United States of America HS Code

HS Code 290435: Perfluorooctane sulphonic acid, its salts and perfluorooctane sulphonyl fluoride : Other salts of perfluorooctane sulphonic acid in United States of America

Q: Is HS code 290435 the same across all countries?

Yes — up to the 6-digit level, HS code 290435 is the same in every WCO member country. Beyond 6 digits, each country extends the code for national tariff and statistical use. United States of America extends it under HTS / HTSUS.

Q: What system does United States of America use to classify HS code 290435?

United States of America classifies products under the Harmonized Tariff Schedule of the United States (HTS / HTSUS; locally Harmonized Tariff Schedule), which extends HS codes to 10 digits. The first 6 digits align with the WCO Harmonized System, and the rest cover national tariff and statistical needs.

Q: Where can I officially look up HS code 290435 in United States of America?

The official source is https://www.cbp.gov/. For faster cross-country lookups, TradeInt's HS Code Tool consolidates classifications across all major countries in one place.

What is HS Code 290435 in United States of America

Under United States of America's Harmonized Tariff Schedule of the United States (Harmonized Tariff Schedule), HS Code 290435 is the WCO Harmonized System subheading for Perfluorooctane sulphonic acid, its salts and perfluorooctane sulphonyl fluoride : Other salts of perfluorooctane sulphonic acid. This is the most detailed internationally standardized level; United States of America extends classifications to 10 digits under its national tariff system. 290435 belongs to Section VI: Products of the chemical or allied industries, Chapter 29: Organic chemicals, Heading 2904: Sulphonated, nitrated or nitrosated derivatives of hydrocarbons, whether or not halogenated.

Explore more 2026 Latest United States of America import export trade data and shipment records for HS Code Other PFOS Salts on TradeInt global trade data platform

Classification Path of HS Code 290435 in United States of America

Section VI

Chapters (28-38) Products of the chemical or allied industries

Chapter 29

Organic chemicals

HS Code 2904

Sulphonated, nitrated or nitrosated derivatives of hydrocarbons, whether or not halogenated

HS Code 290435

Perfluorooctane sulphonic acid, its salts and perfluorooctane sulphonyl fluoride : Other salts of perfluorooctane sulphonic acid

HS Code 2904350000

Other salts of perfluorooctane sulfonic acid

United States of America Tariff Classification: Harmonized Tariff Schedule of the United States (HTS / HTSUS)

In United States of America, HS 290435 is classified under the Harmonized Tariff Schedule of the United States (Harmonized Tariff Schedule) — a 10-digit national extension of the WCO 6-digit Harmonized System.

Tariff schedule Harmonized Tariff Schedule of the United States (HTS / HTSUS)

Local name Harmonized Tariff Schedule

Digits 10

Official source https://www.cbp.gov/

You know what 290435 means. Now see 2026 latest real trade activity for Other PFOS Salts in United States of America.

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Top Trading Product of HS Code 2904

Top United States of America import Product Under HS Code 2904

1 290420: Derivatives containing only nitro or only nitroso groups $62.1M 2 290410: Derivatives containing only sulpho groups, their salts and ethyl esters $35.2M 3 290499: Other : Other $8.9M

Figures shown for 2025.

For more 2026 recent data, search for United States of America import trade records

Top United States of America export Product Under HS Code 2904

1 290420: Derivatives containing only nitro or only nitroso groups $44.1M 2 290410: Derivatives containing only sulpho groups, their salts and ethyl esters $39.2M 3 290491: Other : Trichloronitromethane (chloropicrin) $13.1M

Figures shown for 2025.

For more 2026 recent data, search for United States of America export trade records

Related HS Code to United States of America Other PFOS Salts (290435)

HS Code 2904350000

Other salts of perfluorooctane sulfonic acid

HS Code 290410

Derivatives containing only sulpho groups, their salts and ethyl esters

HS Code 290420

Derivatives containing only nitro or only nitroso groups

HS Code 290431

Perfluorooctane sulphonic acid, its salts and perfluorooctane sulphonyl fluoride : Perfluorooctane sulphonic acid

HS Code 290432

Perfluorooctane sulphonic acid, its salts and perfluorooctane sulphonyl fluoride : Ammonium perfluorooctane sulphonate

HS Code 290433

Perfluorooctane sulphonic acid, its salts and perfluorooctane sulphonyl fluoride : Lithium perfluorooctane sulphonate

HS Code 290434

Perfluorooctane sulphonic acid, its salts and perfluorooctane sulphonyl fluoride : Potassium perfluorooctane sulphonate

HS Code 290436

Perfluorooctane sulphonic acid, its salts and perfluorooctane sulphonyl fluoride : Perfluorooctane sulphonyl fluoride

HS Code 290491

Other : Trichloronitromethane (chloropicrin)

HS Code 290499

Other : Other

Frequently Asked Questions

What is HS code 290435 in United States of America?

HS code 290435 covers Perfluorooctane sulphonic acid, its salts and perfluorooctane sulphonyl fluoride : Other salts of perfluorooctane sulphonic acid in United States of America. It sits in Chapter 29 (Organic chemicals), Heading 2904 of the Harmonized System, and is classified under HTS / HTSUS.

Is HS code 290435 the same across all countries?

What system does United States of America use to classify HS code 290435?

Where can I officially look up HS code 290435 in United States of America?