About HS Code 310390
HS code 310390 is a residual category for 'other' phosphatic mineral or chemical fertilizers not elsewhere specified in heading 3103. This includes a variety of specialized phosphorus-containing fertilizers that don't fall under superphosphates. Examples might be fused calcium-magnesium phosphates, basic slag (Thomas slag), or other unique phosphate compounds designed for specific soil conditions or crop requirements. These products often cater to niche markets or provide additional benefits beyond just phosphorus, such as liming effects or micronutrient delivery. International trade involves specialized chemical manufacturers and distributors, exporting to countries with particular agricultural needs or advanced farming practices. Importers range from developed agricultural markets to regions with specific soil deficiencies. Key trade considerations include precise chemical composition, solubility, efficacy claims, and adherence to agricultural input regulations, especially regarding heavy metal content.
Products Under This Code
Fused calcium-magnesium phosphate, basic slag, defluorinated phosphate, rock phosphate (treated for fertilizer use), calcined phosphate.
Real World Examples
Thomas slag (various producers), Fused Magnesium Phosphate (FMP), various treated rock phosphate products.
Common Misclassification
This 'other' category is susceptible to misclassification with superphosphates (310311, 310319) if the product is not a true superphosphate, or with multi-nutrient fertilizers (3105) if other nutrients are significant, requiring careful analysis of the primary phosphatic component.
Products Classified Under 3103.90
Industry
This code belongs to the Chemicals industry.
Trade Overview
Trade is global, with specialized producers in Europe and Asia exporting to diverse agricultural markets, often for specific soil or crop applications.
Frequently Asked Questions
What is HS code 310390?
HS code 310390 covers: Fertilizers, mineral or chemical; phosphatic, n.e.c. in heading no. 3103. HS code 310390 is a residual category for 'other' phosphatic mineral or chemical fertilizers not elsewhere specified in heading 3103. This includes a variety of specialized phosphorus-containing fertilizers that don't fall under superphosphates. Examples might be fused calcium-magnesium phosphates, basic slag (Thomas slag), or other unique phosphate compounds designed for specific soil conditions or crop requirements. These products often cater to niche markets or provide additional benefits beyond just phosphorus, such as liming effects or micronutrient delivery. International trade involves specialized chemical manufacturers and distributors, exporting to countries with particular agricultural needs or advanced farming practices. Importers range from developed agricultural markets to regions with specific soil deficiencies. Key trade considerations include precise chemical composition, solubility, efficacy claims, and adherence to agricultural input regulations, especially regarding heavy metal content.
What products fall under HS code 310390?
Fused calcium-magnesium phosphate, basic slag, defluorinated phosphate, rock phosphate (treated for fertilizer use), calcined phosphate.
What are common misclassifications for HS code 310390?
This 'other' category is susceptible to misclassification with superphosphates (310311, 310319) if the product is not a true superphosphate, or with multi-nutrient fertilizers (3105) if other nutrients are significant, requiring careful analysis of the primary phosphatic component.
How is HS code 310390 structured?
HS code 310390 is a 6-digit subheading under the Harmonized System. The first 2 digits (31) identify the chapter, digits 3-4 (03) identify the heading, and digits 5-6 (90) specify the subheading. This code is standardized globally by the World Customs Organization.