The title compound crystallizes in the orthorhombic space group Pbca, In th
e crystal structure, the two H atoms of sulfuric acid protonate the carbony
l groups of two urea molecules. The H-O(urea) distances are 0.83(3) and 0.8
7(2)Angstrom, with O(urea)-O(sulfate) distances of 2.544(2) and 2.571(2)Ang
strom, respectively.