Chapter 3103 — Customs Tariff Headings

Crop-Specific TSP for Citrus 47% P2O5

Crop-Specific TSP for Citrus is a triple superphosphate fertilizer formulated with 47% diphosphorus pentaoxide (P2O5) by weight, designed for citrus orchards requiring high phosphorus without nitrogen competition. It is a superphosphate product that exceeds the 35% P2O5 threshold, making it classifiable under tariff item 3103.11.00. It supports root development and fruit quality in perennial crops.

Double Superphosphate Granules 40% P2O5

Double Superphosphate Granules with 40% P2O5 are produced via the wet process using phosphoric acid, yielding a water-soluble phosphorus fertilizer. As a superphosphate containing 40% diphosphorus pentaoxide, it meets the 35% threshold for tariff item 3103.11.00. It is suitable for basal application in agricultural soils.

Enhanced Superphosphate 39% P2O5 Granular

Enhanced Superphosphate Granular with 39% P2O5 is produced through proprietary processing to improve granule integrity and handling. As a superphosphate exceeding the 35% P2O5 threshold, it falls under tariff item 3103.11.00. It reduces application rates while maintaining efficacy in field crops.

Granular Triple Superphosphate 44-47% P2O5

Granular Triple Superphosphate provides 44-47% available P2O5 in uniform granules, designed for easy soil application and reduced dust. As a superphosphate with P2O5 content well above 35%, it is classifiable under tariff item 3103.11.00. It is commonly used in direct application for phosphorus-deficient soils.

High-Analysis Triple Superphosphate TSP 48% P2O5

High-Analysis Triple Superphosphate TSP delivers 48% P2O5 for intensive farming, manufactured without fillers for maximum concentration. It qualifies as a superphosphate exceeding the 35% P2O5 threshold, falling under tariff item 3103.11.00. It is commonly used in direct application for high-phosphorus-demand crops.

Industrial Grade TSP 42% P2O5 Bulk

Industrial Grade TSP with 42% P2O5 is intended for large-scale farming operations and shipped in bulk railcars. As a superphosphate exceeding the 35% P2O5 threshold, it falls under tariff item 3103.11.00. It provides a cost-effective phosphorus source for commercial agriculture.

Premium TSP 46-0-0 Fertilizer Grade

Premium TSP labeled 46-0-0 indicates 46% P2O5, 0% nitrogen, and 0% K2O, optimized for phosphorus-only nutrition. As a superphosphate with P2O5 content above 35%, it falls under tariff item 3103.11.00. It enhances flower and fruit development in various crops.

Single Superphosphate Enriched to 38% P2O5

Single Superphosphate Enriched to 38% P2O5 is boosted through additional phosphoric acid treatment for higher efficacy. As a superphosphate meeting the 35% P2O5 threshold, it falls under tariff item 3103.11.00. It provides a higher-analysis alternative to standard single superphosphate.

Triple Superphosphate 46% P2O5 Fertilizer

Triple Superphosphate 46% P2O5 is a high-phosphorus fertilizer produced by reacting phosphate rock with phosphoric acid. As a superphosphate with 46% diphosphorus pentaoxide, it exceeds the 35% threshold and falls under tariff item 3103.11.00. It is widely used for phosphorus supplementation in agricultural soils.

Water-Soluble Triple Superphosphate 45% P2O5

Water-Soluble Triple Superphosphate at 45% P2O5 is designed for fertigation systems and drip irrigation, ensuring full solubility. As a superphosphate exceeding the 35% P2O5 threshold, it falls under tariff item 3103.11.00. It prevents phosphorus fixation in alkaline soils and is supplied in bulk form.

Double Superphosphate Granules (DSP)

Double superphosphate (DSP) granules are a phosphatic fertilizer produced by reacting phosphate rock with phosphoric acid, yielding 40-46% P2O5. Unlike single superphosphate, DSP contains no calcium sulfate, making it a concentrated source of phosphorus for agricultural use. It falls under tariff item 3103.19.00 as a superphosphate other than those specified elsewhere in heading 31.03.

Enriched Triple Superphosphate with Micronutrients

Enriched triple superphosphate (TSP) with micronutrients such as zinc and boron is a phosphatic fertilizer providing 44-46% P2O5. The added micronutrients are inorganic non-fertilizing substances, and the product remains a superphosphate under chapter note 3(c). It is classified under tariff item 3103.19.00 as other superphosphates.

Granular Triple Superphosphate 46% P2O5

Granular triple superphosphate (TSP) with 46% P2O5 is a high-analysis phosphatic fertilizer produced by reacting phosphate rock with phosphoric acid. The granules are sized 2-4mm for uniform application in agricultural settings. It is classified under tariff item 3103.19.00 as other superphosphates, provided it is not put up in forms described in heading 31.05.

High-Grade Double Superphosphate 42%

High-grade double superphosphate (DSP) with 42% P2O5 is a dense, granular phosphatic fertilizer suitable for pneumatic application in large-scale farming. It is produced by acidulating phosphate rock with phosphoric acid, resulting in a concentrated phosphorus source. This product falls under tariff item 3103.19.00 as other superphosphates.

Triple Superphosphate Fertilizer (TSP)

Triple superphosphate (TSP) is a concentrated phosphatic fertilizer containing 44-48% P2O5, made by reacting phosphate rock with phosphoric acid. It is widely used to correct phosphorus deficiencies in soils. Under tariff item 3103.19.00, it is classified as other superphosphates, provided it is not put up in retail forms.

Water-Soluble Triple Superphosphate Powder

Water-soluble triple superphosphate powder is a finely ground form of TSP with 44% P2O5, designed for fertigation and foliar application in greenhouses. It dissolves readily in water, providing a quick-release phosphorus source. This product is classified under tariff item 3103.19.00 as other superphosphates, as it is not put up in retail packages.

Calcined Natural Phosphate Fertilizer

Calcined natural phosphate fertilizer is produced by heat-treating natural phosphates of heading 25.10 beyond simple impurity removal, which enhances its reactivity for agricultural use. This product falls under tariff item 3103.90.00 as it is a phosphatic fertilizer not elsewhere specified, and chapter note 3(a)(ii) explicitly includes calcined natural phosphates in heading 31.03.

Calcium Hydrogenorthophosphate Fertilizer

Calcium hydrogenorthophosphate fertilizer, also known as dicalcium phosphate, contains at least 0.2% fluorine by weight on a dry anhydrous basis, making it a recognized phosphatic fertilizer under chapter note 3(a)(iv). This product is used in agriculture to provide phosphorus to crops and falls under tariff item 3103.90.00 as a phosphatic fertilizer not elsewhere specified.

Rock Phosphate Heat-Treated Fertilizer

Rock phosphate that has been heat-treated beyond simple impurity removal, such as calcination, is a phosphatic fertilizer covered by chapter note 3(a)(ii). This product is used to supply phosphorus to agricultural soils and falls under tariff item 3103.90.00 as a phosphatic fertilizer not elsewhere specified.

Single Superphosphate Granules

Single superphosphate granules are produced by treating phosphate rock with sulfuric acid, resulting in a fertilizer containing 16-20% P2O5 and sulphur. This product is explicitly a superphosphate under chapter note 3(a)(iii) and falls under tariff item 3103.90.00 as a phosphatic fertilizer not elsewhere specified.