HS Code for Liquid caustic soda

Liquid caustic soda, technically known as sodium hydroxide in aqueous solution, is classified under HS code 2815.12. This classification is determined by the rules of Chapter 28, which covers inorganic chemicals and precious metal compounds. Heading 2815 is dedicated to sodium hydroxide (caustic soda), potassium hydroxide (caustic potash), and peroxides of sodium or potassium. The heading is split into two primary subheadings based on the physical state of the chemical: 2815.11 for the solid form (such as flakes, pellets, or blocks) and 2815.12 for the liquid form (aqueous solution). The liquid form is typically produced through the electrolysis of sodium chloride brine and is traded at various concentrations, most commonly 50%. Regardless of the concentration level in water, as long as the product remains a pure chemical solution without the addition of other functional ingredients like surfactants, it remains within 2815.12. This classification follows GRI 1, as the subheading text specifically describes the product in its aqueous state.

Products Included

• Sodium hydroxide solution
• Soda lye
• Liquid soda
• Caustic lye
• Aqueous sodium hydroxide (various concentrations)
• Membrane grade caustic soda liquid
• Diaphragm grade caustic soda liquid

Common Misclassification

The most frequent misclassification is 2815.11, which is reserved strictly for solid sodium hydroxide. Importers often confuse the two subheadings if they do not specify the physical state in the shipping documents. Another common error involves HS code 3402, which covers organic surface-active agents and cleaning preparations. If caustic soda is mixed with detergents or other chemicals to create a specialized industrial cleaner, it may lose its identity as a pure chemical and move to Chapter 34. Additionally, 3824 is sometimes incorrectly used for chemical mixtures, but 2815.12 is the specific heading for the aqueous solution of the pure chemical.

FAQ

What is the HS code for Liquid caustic soda?

The HS code for liquid caustic soda (sodium hydroxide in aqueous solution) is 2815.12.

Does the concentration of the solution change the HS code?

No, the concentration of sodium hydroxide in the water does not change the HS code. Whether it is a 25%, 32%, or 50% solution, it remains classified under 2815.12 as long as it is an aqueous solution of the pure chemical.