Product Classification Guide

HS Code for Nitrogen fertilizer (ammonium sulfate)

3102.21 Fertilizers, mineral or chemical; nitrogenous, ammonium sulphate
Chemicals
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Ammonium sulfate fertilizer is classified under HS code 3102.21. This product is a nitrogenous mineral or chemical fertilizer. Within heading 3102, which covers nitrogenous fertilizers, subheading 3102.21 is specifically allocated to ammonium sulphate. This chemical compound is widely used in agriculture to provide both nitrogen and sulfur to crops. The classification is straightforward for pure ammonium sulfate intended for agricultural use. It is important to note that even if the product is of high purity (technical grade), if it is presented in a form or packaging for use as a fertilizer, it remains in Chapter 31. The Harmonized System prioritizes the chemical identity of the nitrogen source in this instance, distinguishing it from other nitrogenous compounds like urea or ammonium nitrate. This classification ensures that the specific nutrient profile of the fertilizer is recognized for both trade statistics and regulatory compliance.

Products Included

  • Crystalline ammonium sulfate fertilizer
  • Granular ammonium sulfate for soil application
  • Ammonium sulfate used as a source of nitrogen and sulfur

Common Misclassification

Ammonium sulfate (3102.21) can be confused with 3102.29, which covers other double salts and mixtures of ammonium sulfate and ammonium nitrate. Another common error is attempting to classify it under 2833.29, which is the general code for sulfates of other metals. However, Note 2 to Chapter 31 clarifies that heading 3102 applies to ammonium sulfate even if it is chemically pure, provided it is used as a fertilizer. Additionally, if the ammonium sulfate is mixed with other primary nutrients like potassium, it must be classified under heading 3105 as a compound fertilizer.

FAQ

What is the HS code for Nitrogen fertilizer (ammonium sulfate)?

The specific HS code for ammonium sulfate used as a nitrogenous fertilizer is 3102.21.

Can ammonium sulfate be classified in Chapter 28?

Generally, no; if it is intended for use as a fertilizer, Chapter 31 (specifically 3102.21) takes precedence over the chemical headings in Chapter 28.

Industry

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Frequently Asked Questions

What is the HS code for Nitrogen fertilizer (ammonium sulfate)?

The HS code for Nitrogen fertilizer (ammonium sulfate) is 310221 (Fertilizers, mineral or chemical; nitrogenous, ammonium sulphate).

How do I classify Nitrogen fertilizer (ammonium sulfate) for customs?

Nitrogen fertilizer (ammonium sulfate) is classified under HS code 310221 — Fertilizers, mineral or chemical; nitrogenous, ammonium sulphate. This is a 6-digit subheading level code.

Is the HS code for Nitrogen fertilizer (ammonium sulfate) the same in all countries?

The base HS code 310221 for Nitrogen fertilizer (ammonium sulfate) is internationally standardized for the first 6 digits across 200+ countries. Individual countries may add additional digits for national tariff lines and specific classifications.