# HS code 2933.61: Compounds containing an unfused triazine ring (whether or not hydrogenated) in the structure, melamine > HS code 2933.61 covers compounds containing an unfused triazine ring (whether or not hydrogenated) in the structure, melamine. It sits in heading 29.33 (heterocyclic compounds with nitrogen hetero-atom(s) only) in chapter 29 (organic chemicals). Other goods of heading 29.33 are classified under 2933.11 (compounds containing an unfused pyrazole ring (whether or not hydrogenated) in the structure, phenazone (antipyrin) and its derivatives), 2933.19 (compounds containing an unfused pyrazole ring (whether or not hydrogenated) in the structure, other), 2933.21 (compounds containing an unfused imidazole ring (whether or not hydrogenated) in the structure, hydantoin and its derivatives), 2933.29 (compounds containing an unfused imidazole ring (whether or not hydrogenated) in the structure, other) or 22 others. Source: https://staging.border.bot/hs-codes/293361 Last updated: 13 October 2026 [HS codes](https://staging.border.bot/hs-codes) / [Chapter 29](https://staging.border.bot/hs-codes/29) / [29.33](https://staging.border.bot/hs-codes/2933) / [2933.61](https://staging.border.bot/hs-codes/293361) ## Key facts - HS code: 2933.61 - Covers: Compounds containing an unfused triazine ring (whether or not hydrogenated) in the structure, melamine - Heading: [29.33: Heterocyclic compounds with nitrogen hetero-atom(s) only](https://staging.border.bot/hs-codes/2933) - Chapter: [29: Organic chemicals](https://staging.border.bot/hs-codes/29) - Edition: HS2022 - Duty rates: [Set by each country’s tariff](https://staging.border.bot/countries) ## What this code covers HS code 2933.61 covers compounds containing an unfused triazine ring (whether or not hydrogenated) in the structure, melamine. The legal text of the subheading is “Compounds containing an unfused triazine ring (whether or not hydrogenated) in the structure: Melamine”, read under “Compounds containing an unfused triazine ring (whether or not hydrogenated) in the structure”, in HS2022. ## What it doesn’t cover Other goods of heading 29.33 are classified under 2933.11 (compounds containing an unfused pyrazole ring (whether or not hydrogenated) in the structure, phenazone (antipyrin) and its derivatives), 2933.19 (compounds containing an unfused pyrazole ring (whether or not hydrogenated) in the structure, other), 2933.21 (compounds containing an unfused imidazole ring (whether or not hydrogenated) in the structure, hydantoin and its derivatives), 2933.29 (compounds containing an unfused imidazole ring (whether or not hydrogenated) in the structure, other) or 22 others. - [2933.11](https://staging.border.bot/hs-codes/293311) Compounds containing an unfused pyrazole ring (whether or not hydrogenated) in the structure: Phenazone (antipyrin) and its derivatives - [2933.19](https://staging.border.bot/hs-codes/293319) Compounds containing an unfused pyrazole ring (whether or not hydrogenated) in the structure: Other - [2933.21](https://staging.border.bot/hs-codes/293321) Compounds containing an unfused imidazole ring (whether or not hydrogenated) in the structure: Hydantoin and its derivatives - [2933.29](https://staging.border.bot/hs-codes/293329) Compounds containing an unfused imidazole ring (whether or not hydrogenated) in the structure: Other - [2933.31](https://staging.border.bot/hs-codes/293331) Compounds containing an unfused pyridine ring (whether or not hydrogenated) in the structure: Pyridine and its salts - [2933.32](https://staging.border.bot/hs-codes/293332) Compounds containing an unfused pyridine ring (whether or not hydrogenated) in the structure: Piperidine and its salts - [2933.33](https://staging.border.bot/hs-codes/293333) Compounds containing an unfused pyridine ring (whether or not hydrogenated) in the structure: Alfentanil (INN), anileridine (INN), bezitramide (INN), bromazepam (INN), carfentanil (INN), difenoxin (INN), diphenoxylate (INN), dipipanone (INN), fentanyl (INN), ketobemidone (INN), methylphenidate (INN), pentazocine (INN), pethidine (INN), pethidine (INN) intermediate A, phencyclidine (INN) (PCP), phenoperidine (INN), pipradrol (INN), piritramide (INN), propiram (INN), remifentanil (INN) and trimeperidine (INN); salts thereof - [2933.34](https://staging.border.bot/hs-codes/293334) Compounds containing an unfused pyridine ring (whether or not hydrogenated) in the structure: Other fentanyls and their derivatives - [2933.35](https://staging.border.bot/hs-codes/293335) Compounds containing an unfused pyridine ring (whether or not hydrogenated) in the structure: 3-Quinuclidinol - [2933.36](https://staging.border.bot/hs-codes/293336) Compounds containing an unfused pyridine ring (whether or not hydrogenated) in the structure: 4-Anilino-N-phenethylpiperidine (ANPP) - [2933.37](https://staging.border.bot/hs-codes/293337) Compounds containing an unfused pyridine ring (whether or not hydrogenated) in the structure: N-Phenethyl-4-piperidone (NPP) - [2933.39](https://staging.border.bot/hs-codes/293339) Compounds containing an unfused pyridine ring (whether or not hydrogenated) in the structure: Other - [2933.41](https://staging.border.bot/hs-codes/293341) Compounds containing in the structure a quinoline or isoquinoline ring-system (whether or not hydrogenated), not further fused: Levorphanol (INN) and its salts - [2933.49](https://staging.border.bot/hs-codes/293349) Compounds containing in the structure a quinoline or isoquinoline ring-system (whether or not hydrogenated), not further fused: Other - [2933.52](https://staging.border.bot/hs-codes/293352) Compounds containing a pyrimidine ring (whether or not hydrogenated) or piperazine ring in the structure: Malonylurea (barbituric acid) and its salts - [2933.53](https://staging.border.bot/hs-codes/293353) Compounds containing a pyrimidine ring (whether or not hydrogenated) or piperazine ring in the structure: Allobarbital (INN), amobarbital (INN), barbital (INN), butalbital (INN), butobarbital, cyclobarbital (INN), methylphenobarbital (INN), pentobarbital (INN), phenobarbital (INN), secbutabarbital (INN), secobarbital (INN) and vinylbital (INN); salts thereof - [2933.54](https://staging.border.bot/hs-codes/293354) Compounds containing a pyrimidine ring (whether or not hydrogenated) or piperazine ring in the structure: Other derivatives of malonylurea (barbituric acid); salts thereof - [2933.55](https://staging.border.bot/hs-codes/293355) Compounds containing a pyrimidine ring (whether or not hydrogenated) or piperazine ring in the structure: Loprazolam (INN), mecloqualone (INN), methaqualone (INN) and zipeprol (INN); salts thereof - [2933.59](https://staging.border.bot/hs-codes/293359) Compounds containing a pyrimidine ring (whether or not hydrogenated) or piperazine ring in the structure: Other - [2933.69](https://staging.border.bot/hs-codes/293369) Compounds containing an unfused triazine ring (whether or not hydrogenated) in the structure: Other - [2933.71](https://staging.border.bot/hs-codes/293371) Lactams: 6-Hexanelactam (epsilon-caprolactam) - [2933.72](https://staging.border.bot/hs-codes/293372) Lactams: Clobazam (INN) and methyprylon (INN) - [2933.79](https://staging.border.bot/hs-codes/293379) Lactams: Other lactams - [2933.91](https://staging.border.bot/hs-codes/293391) Other: Alprazolam (INN), camazepam (INN), chlordiazepoxide (INN), clonazepam (INN), clorazepate, delorazepam (INN), diazepam (INN), estazolam (INN), ethyl loflazepate (INN), fludiazepam (INN), flunitrazepam (INN), flurazepam (INN), halazepam (INN), lorazepam (INN), lormetazepam (INN), mazindol (INN), medazepam (INN), midazolam (INN), nimetazepam (INN), nitrazepam (INN), nordazepam (INN), oxazepam (INN), pinazepam (INN), prazepam (INN), pyrovalerone (INN), temazepam (INN), tetrazepam (INN) and triazolam (INN); salts thereof - [2933.92](https://staging.border.bot/hs-codes/293392) Other: Azinphos-methyl (ISO) - [2933.99](https://staging.border.bot/hs-codes/293399) Other: Other ## How it is structured 2933.61 is a six-digit subheading. Its first two digits, 29, are the chapter; the first four, 2933, are heading 29.33; the last two, 61, identify the subheading within the heading. Countries add their own digits after these six for their national tariff lines. - Chapter 29: Organic chemicals - Heading 29.33: Heterocyclic compounds with nitrogen hetero-atom(s) only - Within the heading: Compounds containing an unfused triazine ring (whether or not hydrogenated) in the structure - Subheading 2933.61: Melamine ## In other countries No national tariff lines under 2933.61 are live on border.bot yet. Tariffs built on the Harmonized System (HS2022) use 2933.61 at six digits and add their own digits after it. - Previous subheading: [2933.59](https://staging.border.bot/hs-codes/293359) Compounds containing a pyrimidine ring (whether or not hydrogenated) or piperazine ring in the structure: Other - Next subheading: [2933.69](https://staging.border.bot/hs-codes/293369) Compounds containing an unfused triazine ring (whether or not hydrogenated) in the structure: Other ## Frequently asked questions ### What does HS code 2933.61 cover? HS code 2933.61 covers compounds containing an unfused triazine ring (whether or not hydrogenated) in the structure, melamine. ### Which heading and chapter is HS code 2933.61 in? HS code 2933.61 is in heading 29.33 (heterocyclic compounds with nitrogen hetero-atom(s) only) in chapter 29 (organic chemicals). ### Where are goods of heading 29.33 classified when 2933.61 doesn’t fit? Other goods of heading 29.33 are classified under 2933.11 (compounds containing an unfused pyrazole ring (whether or not hydrogenated) in the structure, phenazone (antipyrin) and its derivatives), 2933.19 (compounds containing an unfused pyrazole ring (whether or not hydrogenated) in the structure, other), 2933.21 (compounds containing an unfused imidazole ring (whether or not hydrogenated) in the structure, hydantoin and its derivatives), 2933.29 (compounds containing an unfused imidazole ring (whether or not hydrogenated) in the structure, other) or 22 others. ## Sources and updates The Harmonized System legal text comes from border.bot release 1 (edition HS 2022), imported from a file, and has been live since 13 October 2026. This page was last updated on 13 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://staging.border.bot/hs-codes/293361.json