Is NBPT the same as Agrotain's active ingredient?

Yes — NBPT (CAS 94317-64-3) is the active in Agrotain, and in related products such as Anvol and Limus (alongside other actives).

What dose is used on urea?

Typically about 0.05–0.1% w/w active (~500–1000 ppm); EU references cite roughly 0.04–0.10%.

Should I buy solid or liquid NBPT?

Solid technical NBPT suits melt-coating; solvent formulations suit spray-coating or UAN blending.

NBPT is hydrolytically sensitive — keep cool, dry and sealed. The solid is more stable than dilute solutions.

Is it approved for use?

It is an EU-approved urease inhibitor under the Fertilising Products Regulation (2019/1009), REACH-registered, and marketed in the US as a nitrogen stabiliser.

NBPT

CAS 94317-64-3 C₄H₁₄N₃PS

CAS number: 94317-64-3
EC number: 435-740-7
Formula: C₄H₁₄N₃PS
Molar mass: 167.21 g/mol
Appearance: Pure NBPT is a white to off-white crystalline/waxy solid (mp ~54–60 °C), but it is commonly supplied as an amber/pale-yellow liquid formulation (~20–80% NBPT in NMP or glycols) for urea coating.
HS code: ~2929.90 (indicative)

NBPT is the leading urease inhibitor for urea fertilizer — it slows urea hydrolysis to cut ammonia loss and lift nitrogen-use efficiency, and it is the active behind Agrotain-type products. Ehlinar sources technical solid and liquid nitrogen-stabiliser formulations matched to your coating process.

Applications

FertilizerUrease inhibitor coated on granular/prilled urea and UAN to cut ammonia loss

Enhanced-efficiency fertilizerBlends (often with DCD or DMPP) that raise nitrogen-use efficiency

Liquid N-stabilisersSolvent formulations for spray-coating urea or UAN blending

Fertilizer handlingUrea anti-caking co-formulation

ResearchUrease-inhibition reference standard

Grades & packaging

Supplied as a technical solid (≥97–99%), an analytical standard, or liquid nitrogen-stabiliser formulations (around 25% active); the solid suits melt-coating and the liquids suit spray-coating or UAN blending.

Solid: 25 kg fiber drums/bags, supersacks
Liquid: 200–250 L drums, 1000 L IBC, ISO tank

Also known as

N-(n-butyl) thiophosphoric triamide · nBTPT · BTPT · N-butylphosphorothioic triamide · active in Agrotain / Anvol / Limus

Frequently asked questions

Is NBPT the same as Agrotain's active ingredient?: Yes — NBPT (CAS 94317-64-3) is the active in Agrotain, and in related products such as Anvol and Limus (alongside other actives).
What dose is used on urea?: Typically about 0.05–0.1% w/w active (~500–1000 ppm); EU references cite roughly 0.04–0.10%.
Should I buy solid or liquid NBPT?: Solid technical NBPT suits melt-coating; solvent formulations suit spray-coating or UAN blending.
How stable is it?: NBPT is hydrolytically sensitive — keep cool, dry and sealed. The solid is more stable than dilute solutions.
Is it approved for use?: It is an EU-approved urease inhibitor under the Fertilising Products Regulation (2019/1009), REACH-registered, and marketed in the US as a nitrogen stabiliser.

Enquire about NBPT

Related products

Figures and identifiers here are compiled from public references and provided for general information; they are indicative, not a specification. See all products.