code 3204.12 because they represent a specific category of synthetic organic coloring matter that requires a fixing agent, known as a mordant, to adhere to the textile fiber. The Harmonized System organizes Chapter 32 to cover tanning or dyeing extracts, tannins, and their derivatives. Within this chapter, heading 3204 is dedicated to synthetic organic coloring matter. Subheading 3204.12 specifically groups acid dyes and mordant dyes together. This classification is based on the chemical application method where the dye forms a complex with a metallic salt (such as chromium, aluminum, or iron) already present on the fiber or added during the dyeing process. The classification remains consistent regardless of whether the dye is in a powder, granule, or liquid form, provided it is a preparation based on these specific synthetic organic compounds. The inclusion of mordant dyes in this code is justified by their chemical structure, which typically contains hydroxyl or carboxyl groups capable of chelating with metal ions to produce insoluble color lakes within the fiber structure.

Products Included

  • Alizarin and its synthetic derivatives
  • Chrome dyes used for wool and silk
  • Anthracene-based mordant dyes
  • Preparations based on mordant coloring matter
  • Synthetic organic dyes requiring metallic salts for fixation

Common Misclassification

Mordant dyes are frequently confused with disperse dyes classified under HS code 3204.11 or basic dyes under 3204.13. The primary distinction lies in the chemical mechanism of attachment; disperse dyes are non-ionic and used for synthetic fibers like polyester, while mordant dyes require a metal ion bridge. Additionally, if these dyes are put up in forms or packings for retail sale, they must be classified under HS code 3212.90 rather than 3204.12.

FAQ

What is the HS code for mordant dye?

The primary HS code for mordant dyes and preparations based on them is 3204.12.

Does this code include the mordant chemicals themselves?

No, the metallic salts used as mordants, such as potassium dichromate or aluminum sulfate, are classified in Chapter 28 as inorganic chemicals.

Industry

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Frequently Asked Questions

What is the HS code for Mordant dye?

The HS code for Mordant dye is 320412 (Dyes; acid, whether or not premetallised and preparations based thereon, mordant dyes and preparations based thereon).

How do I classify Mordant dye for customs?

Mordant dye is classified under HS code 320412 — Dyes; acid, whether or not premetallised and preparations based thereon, mordant dyes and preparations based thereon. This is a 6-digit subheading level code.

Is the HS code for Mordant dye the same in all countries?

The base HS code 320412 for Mordant dye is internationally standardized for the first 6 digits across 200+ countries. Individual countries may add additional digits for national tariff lines and specific classifications.