''N''-(''n''-Butyl)thiophosphoric triamide (NBPT) is the

organophosphorus compound Organophosphorus compounds are organic compounds containing phosphorus. They are used primarily in pest control as an alternative to chlorinated hydrocarbons that persist in the environment. Some organophosphorus compounds are highly effective in ...

with the formula SP(NH₂)₂(NHC₄H₉). A white solid, NBPT is an "enhanced efficiency fertilizer", intended to limit the release of nitrogen-containing gases following fertilization. Regarding its chemical structure, the molecule features tetrahedral phosphorus bonded to sulfur and three amido groups.

Use

NBPT functions as an inhibitor of the enzyme urease. Urease, pervasive in soil microorganisms, converts urea into ammonia, which is susceptible to volatilization if produced faster than it can utilized by plants. Approximately 0.5% by weight NBPT is mixed with the urea.

References

{{DEFAULTSORT:Butyl)thiophosphoric triamide, N-(n- Thiophosphoryl compounds Soil improvers Fertilizers

Use

See also

References