31.04 Fertilizers; mineral or chemical, potassic
One level above the number you declare. Pick one of the six-digit codes below.
Section VI, Chemical Products — inorganic and organic chemicals, pharmaceuticals, fertilisers, paints and cosmetics.
- 31 Chapter Fertilizers
- 04 Heading Fertilizers; mineral or chemical, potassic
- —— Subheading Pick one of the 3 six-digit codes below
Chapter 31 covers fertilizers: nitrogenous, phosphatic and potassic fertilizers, both mineral/chemical and animal or vegetable-based, plus mixed formulations. Classification generally follows the primary nutrient content (N, P, K) and whether the product is a single or mixed fertilizer. Classification tip: Single-nutrient versus mixed (compound) fertilizers sit on different subheadings, and the exact N-P-K ratio stated on the label is usually what customs checks against the declared code.
All of chapter 31The 3 six-digit codes under 31.04
One of these is the number you declare.
Other headings in chapter 31
The wording above is the Harmonized System nomenclature as published by the World Customs Organization, HS 2022 edition. It is a classification reference, not a tariff: it carries no duty rates, and it stops at six digits — the importing country adds its own beyond that.
Classification is decided by the General Rules of Interpretation and the section and chapter notes, and it is the importing country’s customs authority that makes it binding.
Shipping goods under 31.04? A customs hold shows up as a milestone that stops moving — follow the container or the air waybill from departure to delivery.
Track a shipment31.04 FAQ
Heading 31.04 covers fertilizers; mineral or chemical, potassic. It is part of chapter 31 (fertilizers), and it is subdivided into 3 six-digit subheadings — the level you actually declare.
Pick one of the 3 subheadings below. Those six digits are what customs recognises internationally; the importing country may extend them to eight or ten in its own tariff schedule.
The General Rules of Interpretation, read together with the notes to Section VI and to chapter 31. A description that reads right is not enough on its own — the notes routinely pull goods out of the chapter they obviously belong to and put them somewhere else. Where duty or licensing turns on the answer, ask the importing country’s customs authority for a binding ruling.
A wrong or missing code is one of the common reasons customs holds a container, and a hold shows up as a milestone that stops moving. Watch for it in the container tracking app, on the air waybill in the air cargo tracker, or through the tracking API.