Aziende Chimiche Riunite Angelini Francesco A.c.r.a.f. S.p.a.

Tecnicomar S.p.a.

Francesco De Vita

Mario Pinza

Tommaso Iacoangeli

Marcello Marchetti

Franca Segnalini

Method for preparing a compound comprising protonated glucosamine and Cl, Naand SOions, in which (a) glucosamine hydrochloride and a stoichiometric excess of sodium sulphate are placed in water, (b) the mixture obtained from the preceding step (a) is heated, (c) the mixture is cooled, and (d) the solid present in the said cooled mixture is recovered by filtration. Compound comprising protonated glucosamine and Cl, Naand SOions and having the X-ray diffraction diagram of FIG.

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Aprilia, Italy

Francesco De Vita