n-butylphosphorothioic triamide

N-Butylphosphorothioic triamide (CAS 94317-64-3) is commonly known as NBPT. Also marketed under the trade name Agrotain.

Where is n-butylphosphorothioic triamide used?

• Agriculture: urease inhibitor that slows the enzymatic breakdown of urea in soil
• Fertilizer manufacturing: active ingredient in enhanced-efficiency urea and UAN formulations
• Granular urea production: coating or blending additive that extends the window for nitrogen uptake by crops
• Livestock manure management: NBPT-treated slurry applications reduce ammonia emissions from fields
• Turf and specialty crop programs incorporate these treated fertilizers where precise nitrogen retention is critical.

Good to know: By blocking urease activity, it reduces nitrogen loss through ammonia volatilization, improving fertilizer efficiency. This allows manufacturers to deliver urease-inhibited products without reformulating the base nutrient.

Commercial specifications

• Typically sourced in bulk quantities suited to fertilizer manufacturing operations and large-scale industrial distribution networks