HS Code for High-grade superphosphate

High-grade superphosphate is classified under HS code 3103.11. This classification is determined by the chemical composition of the phosphatic fertilizer, specifically the concentration of diphosphorus pentaoxide (P2O5). According to the Harmonized System, mineral or chemical phosphatic fertilizers are grouped under heading 3103. The subheading 3103.11 is strictly reserved for superphosphates that contain a weight of 35% or more of P2O5. This high concentration typically refers to Triple Superphosphate (TSP), which is produced by reacting phosphate rock with phosphoric acid, rather than the sulfuric acid used for single superphosphate. The classification process requires precise laboratory analysis to confirm the phosphorus content, as the percentage determines whether the product falls under this specific high-grade category or the residual category for lower-grade superphosphates (3103.19). Proper classification is essential for international trade, as many jurisdictions apply different tariff rates, environmental regulations, or agricultural subsidies based on the nutrient density of the fertilizer. Furthermore, if the superphosphate is presented in tablets or similar forms, or in packages with a gross weight not exceeding 10 kg, it must be classified under heading 3105.10, regardless of the chemical concentration. The 35% threshold is a hard limit established by the World Customs Organization to standardize the trade of concentrated fertilizers globally.

Products Included

• Triple Superphosphate (TSP) with 46% P2O5 content
• Concentrated superphosphate exceeding 35% P2O5
• Granulated high-analysis phosphatic fertilizers
• Double superphosphate meeting the 35% threshold

Common Misclassification

The most frequent misclassification occurs with HS code 3103.19, which is used for superphosphates containing less than 35% P2O5. Another common error is using 3105.20, 3105.30, or 3105.40, which are reserved for fertilizers containing two or three fertilizing elements (nitrogen, phosphorus, and potassium). If the product contains any nitrogen, it cannot stay in 3103.

FAQ

What is the HS code for high-grade superphosphate?

The specific HS code is 3103.11, which applies to superphosphates with a P2O5 concentration of 35% or more by weight.

Does this code include Monoammonium Phosphate (MAP)?

No, MAP contains nitrogen and is therefore classified under heading 3105, specifically 3105.40, rather than the purely phosphatic heading 3103.