Industrial Grade Ammonium Sulfate Crystals
Pure crystalline ammonium sulfate used in industrial agriculture for alkaline soil correction and as a nitrogen source in large-scale farming. Classified under HTS 3102.29.00.00 as 'other' ammonium sulfate not in retail form. Commonly applied via broadcast spreaders for crops like potatoes and soybeans.
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If packaged for retail sale
Any retail packaging moves the product to 3105.90 for mixtures or other fertilizers.
If imported primarily as a chemical reagent
Pure ammonium sulfate used in non-fertilizer applications like water treatment falls under inorganic chemicals in Chapter 28.
If it's a mixture with other nitrogenous substances
Complex nitrogenous mixtures not specifically listed elsewhere go to 3102.50.
Not sure which classification is right?
Our AI classifier can analyze your specific product and recommend the correct HTS code with confidence.
Import Tips & Compliance
• Check for impurities that might reclassify under different subheadings; bulk shipments require proper MSDS documentation; avoid retail-style labeling to maintain 3102 classification
Related Products under HTS 3102.29.00.00
Granular Ammonium Sulfate Fertilizer 21-0-0
Granular ammonium sulfate (21% nitrogen, 24% sulfur) is a widely used nitrogenous fertilizer for correcting sulfur deficiencies in crops like corn and wheat. It falls under HTS 3102.29.00.00 as a pure ammonium sulfate not packaged for retail sale under heading 3105. The product dissolves slowly in soil, providing sustained nutrient release.
Water-Soluble Ammonium Sulfate 21% Nitrogen
Fast-dissolving ammonium sulfate powder for fertigation systems and foliar applications in greenhouse vegetable production. HTS 3102.29.00.00 covers this pure form not in retail packaging. Provides immediate nitrogen and sulfur availability to plants.
AgroChem Ammonium Sulfate Bulk Fertilizer
Bulk ammonium sulfate fertilizer (N-P-K 21-0-0) for commercial farming operations, shipped in 50kg bags or supersacks. Falls under HTS 3102.29.00.00 as other ammonium sulfate excluding double salts with nitrate. Ideal for sulfur-deficient soils in cotton production.
SulfurCoated Ammonium Sulfate Fertilizer
Polymer-sulfur coated ammonium sulfate granules for controlled-release nitrogen in turf and golf course applications. Classified under HTS 3102.29.00.00 as it remains fundamentally ammonium sulfate. Coating extends nutrient availability up to 120 days.
Neutral pH Ammonium Sulfate for Blueberries
Specially formulated ammonium sulfate with pH neutralizers for acid-loving crops like blueberries and azaleas. HTS 3102.29.00.00 applies as base material remains pure ammonium sulfate. Lowers soil pH while supplying sulfur nutrition.
Caprolactam Byproduct Ammonium Sulfate
High-purity ammonium sulfate recovered from nylon production as caprolactam byproduct, repurposed for fertilizer use. Falls under HTS 3102.29.00.00 when sold as agricultural fertilizer. Contains trace organic residuals but meets fertilizer specs.