HS Code for Monosodium phosphate

Monosodium phosphate (MSP), also known as anhydrous monobasic sodium phosphate or sodium dihydrogen phosphate (NaH2PO4), is classified under HS code 2835.22. This classification is found in Chapter 28 (Inorganic chemicals). Heading 2835 covers phosphates, and subheading 2835.22 specifically groups mono- and disodium phosphates together. The classification is determined by the chemical composition of the salt, consisting of a sodium cation and a dihydrogen phosphate anion. MSP is widely utilized in water treatment, food processing as an emulsifier, and in pharmaceutical applications as a buffering agent. To remain in heading 2835, the substance must be a separate chemically defined compound. If the product is an aqueous solution, it remains in this code, but if it is mixed with other chemicals for a specific functional use, the classification may shift to a different chapter.

Products Included

• Monosodium phosphate anhydrous
• Monosodium phosphate monohydrate
• Monosodium phosphate dihydrate
• Sodium dihydrogen orthophosphate
• Food-grade monosodium phosphate

Common Misclassification

Monosodium phosphate is often misclassified with other sodium phosphates such as trisodium phosphate (2835.29) or sodium triphosphate (sodium tripolyphosphate), which is specifically assigned to 2835.31. It is also frequently confused with monopotassium phosphate (2835.24) due to their similar industrial uses. Another area of confusion is in the food industry; if MSP is part of a prepared "baking powder" mixture, it would be classified under 2102.30 rather than the chemical code 2835.22.

FAQ

What is the HS code for monosodium phosphate?

The HS code for monosodium phosphate is 2835.22.

Is disodium phosphate classified under the same HS code?

Yes, HS code 2835.22 covers both monosodium and disodium phosphates, as they are both orthophosphates of sodium with one or two hydrogen atoms replaced.