# HS heading 31.02: Mineral or chemical fertilisers, nitrogenous > HS heading 31.02 covers mineral or chemical fertilisers, nitrogenous. It is in chapter 31 (fertilisers). It is split into 9 subheadings: 3102.10 (urea, whether or not in aqueous solution), 3102.21 (ammonium sulphate; double salts and mixtures of ammonium sulphate and ammonium nitrate, ammonium sulphate), 3102.29 (ammonium sulphate; double salts and mixtures of ammonium sulphate and ammonium nitrate, other), 3102.30 (ammonium nitrate, whether or not in aqueous solution), 3102.40 (mixtures of ammonium nitrate with calcium carbonate or other inorganic non-fertilising substances), 3102.50 (sodium nitrate) and 3 others. National tariff lines under heading 31.02 are live on border.bot for the United States (11 lines, also used by 1 other country). Source: https://border.bot/hs-codes/3102 Last updated: 11 October 2026 [HS codes](https://border.bot/hs-codes) / [Chapter 31](https://border.bot/hs-codes/31) / [31.02](https://border.bot/hs-codes/3102) ## Key facts - Heading: 31.02 - Description: Mineral or chemical fertilisers, nitrogenous - Chapter: 31: Fertilisers - Subheadings: 9 - Edition: HS2022 ## What this code covers HS heading 31.02 covers mineral or chemical fertilisers, nitrogenous. It is split into 9 subheadings: 3102.10 (urea, whether or not in aqueous solution), 3102.21 (ammonium sulphate; double salts and mixtures of ammonium sulphate and ammonium nitrate, ammonium sulphate), 3102.29 (ammonium sulphate; double salts and mixtures of ammonium sulphate and ammonium nitrate, other), 3102.30 (ammonium nitrate, whether or not in aqueous solution), 3102.40 (mixtures of ammonium nitrate with calcium carbonate or other inorganic non-fertilising substances), 3102.50 (sodium nitrate) and 3 others. - [3102.10](https://border.bot/hs-codes/310210) Urea, whether or not in aqueous solution - [3102.21](https://border.bot/hs-codes/310221) Ammonium sulphate; double salts and mixtures of ammonium sulphate and ammonium nitrate: Ammonium sulphate - [3102.29](https://border.bot/hs-codes/310229) Ammonium sulphate; double salts and mixtures of ammonium sulphate and ammonium nitrate: Other - [3102.30](https://border.bot/hs-codes/310230) Ammonium nitrate, whether or not in aqueous solution - [3102.40](https://border.bot/hs-codes/310240) Mixtures of ammonium nitrate with calcium carbonate or other inorganic non-fertilising substances - [3102.50](https://border.bot/hs-codes/310250) Sodium nitrate - [3102.60](https://border.bot/hs-codes/310260) Double salts and mixtures of calcium nitrate and ammonium nitrate - [3102.80](https://border.bot/hs-codes/310280) Mixtures of urea and ammonium nitrate in aqueous or ammoniacal solution - [3102.90](https://border.bot/hs-codes/310290) Other, including mixtures not specified in the foregoing subheadings ## What it doesn’t cover Other goods of chapter 31 are classified in its other 4 headings, listed below. - [31.01](https://border.bot/hs-codes/3101) Animal or vegetable fertilisers, whether or not mixed together or chemically treated; fertilisers produced by the mixing or chemical treatment of animal or vegetable products - [31.03](https://border.bot/hs-codes/3103) Mineral or chemical fertilisers, phosphatic - [31.04](https://border.bot/hs-codes/3104) Mineral or chemical fertilisers, potassic - [31.05](https://border.bot/hs-codes/3105) Mineral or chemical fertilisers containing two or three of the fertilising elements nitrogen, phosphorus and potassium; other fertilisers; goods of this Chapter in tablets or similar forms or in packages of a gross weight not exceeding 10kg ## How it is structured Heading 31.02 is one of 5 headings in chapter 31. Its first two digits, 31, are the chapter; the next two, 02, number the heading within it. Its subheadings add two more digits (3102.10, 3102.21, 3102.29). ## In other countries National tariff lines under heading 31.02 are live on border.bot for the United States (11 lines, also used by 1 other country). - [United States](https://border.bot/countries/united-states/hs-codes/31): 11 lines, used by 1 other country - Previous heading: [31.01](https://border.bot/hs-codes/3101) Animal or vegetable fertilisers, whether or not mixed together or chemically treated; fertilisers produced by the mixing or chemical treatment of animal or vegetable products - Next heading: [31.03](https://border.bot/hs-codes/3103) Mineral or chemical fertilisers, phosphatic ## Frequently asked questions ### What does HS heading 31.02 cover? HS heading 31.02 covers mineral or chemical fertilisers, nitrogenous. ### Which chapter is HS heading 31.02 in? HS heading 31.02 is in chapter 31 (fertilisers). ### How many subheadings does HS heading 31.02 have? HS heading 31.02 has 9 subheadings: 3102.10 (urea, whether or not in aqueous solution), 3102.21 (ammonium sulphate; double salts and mixtures of ammonium sulphate and ammonium nitrate, ammonium sulphate), 3102.29 (ammonium sulphate; double salts and mixtures of ammonium sulphate and ammonium nitrate, other), 3102.30 (ammonium nitrate, whether or not in aqueous solution), 3102.40 (mixtures of ammonium nitrate with calcium carbonate or other inorganic non-fertilising substances), 3102.50 (sodium nitrate) and 3 others. ### Which countries’ tariffs list national lines under HS heading 31.02? National tariff lines under heading 31.02 are live on border.bot for the United States (11 lines, also used by 1 other country). ## Sources and updates The Harmonized System legal text comes from border.bot release 2 (edition HS 2022), imported from a file, and has been live since 11 October 2026. This page was last updated on 11 October 2026. Guidance from published tariff data, not a binding ruling. For a decision customs must follow, apply to the destination’s customs authority for a binding tariff ruling. Machine-readable: https://border.bot/hs-codes/3102.json