HS code 2920.21: Phosphite esters and their salts; their halogenated, sulphonated, nitrated or nitrosated derivatives, dimethyl phosphite
Last updated
Key facts
- HS code
- 2920.21
- Covers
- Phosphite esters and their salts; their halogenated, sulphonated, nitrated or nitrosated derivatives, dimethyl phosphite
- Chapter
- 29: Organic chemicals
- Edition
- HS2022
- Duty in the United States
- See its 1 line
Summary
HS code 2920.21 covers phosphite esters and their salts; their halogenated, sulphonated, nitrated or nitrosated derivatives, dimethyl phosphite. 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), 2920.22 (phosphite esters and their salts; their halogenated, sulphonated, nitrated or nitrosated derivatives, diethyl phosphite), 2920.23 (phosphite esters and their salts; their halogenated, sulphonated, nitrated or nitrosated derivatives, trimethyl phosphite) or 4 others. National tariff lines under 2920.21 are live on border.bot for the United States (1 line, also used by 1 other country).
What this code covers
HS code 2920.21 covers phosphite esters and their salts; their halogenated, sulphonated, nitrated or nitrosated derivatives, dimethyl phosphite.
The legal text of the subheading is “Phosphite esters and their salts; their halogenated, sulphonated, nitrated or nitrosated derivatives: Dimethyl phosphite”, read under “Phosphite esters and their salts; their halogenated, sulphonated, nitrated or nitrosated derivatives”, 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), 2920.22 (phosphite esters and their salts; their halogenated, sulphonated, nitrated or nitrosated derivatives, diethyl phosphite), 2920.23 (phosphite esters and their salts; their halogenated, sulphonated, nitrated or nitrosated derivatives, trimethyl phosphite) or 4 others.
- 2920.11Thiophosphoric esters (phosphorothioates) and their salts; their halogenated, sulphonated, nitrated or nitrosated derivatives: Parathion (ISO) and parathion-methyl (ISO) (methyl-parathion)
- 2920.19Thiophosphoric esters (phosphorothioates) and their salts; their halogenated, sulphonated, nitrated or nitrosated derivatives: Other
- 2920.22Phosphite esters and their salts; their halogenated, sulphonated, nitrated or nitrosated derivatives: Diethyl phosphite
- 2920.23Phosphite esters and their salts; their halogenated, sulphonated, nitrated or nitrosated derivatives: Trimethyl phosphite
- 2920.24Phosphite esters and their salts; their halogenated, sulphonated, nitrated or nitrosated derivatives: Triethyl phosphite
- 2920.29Phosphite esters and their salts; their halogenated, sulphonated, nitrated or nitrosated derivatives: Other
- 2920.30Endosulfan (ISO)
- 2920.90Other
How it is structured
2920.21 is a six-digit subheading. Its first two digits, 29, are the chapter; the first four, 2920, are heading 29.20; the last two, 21, identify the subheading within the heading.
Countries add their own digits after these six for their national tariff lines.
- Chapter 29
- Organic chemicals
- Within the heading
- Phosphite esters and their salts; their halogenated, sulphonated, nitrated or nitrosated derivatives
- Subheading 2920.21
- Dimethyl phosphite
In other countries
National tariff lines under 2920.21 are live on border.bot for the United States (1 line, also used by 1 other country).
- United States1 line, used by 1 other country
Frequently asked questions
What does HS code 2920.21 cover?
HS code 2920.21 covers phosphite esters and their salts; their halogenated, sulphonated, nitrated or nitrosated derivatives, dimethyl phosphite.
Which heading and chapter is HS code 2920.21 in?
HS code 2920.21 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 2920.21 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), 2920.22 (phosphite esters and their salts; their halogenated, sulphonated, nitrated or nitrosated derivatives, diethyl phosphite), 2920.23 (phosphite esters and their salts; their halogenated, sulphonated, nitrated or nitrosated derivatives, trimethyl phosphite) or 4 others.
Which countries’ tariffs list national lines under HS code 2920.21?
National tariff lines under 2920.21 are live on border.bot for the United States (1 line, 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.