# HS code 2920.90: Esters of other inorganic acids of non-metals (excluding esters of hydrogen halides) and their salts; their halogenated, sulphonated, nitrated or nitrosated derivatives > HS code 2920.90 covers esters of other inorganic acids of non-metals (excluding esters of hydrogen halides) and their salts; their halogenated, sulphonated, nitrated or nitrosated derivatives, other than those classified in 2920.11, 2920.19, 2920.21, 2920.22, 2920.23, 2920.24, 2920.29 and 2920.30. It sits in heading 29.20 (esters of other inorganic acids of non-metals (excluding esters of hydrogen halides) and their salts; their halogenated, sulphonated, nitrated or nitrosated derivatives) in chapter 29 (organic chemicals). Other goods of heading 29.20 are classified under 2920.11 (thiophosphoric esters (phosphorothioates) and their salts; their halogenated, sulphonated, nitrated or nitrosated derivatives, parathion (ISO) and parathion-methyl (ISO) (methyl-parathion)), 2920.19 (thiophosphoric esters (phosphorothioates) and their salts; their halogenated, sulphonated, nitrated or nitrosated derivatives, other), 2920.21 (phosphite esters and their salts; their halogenated, sulphonated, nitrated or nitrosated derivatives, dimethyl phosphite), 2920.22 (phosphite esters and their salts; their halogenated, sulphonated, nitrated or nitrosated derivatives, diethyl phosphite) or 4 others. National tariff lines under 2920.90 are live on border.bot for the United States (4 lines, also used by 1 other country). Source: https://border.bot/hs-codes/292090 Last updated: 11 October 2026 [HS codes](https://border.bot/hs-codes) / [Chapter 29](https://border.bot/hs-codes/29) / [29.20](https://border.bot/hs-codes/2920) / [2920.90](https://border.bot/hs-codes/292090) ## Key facts - HS code: 2920.90 - Covers: Esters of other inorganic acids of non-metals (excluding esters of hydrogen halides) and their salts; their halogenated, sulphonated, nitrated or nitrosated derivatives - Heading: [29.20: Esters of other inorganic acids of non-metals (excluding esters of hydrogen halides) and their salts; their halogenated, sulphonated, nitrated or nitrosated derivatives](https://border.bot/hs-codes/2920) - Chapter: [29: Organic chemicals](https://border.bot/hs-codes/29) - Edition: HS2022 - Duty in the United States: [See its 4 lines](https://border.bot/countries/united-states/hs-codes/292090) ## What this code covers HS code 2920.90 covers esters of other inorganic acids of non-metals (excluding esters of hydrogen halides) and their salts; their halogenated, sulphonated, nitrated or nitrosated derivatives, other than those classified in 2920.11, 2920.19, 2920.21, 2920.22, 2920.23, 2920.24, 2920.29 and 2920.30. The legal text of the subheading is “Other”, in HS2022. ## What it doesn’t cover Other goods of heading 29.20 are classified under 2920.11 (thiophosphoric esters (phosphorothioates) and their salts; their halogenated, sulphonated, nitrated or nitrosated derivatives, parathion (ISO) and parathion-methyl (ISO) (methyl-parathion)), 2920.19 (thiophosphoric esters (phosphorothioates) and their salts; their halogenated, sulphonated, nitrated or nitrosated derivatives, other), 2920.21 (phosphite esters and their salts; their halogenated, sulphonated, nitrated or nitrosated derivatives, dimethyl phosphite), 2920.22 (phosphite esters and their salts; their halogenated, sulphonated, nitrated or nitrosated derivatives, diethyl phosphite) or 4 others. - [2920.11](https://border.bot/hs-codes/292011) Thiophosphoric esters (phosphorothioates) and their salts; their halogenated, sulphonated, nitrated or nitrosated derivatives: Parathion (ISO) and parathion-methyl (ISO) (methyl-parathion) - [2920.19](https://border.bot/hs-codes/292019) Thiophosphoric esters (phosphorothioates) and their salts; their halogenated, sulphonated, nitrated or nitrosated derivatives: Other - [2920.21](https://border.bot/hs-codes/292021) Phosphite esters and their salts; their halogenated, sulphonated, nitrated or nitrosated derivatives: Dimethyl phosphite - [2920.22](https://border.bot/hs-codes/292022) Phosphite esters and their salts; their halogenated, sulphonated, nitrated or nitrosated derivatives: Diethyl phosphite - [2920.23](https://border.bot/hs-codes/292023) Phosphite esters and their salts; their halogenated, sulphonated, nitrated or nitrosated derivatives: Trimethyl phosphite - [2920.24](https://border.bot/hs-codes/292024) Phosphite esters and their salts; their halogenated, sulphonated, nitrated or nitrosated derivatives: Triethyl phosphite - [2920.29](https://border.bot/hs-codes/292029) Phosphite esters and their salts; their halogenated, sulphonated, nitrated or nitrosated derivatives: Other - [2920.30](https://border.bot/hs-codes/292030) Endosulfan (ISO) ## How it is structured 2920.90 is a six-digit subheading. Its first two digits, 29, are the chapter; the first four, 2920, are heading 29.20; the last two, 90, identify the subheading within the heading. Countries add their own digits after these six for their national tariff lines. - Chapter 29: Organic chemicals - Heading 29.20: Esters of other inorganic acids of non-metals (excluding esters of hydrogen halides) and their salts; their halogenated, sulphonated, nitrated or nitrosated derivatives - Subheading 2920.90: Other ## In other countries National tariff lines under 2920.90 are live on border.bot for the United States (4 lines, also used by 1 other country). - [United States](https://border.bot/countries/united-states/hs-codes/292090): 4 lines, used by 1 other country - Previous subheading: [2920.30](https://border.bot/hs-codes/292030) Endosulfan (ISO) - Next subheading: [2921.11](https://border.bot/hs-codes/292111) Acyclic monoamines and their derivatives; salts thereof: Methylamine, di- or trimethylamine and their salts ## Frequently asked questions ### What does HS code 2920.90 cover? HS code 2920.90 covers esters of other inorganic acids of non-metals (excluding esters of hydrogen halides) and their salts; their halogenated, sulphonated, nitrated or nitrosated derivatives, other than those classified in 2920.11, 2920.19, 2920.21, 2920.22, 2920.23, 2920.24, 2920.29 and 2920.30. ### Which heading and chapter is HS code 2920.90 in? HS code 2920.90 is in heading 29.20 (esters of other inorganic acids of non-metals (excluding esters of hydrogen halides) and their salts; their halogenated, sulphonated, nitrated or nitrosated derivatives) in chapter 29 (organic chemicals). ### Where are goods of heading 29.20 classified when 2920.90 doesn’t fit? Other goods of heading 29.20 are classified under 2920.11 (thiophosphoric esters (phosphorothioates) and their salts; their halogenated, sulphonated, nitrated or nitrosated derivatives, parathion (ISO) and parathion-methyl (ISO) (methyl-parathion)), 2920.19 (thiophosphoric esters (phosphorothioates) and their salts; their halogenated, sulphonated, nitrated or nitrosated derivatives, other), 2920.21 (phosphite esters and their salts; their halogenated, sulphonated, nitrated or nitrosated derivatives, dimethyl phosphite), 2920.22 (phosphite esters and their salts; their halogenated, sulphonated, nitrated or nitrosated derivatives, diethyl phosphite) or 4 others. ### Which countries’ tariffs list national lines under HS code 2920.90? National tariff lines under 2920.90 are live on border.bot for the United States (4 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/292090.json