Method of preparing lacitol monohydrate and dihydrate
The invention relates to the new product lactitol monohydrate and to a method for the production of crystalline lactitol. The crystalline lactitol monohydrate can be obtained bij seeding an aqueous lactitol solution of a special concentration under special conditions causing the lactitol monohydrate to crystallize and recovering the product. From the mother liquor a further amount of lactitol dihydrate can be recovered. Crystalline lactitol dihydrate can be obtained using different special conditions. Lactitolmonohydrate can further be obtained by mixing one part bij weight of an aqueous lactitol solution of a suited concentration with 1 tot 3 parts bij weight of methanol or ethanol and cooling the mixture to 15° tot 25° C.
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(2008/06/13)
Crystalline anhydrous lactitol and a process for the preparation thereof as well as use thereof
The invention relates to a novel crystalline anhydrous lactitol, a process for the preparation thereof, and the use thereof. The novel crystalline anhydrous lactitol belongs to the monoclinic crystal system and has the unit cell constants: (a)=7.614 A; (b)=10.757 A; (c)=9.370 A and β=108.2°. Its melting point is between 149° C. and 152° C., water content below 0.5% and lactitol content more than 99%; it has a low hygroscopicity.
Get Best Price for81025-03-8(2S,3R,4R,5R)-4-{[(2R,3R,4S,5R,6S)-3,4,5,6-tetrahydroxytetrahydro-2H-pyran-2-yl]oxy}hexane-1,2,3,5,6-pentol dihydrate (non-preferred name)