# United States tariff lines under HS 2933.19

> The United States tariff splits HS 2933.19 (compounds containing an unfused pyrazole ring (whether or not hydrogenated) in the structure: Other) into 13 national lines: 2933.19.04.00 (aminomethylphenylpyrazole (Phenylmethylaminopyrazole); and 3-Methyl-1-(p-tolyl)-2-pyrazolin-5-one (p-Tolyl methyl pyrazolone)), 2933.19.08.00 (3-(5-Amino-3-methyl-1H-pyrazol-1-yl)- benzenesulfonic acid; Amino-J-pyrazolone; 3-Amino-1-(2,4,6-trichlorophenyl)-5- pyrazolone; 3-Carboxy-1,4-sulfophenylpyrazol-5-one; 4-Chloro-3-(3-methyl-5-oxo-2-pyrazolin-1- yl)benzenesulfonic acid; 1-(m-Chlorophenyl)-3-methyl-2-pyrazolin- 5-one;p-Chloropyrazolone; 1-(2',5'-Dichlorophenyl)-3-methyl-2- pyrazolin-5-one; 1-(o-Ethylphenyl)-3-methyl-2-pyrazolin- 5-one; 5-Imino-3-methyl-1-phenylpyrazole; 5-Imino-3-methyl-1-(m-sulfophenyl)- pyrazole; 2,4-Methylcarboxypyrazolic acid; Methylphenylpyrazolone; and Sulfinpyrazone), 2933.19.15.00 (1,2-Dimethyl-3,5-diphenyl-1H-pyrazolium methyl sulfate (Difenzoquat methyl sulfate)), 2933.19.18.00 (2-Chloro-5-sulfophenylmethylpyrazolone; 2,5-Dichloro-4-(3-methyl-5-oxo-2- pyrazolin-1-yl) benzenesulfonic acid; Phenyl carbethoxypyrazolone;m-Sulfaminopyrazolone (m-Sulfamido- phenyl methyl pyrazolone); and 1-(p-Sulfophenyl)-3-methyl pyrazolone) and 9 others.

Source: https://border.bot/countries/united-states/hs-codes/293319
Last updated: 9 October 2026

[Countries](https://border.bot/countries) / [United States](https://border.bot/countries/united-states) / [Chapter 29](https://border.bot/countries/united-states/hs-codes/29) / [2933.19](https://border.bot/countries/united-states/hs-codes/293319)

## Key facts

- HS subheading: [2933.19](https://border.bot/hs-codes/293319)
- National lines: 13
- Tariff: [United States](https://border.bot/countries/united-states)
- Chapter: 29: Organic chemicals

## United States lines under 2933.19

The United States tariff splits HS 2933.19 (compounds containing an unfused pyrazole ring (whether or not hydrogenated) in the structure: Other) into 13 national lines: 2933.19.04.00 (aminomethylphenylpyrazole (Phenylmethylaminopyrazole); and 3-Methyl-1-(p-tolyl)-2-pyrazolin-5-one (p-Tolyl methyl pyrazolone)), 2933.19.08.00 (3-(5-Amino-3-methyl-1H-pyrazol-1-yl)- benzenesulfonic acid; Amino-J-pyrazolone; 3-Amino-1-(2,4,6-trichlorophenyl)-5- pyrazolone; 3-Carboxy-1,4-sulfophenylpyrazol-5-one; 4-Chloro-3-(3-methyl-5-oxo-2-pyrazolin-1- yl)benzenesulfonic acid; 1-(m-Chlorophenyl)-3-methyl-2-pyrazolin- 5-one;p-Chloropyrazolone; 1-(2',5'-Dichlorophenyl)-3-methyl-2- pyrazolin-5-one; 1-(o-Ethylphenyl)-3-methyl-2-pyrazolin- 5-one; 5-Imino-3-methyl-1-phenylpyrazole; 5-Imino-3-methyl-1-(m-sulfophenyl)- pyrazole; 2,4-Methylcarboxypyrazolic acid; Methylphenylpyrazolone; and Sulfinpyrazone), 2933.19.15.00 (1,2-Dimethyl-3,5-diphenyl-1H-pyrazolium methyl sulfate (Difenzoquat methyl sulfate)), 2933.19.18.00 (2-Chloro-5-sulfophenylmethylpyrazolone; 2,5-Dichloro-4-(3-methyl-5-oxo-2- pyrazolin-1-yl) benzenesulfonic acid; Phenyl carbethoxypyrazolone;m-Sulfaminopyrazolone (m-Sulfamido- phenyl methyl pyrazolone); and 1-(p-Sulfophenyl)-3-methyl pyrazolone) and 9 others.

- [2933.19.04.00](https://border.bot/countries/united-states/hs-codes/2933190400) Compounds containing an unfused pyrazole ring (whether or not hydrogenated) in the structure, Other, Aromatic or modified aromatic, Aminomethylphenylpyrazole (Phenylmethylaminopyrazole); and 3-Methyl-1-(p-tolyl)-2-pyrazolin-5-one (p-Tolyl methyl pyrazolone). Duty (MFN): free
- [2933.19.08.00](https://border.bot/countries/united-states/hs-codes/2933190800) Compounds containing an unfused pyrazole ring (whether or not hydrogenated) in the structure, Other, Aromatic or modified aromatic, 3-(5-Amino-3-methyl-1H-pyrazol-1-yl)- benzenesulfonic acid; Amino-J-pyrazolone; 3-Amino-1-(2,4,6-trichlorophenyl)-5- pyrazolone; 3-Carboxy-1,4-sulfophenylpyrazol-5-one; 4-Chloro-3-(3-methyl-5-oxo-2-pyrazolin-1- yl)benzenesulfonic acid; 1-(m-Chlorophenyl)-3-methyl-2-pyrazolin- 5-one;p-Chloropyrazolone; 1-(2',5'-Dichlorophenyl)-3-methyl-2- pyrazolin-5-one; 1-(o-Ethylphenyl)-3-methyl-2-pyrazolin- 5-one; 5-Imino-3-methyl-1-phenylpyrazole; 5-Imino-3-methyl-1-(m-sulfophenyl)- pyrazole; 2,4-Methylcarboxypyrazolic acid; Methylphenylpyrazolone; and Sulfinpyrazone. Duty (MFN): 5.8%
- [2933.19.15.00](https://border.bot/countries/united-states/hs-codes/2933191500) Compounds containing an unfused pyrazole ring (whether or not hydrogenated) in the structure, Other, Aromatic or modified aromatic, 1,2-Dimethyl-3,5-diphenyl-1H-pyrazolium methyl sulfate (Difenzoquat methyl sulfate). Duty (MFN): free
- [2933.19.18.00](https://border.bot/countries/united-states/hs-codes/2933191800) Compounds containing an unfused pyrazole ring (whether or not hydrogenated) in the structure, Other, Aromatic or modified aromatic, 2-Chloro-5-sulfophenylmethylpyrazolone; 2,5-Dichloro-4-(3-methyl-5-oxo-2- pyrazolin-1-yl) benzenesulfonic acid; Phenyl carbethoxypyrazolone;m-Sulfaminopyrazolone (m-Sulfamido- phenyl methyl pyrazolone); and 1-(p-Sulfophenyl)-3-methyl pyrazolone. Duty (MFN): free
- [2933.19.23.00](https://border.bot/countries/united-states/hs-codes/2933192300) Compounds containing an unfused pyrazole ring (whether or not hydrogenated) in the structure, Other, Aromatic or modified aromatic, Other, Pesticides. Duty (MFN): 6.5%
- [2933.19.30.10](https://border.bot/countries/united-states/hs-codes/2933193010) Compounds containing an unfused pyrazole ring (whether or not hydrogenated) in the structure, Other, Aromatic or modified aromatic, Other, Photographic chemicals, Couplers, for use in color negative photographic paper. Duty (MFN): 6.5%
- [2933.19.30.95](https://border.bot/countries/united-states/hs-codes/2933193095) Compounds containing an unfused pyrazole ring (whether or not hydrogenated) in the structure, Other, Aromatic or modified aromatic, Other, Photographic chemicals, Other. Duty (MFN): 6.5%
- [2933.19.35.00](https://border.bot/countries/united-states/hs-codes/2933193500) Compounds containing an unfused pyrazole ring (whether or not hydrogenated) in the structure, Other, Aromatic or modified aromatic, Other, Drugs. Duty (MFN): 6.5%
- [2933.19.37.00](https://border.bot/countries/united-states/hs-codes/2933193700) Compounds containing an unfused pyrazole ring (whether or not hydrogenated) in the structure, Other, Aromatic or modified aromatic, Other, Other, Products described in additional U.S. note 3 to section VI. Duty (MFN): 6.5%
- [2933.19.43.00](https://border.bot/countries/united-states/hs-codes/2933194300) Compounds containing an unfused pyrazole ring (whether or not hydrogenated) in the structure, Other, Aromatic or modified aromatic, Other, Other, Other. Duty (MFN): 6.5%
- [2933.19.45.00](https://border.bot/countries/united-states/hs-codes/2933194500) Compounds containing an unfused pyrazole ring (whether or not hydrogenated) in the structure, Other, Other, Drugs. Duty (MFN): 3.7%
- [2933.19.70.00](https://border.bot/countries/united-states/hs-codes/2933197000) Compounds containing an unfused pyrazole ring (whether or not hydrogenated) in the structure, Other, Other, Other, 3-Methyl-5-pyrazolone. Duty (MFN): free
- [2933.19.90.00](https://border.bot/countries/united-states/hs-codes/2933199000) Compounds containing an unfused pyrazole ring (whether or not hydrogenated) in the structure, Other, Other, Other, Other. Duty (MFN): 6.5%

## In other countries

No other national tariff on border.bot has live lines under 2933.19 yet.

- [The Harmonized System text for 2933.19](https://border.bot/hs-codes/293319)

- Previous subheading: [2933.11](https://border.bot/countries/united-states/hs-codes/293311) Heterocyclic compounds with nitrogen hetero-atom(s) only
- Next subheading: [2933.21](https://border.bot/countries/united-states/hs-codes/293321) Heterocyclic compounds with nitrogen hetero-atom(s) only

## Frequently asked questions

### How many national tariff lines does the United States tariff have under HS 2933.19?

The United States tariff splits HS 2933.19 (compounds containing an unfused pyrazole ring (whether or not hydrogenated) in the structure: Other) into 13 national lines: 2933.19.04.00 (aminomethylphenylpyrazole (Phenylmethylaminopyrazole); and 3-Methyl-1-(p-tolyl)-2-pyrazolin-5-one (p-Tolyl methyl pyrazolone)), 2933.19.08.00 (3-(5-Amino-3-methyl-1H-pyrazol-1-yl)- benzenesulfonic acid; Amino-J-pyrazolone; 3-Amino-1-(2,4,6-trichlorophenyl)-5- pyrazolone; 3-Carboxy-1,4-sulfophenylpyrazol-5-one; 4-Chloro-3-(3-methyl-5-oxo-2-pyrazolin-1- yl)benzenesulfonic acid; 1-(m-Chlorophenyl)-3-methyl-2-pyrazolin- 5-one;p-Chloropyrazolone; 1-(2',5'-Dichlorophenyl)-3-methyl-2- pyrazolin-5-one; 1-(o-Ethylphenyl)-3-methyl-2-pyrazolin- 5-one; 5-Imino-3-methyl-1-phenylpyrazole; 5-Imino-3-methyl-1-(m-sulfophenyl)- pyrazole; 2,4-Methylcarboxypyrazolic acid; Methylphenylpyrazolone; and Sulfinpyrazone), 2933.19.15.00 (1,2-Dimethyl-3,5-diphenyl-1H-pyrazolium methyl sulfate (Difenzoquat methyl sulfate)), 2933.19.18.00 (2-Chloro-5-sulfophenylmethylpyrazolone; 2,5-Dichloro-4-(3-methyl-5-oxo-2- pyrazolin-1-yl) benzenesulfonic acid; Phenyl carbethoxypyrazolone;m-Sulfaminopyrazolone (m-Sulfamido- phenyl methyl pyrazolone); and 1-(p-Sulfophenyl)-3-methyl pyrazolone) and 9 others.

## Sources and updates

The tariff lines for the United States come from border.bot release 1 (edition 2026HTSRev21), read from the publisher’s files, and have been live since 9 October 2026.

The duty rates for the United States come from border.bot release 1 (edition 2026HTSRev21), read from the publisher’s files, and have been live since 9 October 2026.

The trade programmes for the United States come from border.bot release 1 (edition 2026HTSRev21), read from the publisher’s files, and have been live since 9 October 2026.

This page was last updated on 9 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.

Official source files:

- https://hts.usitc.gov/reststop/exportList?from=0000000000&to=9999999999&format=CSV&styles=false

Machine-readable: https://border.bot/countries/united-states/hs-codes/293319.json