Isobutylidene diurea

Isobutyl heptyl ketone (IBHK), 14 585 Isobutylidene diurea (IBDU)... 

Research on controlled-release nitrogen sources is in two broad categories the synthesis of nitrogen compounds with desired solubility characteristics and the application of protective coatings on soluble nitrogen fertilizers. Examples of synthesized compounds that dissolve slowly are urea-formaldehyde products, isobutylidene diurea, and crotonylidene diurea. However, the relatively high cost of these products tends to limit their consumption to specialty uses. 

BRN 1908981 Diureidoisobutane 1,1-Diureidisobutane EINECS 228-055-8 IBDU 1,1 -lsobutylidenebisurea Isobutyidiurea Isobutylenediurea Isobutylidene diurea N,N"-(lsobutylidene)diurea Isodur N,N -(2-Methyl-propylidene)bisurea Urea, 1,1 -isobutylidenedi- Urea, N,N"-(2-methylpropylidene)bis-. 

Other fertilizers that benefit agronomically from particle size control are some of the sparsely soluble slow-release nitrogen fertilizers such as urea-formaldehyde, isobutylidene diurea, and oxamide. The rate of dissolution, and hence the rate of nitrogen availability from these materials, has been shown to be dependent on particle size the larger the particles, the slower the release. 

Derivatives of urea have been used for animal feeding with the intention of retarding the release of ammonia. Biuret is less rapidly hydrolysed than urea but requires a period of several weeks for rumen microorganisms to adapt to it. However, neither biuret nor isobutylidene diurea (IBDU) nor urea tarch compounds have consistently proved superior to urea itself. 

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