Glycoluril is an organic chemical composed of two cyclic urea groups joined across the same two-carbon chain.

It is a white powder that has been used in water treatment, in paints and coatings, and occasionally as a slow-release fertilizer.

Glycouril itself and derivatives of it are used as monomers for producing the macrocyclic cucurbiturils polymers, which serve as hosts to bind to various neutral and cationic species.

[1][2] Glycoluril is used as the starting material for tetrachloromoglycoluril[3] and tetrabromoglycoluril, which are used as biocides in water treatment, swimming pool disinfection, and as sludge control agents in papermaking.

Tetraacetylglycoluril can be used, but it not very common as a bleach activator for sodium percarbonate in solid detergent formulations because of its slow biodegradability.