... Mol. wt. 290.3 M.f. C14H18N4O3 M.p. 140 (decomp.) V.p. <5.0 ?10-3 mPa (25 ) KOW logP ... = 1.37 Henry <4.0 ?10-4 (pH 5); <5.0 ... density 0.38 Solubility In water 3.6 (pH 5), 2.9 (pH 7), 1.9 (pH 9 ... in g/kg, 25 ). Stability Hydrolysis DT50 3.5 h (pH 5), 1.5 h (pH 7), <1 h (pH 9 ... water and stability at various pH values investigated by R. P. Singh & M. Chiba (ibid., 1985, 33, ...