HS Code 25.10 – Natural calcium phosphates; natural aluminium calcium phosphates and phosphatic chalk

HS code 2510 is a 4-digit heading in the Harmonized System that covers: Natural calcium phosphates; natural aluminium calcium phosphates and phosphatic chalk. Heading 2510 covers natural calcium phosphates, natural aluminium calcium phosphates, and phosphatic chalk. This classification is profoundly significant as it encompasses phosphate rock, the primary global source of phosphorus, a critical nutrient for plant growth and thus essential for agriculture. The scope includes these natural phosphates in crude, ground, or beneficiated forms, but strictly excludes chemically processed phosphates or manufactured fertilizers. Key sub-categories involve different grades of phosphate rock used for fertilizer production, animal feed supplements, and industrial chemical manufacturing. The distinction between natural and processed phosphates is paramount for trade compliance, as processed fertilizers fall under Chapter 31. Historically, the discovery and large-scale mining of phosphate rock in the 19th century revolutionized agriculture, enabling significant increases in crop yields. Its trade significance cannot be overstated, as countries lacking natural deposits rely heavily on imports to sustain their agricultural sectors. As part of Chapter 25, these materials represent naturally occurring mineral earths, typically traded in vast bulk quantities, highlighting their role as foundational raw materials for global food security and various industrial processes.

Phosphate rock (crude), ground phosphate rock, beneficiated phosphate rock, natural calcium phosphate (lump), powdered natural calcium phosphate, natural aluminium calcium phosphate, phosphatic chalk, apatite (natural mineral), collophane, phosphorite, fossilized guano, fertilizer-grade phosphate rock, animal feed-grade phosphate rock, industrial-grade phosphate rock, calcined phosphate rock (for specific uses), defluorinated phosphate rock (natural), crushed phosphate ore, raw phosphate concentrate, direct application phosphate rock.

A frequent misclassification involves confusing natural phosphates (2510) with manufactured phosphatic fertilizers (Chapter 31), such as superphosphates or diammonium phosphate (DAP), which are chemically processed. Another error is classifying manufactured phosphorus compounds (e.g., phosphates, phosphonates) under 2835, which are distinct from natural rock. While phosphatic chalk is included in 2510, plain natural chalk (calcium carbonate without significant phosphate content) belongs to 2509. The key is the 'natural' state and the presence of phosphate minerals.

In 2025, the top exporters of HS code 2510 in UN Comtrade data were Morocco ($1.2B, 26% of world exports), Jordan (about $934M) and Peru (about $579M). World exports came to about $4.6B, adding countries' reported figures and partner-based estimates for those that did not report (UN Comtrade data). Countries that did not report 2025 data are estimated from partner records, which can understate them.

In 2025, the top importers of HS code 2510 in UN Comtrade data were India ($1.9B, 42% of world imports), the United States ($369M) and Lithuania ($286M). World imports came to about $4.5B, adding countries' reported figures and partner-based estimates for those that did not report (UN Comtrade data). Countries that did not report 2025 data are estimated from partner records, which can understate them.

HS code 2510 is a 4-digit heading under Chapter 25 of the Harmonized System. The first 2 digits (25) identify the chapter, and digits 3-4 (10) specify the heading. This code contains multiple 6-digit subheadings for precise product classification.