HS Code for Superphosphate fertilizer

Superphosphate fertilizer is classified under HS code 3103.19. Chapter 31 of the Harmonized System is dedicated to fertilizers, and heading 3103 specifically covers mineral or chemical fertilizers that are phosphatic. Superphosphates are products obtained by the action of sulfuric acid or phosphoric acid on ground natural phosphates. The subheading 3103.19 is used for superphosphates that contain by weight less than 35% of diphosphorus pentaoxide (P2O5). This classification is highly dependent on the chemical analysis of the phosphorus content. If the concentration of P2O5 is lower than the 35% threshold, it falls into this "other" category of superphosphates. This distinction is crucial for trade statistics and the application of agricultural regulations, as the nutrient density determines the product's efficacy and market value. The classification remains in 3103 as long as the product is a purely phosphatic fertilizer and not a mixture containing other primary nutrients like nitrogen or potassium.

Products Included

• Single superphosphate (SSP)
• Normal superphosphate
• Low-grade triple superphosphate (below 35% P2O5)
• Enriched superphosphate (below 35% P2O5)

Common Misclassification

The most common misclassification is with HS code 3103.11, which is specifically for superphosphates containing 35% or more by weight of P2O5 (often called Triple Superphosphate or TSP). Another error is using 3105.20, which is for NPK fertilizers; if the superphosphate is mixed with nitrogen or potassium, it must move to heading 3105.

FAQ

What is the HS code for superphosphate with 20% P2O5?

Superphosphate with 20% P2O5 is classified under HS code 3103.19.

What code is used for Triple Superphosphate (TSP)?

Triple Superphosphate usually contains more than 45% P2O5 and is therefore classified under HS code 3103.11.