Hong Kong, China Special Administrative Region HS Code

HS Code 290435: Perfluorooctane sulphonic acid, its salts and perfluorooctane sulphonyl fluoride : Other salts of perfluorooctane sulphonic acid in Hong Kong, China Special Administrative Region

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. Hong Kong, China Special Administrative Region extends it under HKHS.

Q: What system does Hong Kong, China Special Administrative Region use to classify HS code 290435?

Hong Kong, China Special Administrative Region classifies products under the Hong Kong Harmonized System (HKHS; locally 香港協調制度), which extends HS codes to 8 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 Hong Kong, China Special Administrative Region?

The official source is https://www.customs.gov.hk/en/home/index.html. 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 Hong Kong, China Special Administrative Region

Under Hong Kong, China Special Administrative Region's Hong Kong Harmonized System (香港協調制度), 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; Hong Kong, China Special Administrative Region extends classifications to 8 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 Hong Kong, China Special Administrative Region 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 Hong Kong, China Special Administrative Region

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 29043500

SALTS OF PERFLUOROOCTANE SULPHONIC ACID, NESOI 全氟辛烷磺酸的鹽，未列明或未包括在其他編號

Hong Kong, China Special Administrative Region Tariff Classification: Hong Kong Harmonized System (HKHS)

In Hong Kong, China Special Administrative Region, HS 290435 is classified under the Hong Kong Harmonized System (香港協調制度) — a 8-digit national extension of the WCO 6-digit Harmonized System.

Tariff schedule Hong Kong Harmonized System (HKHS)

Local name 香港協調制度

Digits 8

Official source https://www.customs.gov.hk/en/home/index.html

You know what 290435 means. Now see 2026 latest real trade activity for Other PFOS Salts in Hong Kong, China Special Administrative Region.

Buyers, suppliers, origin and destination countries, shipment dates, and quantities direct from customs records.

Search 2026 Latest Hong Kong, China Special Administrative Region Import Data Search 2026 Latest Hong Kong, China Special Administrative Region Export Data

Top Trading Product of HS Code 2904

Top Hong Kong, China Special Administrative Region import Product Under HS Code 2904

1 290410: Derivatives containing only sulpho groups, their salts and ethyl esters $4.7M 2 290499: Other : Other $117.0K

Figures shown for 2025.

For more 2026 recent data, search for Hong Kong, China Special Administrative Region import trade records

Top Hong Kong, China Special Administrative Region export Product Under HS Code 2904

1 290410: Derivatives containing only sulpho groups, their salts and ethyl esters $3.6M 2 290420: Derivatives containing only nitro or only nitroso groups $390.1K 3 290499: Other : Other $302.7K

Figures shown for 2025.

For more 2026 recent data, search for Hong Kong, China Special Administrative Region export trade records

Related HS Code to Hong Kong, China Special Administrative Region Other PFOS Salts (290435)

HS Code 29043500

SALTS OF PERFLUOROOCTANE SULPHONIC ACID, NESOI

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 Hong Kong, China Special Administrative Region?

HS code 290435 covers Perfluorooctane sulphonic acid, its salts and perfluorooctane sulphonyl fluoride : Other salts of perfluorooctane sulphonic acid in Hong Kong, China Special Administrative Region. It sits in Chapter 29 (Organic chemicals), Heading 2904 of the Harmonized System, and is classified under HKHS.

Is HS code 290435 the same across all countries?

What system does Hong Kong, China Special Administrative Region use to classify HS code 290435?

Where can I officially look up HS code 290435 in Hong Kong, China Special Administrative Region?