N-Guanylurea

N-guanylurea dinitramide (commonly known as FOX-12) has low sensitivity and is an excellent candidate for insensitive munitions [72]. It is neither hygroscopic nor soluble in water. Its thermal stability is comparable to RDX and superior to that of ADN. The substitution of ammonium in dinitramide by an organic cation results in the change of combustion temperature and reactivity of the fuel. 

Free base N-guanylurea was prepared by dissolving N-guanylurea sulfate hydrate (0.5 mmol) in 3 ml water and neutralizing with aqueous NaOH (1 mmol). This material was added to a stirred suspension of the product from Step 3 dissolved in 3 ml of water, stirred 2 hours at 25 °C, further cooled to 5 °C, filtered, and the product isolated in 96% yield, mp >300°C (dec). H- and C-NMR and elemental analysis data supplied. 

N,]Sf -DicHoiocaibodiimide is useful ia preparation of photothermographic materials (101). Chlorinated guanylurea (av CI2 85%), prepared from dicyanamide, is useful as a bleach for synthetic fabrics (102). Chlorazodin, dichloroa2odicarbonarnidine, NH2C(=NC1) N=NC(=NC1) NH2, [502-98-7]... 

Helf (Ref 6) investigated ten hew materials as flash smoke suppressants in proplnts. Guanylurea Nitrate was the most promising compd with regard to physical chemical props, stability, and 0 balance. Guanylnitro Urea was unsuitable for proplnts contg NG. Carbohydrazide-N-carboxyamide Carbohy-drazide-N,N -dicarboxyamide showed desirable promise but depended on a special starting material. Ammonium Nitrourea, Diammonium -methylene-bis-(nitrosohydroxylamine) ... 

St CA 54, 15934(1960) (Differential thermal analysis and thermo gravimetry of some salts of Gu and related compounds) (Compares thermal stability, decon temp and 5-kg impact sensitivity of Picrates and Styph-natesof Hydrazine, aminoguanidine, N-tnethyl-guantdine, guanylurea, N-ethylguanidine and Gu)... 

N 51.06%, OB —53.5% (to /4C12) crysts, mp 157° sol in w insol in organics explodes on heating. Prepd by treating l-amino-3-guanylurea dihydrochioride with N2Os in chlf. Its expl props were not investigated Refs 1) Beil 3, 130 2) J. Thiele E. 

The chemist N. Latypov of the Swedish defense agency FOI developed and synthesized two other new energetic materials. These two compounds have become known as FOX-7 and FOX-12 (Fig. 1.9, a). FOX-7 or DADNE (diamino dinitro ethene) is the covalent molecule l,l-diamino-2,2-dinitro ethene (02N)2C=C(NH2)2. The synthesis of FOX-7 always includes several reaction steps. Two alternative ways to prepare FOX-7 are shown in Figure 1.9 (b). FOX-12 or GUDN (guanylurea dinitramide) is the dinitramide of guanylurea [H2N—C(=NH2)—NH—C(O)—NH2]+[N(N02)2]. ... 

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