HS Code for Sodium bisulphate

Sodium bisulphate, chemically known as sodium hydrogen sulphate (NaHSO4), is classified under HS code 2833.19. This classification is situated within Chapter 28, which encompasses inorganic chemicals and their compounds. Heading 2833 is designated for sulphates, alums, and peroxosulphates. Within this heading, the system distinguishes between different types of sodium sulphates. Subheading 2833.11 is specifically for disodium sulphate (the neutral salt), while 2833.19 serves as the 'other' category for sodium sulphates, which includes the acid salt, sodium bisulphate. The classification is determined by the chemical structure of the compound; sodium bisulphate is formed by the partial neutralization of sulphuric acid by a sodium base, leaving one replaceable hydrogen atom. As a separate chemically defined compound, it must adhere to the requirements of Chapter 28, Note 1. It is widely used in water treatment, metal finishing, and as a pH adjuster in various industries. Accurate classification under 2833.19 is vital for regulatory compliance, particularly because this chemical is often used in sensitive environmental and industrial processes where chemical purity and identity are strictly monitored.

Products Included

• Sodium hydrogen sulphate (Sodium bisulphate)
• Anhydrous sodium bisulphate
• Sodium bisulphate monohydrate
• Nitre cake (industrial grade sodium bisulphate)
• Dry acid (sodium bisulphate used for pH control)
• Sodium acid sulphate

Common Misclassification

Sodium bisulphate (2833.19) is most commonly confused with disodium sulphate, which is classified under HS code 2833.11. The distinction is chemical: 2833.11 is for the neutral salt (Na2SO4), while 2833.19 is for the acid salt (NaHSO4). Another potential area of confusion involves sodium sulphites, which fall under heading 2832. Specifically, sodium metabisulphite (2832.10) is often confused with sodium bisulphate due to the similarity in names, despite being entirely different chemical species with different oxidation states of sulphur.

FAQ

What is the HS code for sodium bisulphate?

The HS code for sodium bisulphate (sodium hydrogen sulphate) is 2833.19.

Is sodium bisulphate the same as sodium metabisulphite for customs?

No, they are different chemicals. Sodium bisulphate is a sulphate classified under 2833.19, while sodium metabisulphite is a sulphite classified under 2832.10.