HS Code for Potassium metabisulphite

Potassium metabisulphite, also known as potassium pyrosulphite, is classified under HS code 2832.20. This classification is situated within heading 2832, which is dedicated to sulphites, thiosulphates, and their derivatives. The Harmonized System distinguishes between sodium sulphites (2832.10) and other sulphites (2832.20), placing potassium metabisulphite in the latter category. The classification is based on the chemical structure of the substance as an inorganic salt of sulphurous acid. As a separate chemically defined compound, it meets the criteria for Chapter 28. It is widely utilized in the food and beverage industry as a preservative and antioxidant, particularly in winemaking. Despite its widespread use as a food additive (E224), it does not lose its chemical classification in Chapter 28 unless it is mixed with other substances to the point that it becomes a prepared food preservative of heading 3824 or 3808.

Products Included

• Potassium metabisulphite powder (E224)
• Potassium pyrosulphite in crystalline form
• Food-grade potassium metabisulphite for wine preservation
• Technical grade potassium metabisulphite for textile bleaching
• Potassium metabisulphite used as a photographic developer component

Common Misclassification

A common misclassification occurs with HS code 2833.29, which covers other sulphates. Importers often confuse sulphites (SO3) with sulphates (SO4) due to the similarity in nomenclature. Potassium sulphate is a distinct chemical classified under 2833.29 (or 3104 if used as fertilizer). Additionally, potassium metabisulphite is sometimes incorrectly classified under 2832.10, which is strictly reserved for sodium sulphites. It is essential to verify the cation (potassium vs. sodium) to ensure the correct subheading is applied.

FAQ

What is the HS code for potassium metabisulphite?

The HS code for potassium metabisulphite is 2832.20, which covers sulphites other than those of sodium.

Does the food-grade status change the HS code for potassium metabisulphite?

No, the food-grade status (E224) does not change the classification. As long as it is a separate chemically defined inorganic compound, it remains under HS code 2832.20.