N-(N-butyl) thiophosphoric triamide

NBPT Because of the high N content, urea is the main N fertilizer for agricultural applications. Under normal circumstances, urea in the soil soon be urease decomposes into ammonia and ammonia gas phase loss resulting in urea utilizing rate usually only 30% ~ 40%, and the fertilizer efficiency period shorter.

Urease inhibitor is a kind of substance that can inhibit the activity of soil urease, and it is a new technology which has been studied in urea or nitrogen compound fertilizer. Using soil urease inhibitor can effectively slow decomposition of urea into ammonia process, reduce soil NH4 + and NH3 concentration, soil fertility and crop fertilizer synchronization.

NBPT is the most effective inhibitor of soil urease. Positive butyl thiophosphoric triamide as inhibitors of soil urease, efficient, non-toxic, on soil without side effects, and in the soil in the natural decomposition of ammonia and ammonium phosphate. NBPT can increase the efficiency of urea N by 30%.

NBPT can by urea use 3-5 millionth of the amount of the proportion of flux of dissolved directly mixed with urea applied to the soil, can also according to a proper proportion through a certain preparation process growth effect of slow release compound fertilizer. This kind of long-term fertilizer containing NBPT is mainly used in the field crops and some growing vegetables, orchards, trees, corn, wheat, palm trees, etc..

N-(N-butyl)thiophosphoric triamide(NBPT)
CAS  94317-64-3
Purity:      >98%
Molecular weight 167.21
Formula C4H14N3PS
InChI InChI = 1 / C4H14N3PS/c1-the 2-3-4-7-8 (5, 6) 9 / h2-4 h2, H3 1, (H5, 5,6,7,9)

Main index 
Items  Reference Standard
Appearance White to off-white crystalline solids
Identification IR
Assay >98%
Melting rang 57-60°C
flash point  96°C
boiling point 277.4°C(760mmHg)
density 1.171g/cm3
water-solubility 4.3g/L at 25°C
Chloride ion ≤10ppm
Heavy Metals ≤20ppm
Loss on drying ≤1%