HS Code for Potassium sulfate fertilizer
Potassium sulfate, when intended for use as a fertilizer, is classified under HS code 3104.30. Chapter 31 of the Harmonized Tariff Schedule is reserved for fertilizers, which are substances used to provide essential nutrients to plants. Heading 3104 specifically addresses mineral or chemical potassic fertilizers. Within this heading, subheading 3104.30 is dedicated to potassium sulphate (also known as sulphate of potash or SOP). This classification applies to the product regardless of its purity, provided it is intended for agricultural use. Potassium sulfate is a non-flammable white crystalline salt that is soluble in water. It is highly valued in agriculture for crops that are sensitive to chloride, such as tobacco, grapes, and various fruits and vegetables. The classification follows GRI 1, as the heading and subheading text specifically name the substance. According to the Legal Notes to Chapter 31, potassium sulfate is one of the few products that remains in this chapter even if it is a separate chemically defined compound, which is an exception to the general rule that pure chemicals belong in Chapter 28. This ensures that the agricultural industry has a consistent classification for its primary nutrient sources.
Products Included
- Agricultural grade potassium sulfate
- Sulphate of Potash (SOP)
- Potassium sulfate in tablets or similar forms (if weighing more than 10kg)
- Crystalline potassium sulfate for fertigation
- Granular potassium sulfate for soil application
Common Misclassification
A common misclassification occurs with HS code 2833.29, which covers other sulfates. While 2833.29 is for general chemical sulfates, Note 1 to Chapter 31 specifically includes potassium sulfate in 3104.30 regardless of its purity. Another error is using 3105.20, which is for fertilizers containing nitrogen, phosphorus, and potassium (NPK). If the product is pure potassium sulfate without other added nutrients, it must stay in 3104.30.
FAQ
What is the HS code for potassium sulfate fertilizer?
The HS code for potassium sulfate fertilizer is 3104.30, specifically for mineral or chemical potassic fertilizers.
Can potassium sulfate be classified in Chapter 28?
Generally, no. Even if it is chemically pure, Chapter 31 Note 1(c) directs potassium sulfate to heading 3104.
Industry
Frequently Asked Questions
What is the HS code for Potassium sulfate fertilizer?
The HS code for Potassium sulfate fertilizer is 310430 (Fertilizers, mineral or chemical; potassic, potassium sulphate).
How do I classify Potassium sulfate fertilizer for customs?
Potassium sulfate fertilizer is classified under HS code 310430 — Fertilizers, mineral or chemical; potassic, potassium sulphate. This is a 6-digit subheading level code.
Is the HS code for Potassium sulfate fertilizer the same in all countries?
The base HS code 310430 for Potassium sulfate fertilizer is internationally standardized for the first 6 digits across 200+ countries. Individual countries may add additional digits for national tariff lines and specific classifications.