HS Code for Tetrasodium pyrophosphate

Tetrasodium pyrophosphate (TSPP) is classified under HS code 2835.39. This classification falls within Chapter 28, which covers inorganic chemicals, precious metals, and rare-earth metals. Heading 2835 is designated for phosphinates (hypophosphites), phosphonates (phosphites), and phosphates, including polyphosphates. TSPP is a polyphosphate, specifically a sodium salt of pyrophosphoric acid. While sodium triphosphate (sodium tripolyphosphate) has its own specific subheading (2835.31) due to its high trade volume, other polyphosphates, including tetrasodium pyrophosphate, are grouped under the "other" category in subheading 2835.39. This classification applies to both the anhydrous form and the decahydrate form of the chemical. TSPP is widely used in the food industry as an emulsifier, thickening agent, and buffering agent, and in industrial applications as a water softener and detergent builder. The classification remains 2835.39 regardless of the grade (food vs. industrial) as long as it is a chemically defined sodium polyphosphate.

Products Included

• Tetrasodium pyrophosphate (TSPP)
• Sodium pyrophosphate, anhydrous
• Sodium pyrophosphate, decahydrate
• Tetrasodium diphosphate

Common Misclassification

TSPP is frequently misclassified under 2835.31, which is reserved exclusively for sodium triphosphate (tripolyphosphate). While both are sodium polyphosphates, the molecular structure differs. It may also be confused with 2835.29, which covers "other" phosphates (orthophosphates). Pyrophosphates are condensed phosphates and must be classified under the polyphosphate subheadings (2835.31-39) rather than the simple phosphate subheadings (2835.22-29).

FAQ

What is the HS code for Tetrasodium pyrophosphate?

The HS code for Tetrasodium pyrophosphate is 2835.39, categorized under other polyphosphates.

Is food-grade TSPP classified differently?

No, the HS code 2835.39 applies to tetrasodium pyrophosphate regardless of its purity or intended use, provided it is not mixed with other ingredients into a prepared food additive.