HS Code for Ferrous sulphate

Ferrous sulphate, also known as iron(II) sulphate, is classified under HS code 2833.29. This classification is found within Chapter 28 (Inorganic chemicals), specifically under heading 2833 which covers sulphates, alums, and peroxosulphates. Subheading 2833.29 is the residual category for "other" sulphates not specifically listed elsewhere (such as those of magnesium, aluminum, nickel, or copper). Ferrous sulphate is commonly found in various hydration states, most notably the heptahydrate (green vitriol) and the monohydrate. The classification is based on the chemical structure of the salt, consisting of iron and sulphate ions. It is widely used in water treatment, as a soil amendment, and in the manufacture of inks and pigments, but its primary classification remains tied to its identity as an inorganic sulphate.

Products Included

• Ferrous sulphate heptahydrate (Green Vitriol)
• Ferrous sulphate monohydrate
• Dried ferrous sulphate
• Technical grade iron(II) sulphate for industrial use
• Ferrous sulphate used as a coagulant in water treatment

Common Misclassification

Ferrous sulphate is often misclassified under 3105.90, which covers other fertilizers. While it is used to treat iron chlorosis in plants, it is technically a soil amendment or a chemical rather than a complete fertilizer unless mixed with NPK components. It is also frequently confused with 2833.25 (copper sulphates) or 2835.29 (ferric phosphate) due to similar naming conventions in industrial shipping. Another potential error is 3824.99 (chemical products not elsewhere specified), but since ferrous sulphate is a chemically defined inorganic salt, Chapter 28 must be used according to the Chapter 28 Note 1.

FAQ

What is the HS code for ferrous sulphate?

The HS code for ferrous sulphate is 2833.29.

Does the hydration state change the HS code?

No, whether it is the monohydrate or heptahydrate form, the product remains classified under 2833.29 as an inorganic sulphate of iron.