HS Code for PFOS salts
PFOS salts are classified under HS code 2904.35. As derivatives of hydrocarbons, these substances fall under Chapter 29 (Organic Chemicals) and heading 2904. While the parent acid is found in 2904.31, the salts—formed when the sulfonic acid group reacts with a base—are specifically isolated in 2904.35. This distinction is vital for international trade monitoring under environmental treaties. To be classified here, the salt must be a separate chemically defined compound. Common cations include potassium, lithium, and ammonium. These salts are often used in industrial applications for their surfactant properties, but their classification remains in Chapter 29 as long as they are not mixed with other substances for a specific functional use.
Products Included
- Potassium perfluorooctane sulfonate
- Lithium perfluorooctane sulfonate
- Ammonium perfluorooctane sulfonate
- Diethanolammonium perfluorooctane sulfonate
- Tetraethylammonium perfluorooctane sulfonate
- Didecyldimethylammonium perfluorooctane sulfonate
Common Misclassification
The most common misclassification is using HS code 2904.31, which is strictly for the acid form (PFOS). Another frequent error is using 3824.87, which is for mixtures. If the salt is imported as a pure chemical, it belongs in 2904.35; if it is imported as part of a formulated product (like a carpet cleaner or stain repellant), it must be classified in Chapter 38 or the specific heading for that preparation.
FAQ
What is the HS code for PFOS salts?
The HS code for salts of perfluorooctane sulphonic acid is 2904.35.
Is potassium PFOS classified under this code?
Yes, potassium perfluorooctane sulfonate is one of the primary salts classified under HS code 2904.35.
Industry
Frequently Asked Questions
What is the HS code for PFOS salts?
The HS code for PFOS salts is 290435 (Derivatives of hydrocarbons; salts of perfluorooctane sulphonic acid n.e.c in heading no. 2904, whether or not halogenated).
How do I classify PFOS salts for customs?
PFOS salts is classified under HS code 290435 — Derivatives of hydrocarbons; salts of perfluorooctane sulphonic acid n.e.c in heading no. 2904, whether or not halogenated. This is a 6-digit subheading level code.
Is the HS code for PFOS salts the same in all countries?
The base HS code 290435 for PFOS salts is internationally standardized for the first 6 digits across 200+ countries. Individual countries may add additional digits for national tariff lines and specific classifications.