The present invention is directed at the synthesis and characterization of recrystallized HI-6 dimethylsulfate (DMS). The method can comprise dissolving HI-6 DMS in an alkyl-based glycol and adding an antisolvent to recrystallize HI-6 DMS or dissolving HI-6 DMS in methanol and adding dimethoxy ethane or dimethyl formamide as the antisolvent to recrystallize HI-6 DMS. The recrystallized HI-6 DMS indicates a resistance to moisture absorption and/or a DSC melting point onset (MP Onset) at least at or above 160.0? C.

The invention relates to novel crystalline forms of imiquimod formed with ferulic acid, acetic acid, coumaric acid, citric acid, or tartaric acid, to methods of making these cocrystals, and to compositions containing the cocrystals.

Realized is a solid substance concentration managing method which allows quick detection of an abnormality in a chemical reactor. The present invention is an invention of a solid substance concentration managing method of managing a concentration of a solid substance which is contained in a residue that is discharged in a reaction product gas processing step included in a trichlorosilane producing method, the solid substance concentration managing method including a concentration measuring step of measuring the concentration of the solid substance which is contained in an after-crystallization residue that is obtained by crystallizing part of aluminum chloride.

An apparatus for generating dialysate for dialysis comprising a dialysate outlet and a dialysate inlet and dialysate purifying means, wherein the purifying means comprise a cryopurifier for generating pure water, wherein the inlet of the cryopurifier is connected to the dialysate outlet and the outlet of the cryopurifier is connected to the dialysate inlet; and a method for reclaiming of fresh dialysate from ultrafiltrate and wasted dialysate extracted from a dialysis patient, comprising the following steps: preparing an ice slurry from the dialysate, wherein the ice slurry contains ice crystals and a liquid containing solutes; and separating the ice crystals from the liquid containing the solutes.

A wash column apparatus for the use in a suspension crystallization process for separating crystals from a crystal suspension mixture includes a cylindrical vessel including a piston with a piston head including a filter and a piston rod, movable in the cylindrical vessel, an inlet for supplying a crystal suspension mixture into the cylindrical vessel, an outlet for discharging mother liquor from the cylindrical vessel, an outlet for discharging crystals or crystal melt from the cylindrical vessel, a circulation conduit for circulating melt arranged outside the vessel, in communication with the wash chamber, a static grid element arranged in the wash chamber for restricting movement of the crystal bed and for directing the wash liquid entering into the cylindrical vessel from the circulation conduit so as to homogeneously distribute it over the entire cross-section of the wash column.

A method for separating one or more titanium (halo) alkoxides from a liquid mixture comprising titanium tetrachloride TiCl.sub.4 and at least one titanium (halo) alkoxide, said method comprising: agitating and cooling the liquid mixture until crystallization of at least one titanium (halo) alkoxide occurs in the liquid mixture; separating the crystallized titanium (halo) alkoxide from the mixture; and optionally, washing the separated, crystallized titanium (halo) alkoxide with a solvent.

A method for producing high purity D-psicose crystals having a purity of 98% (w/w) or more and a grain size of MA200 or more. The method includes: removing impurities from a D-psicose solution to obtain a purified D-psicose solution; concentrating the purified D-psicose solution; cooling the concentrated D-psicose solution to 30 C. to 40 C. through a heat exchanger; seed crystallizing the D-psicose solution at 30 C. to 40 C. to obtain a seed crystallized massecuite; and full-scale crystallizing the seed crystallized massecuite. The method can produce pure D-psicose crystals in a suitable form for industrial application through an economical crystallization process from the D-psicose solution without using organic solvents.

Demilitarization and disposal of HC smoke ordnance with recovery of constituents thereof as commodities entails mechanically removing from the ordnance a filler comprising hexachloroethane, zinc oxide and grained aluminum; heating the filler to a temperature above the sublimation temperature of hexachloroethane but safely below the temperature at which hexachloroethane chemically decomposes, and draining and collecting the dense hexachloroethane vapor; and conventionally separating the aluminum from the zinc oxide. Filler is supplied to and removed from a heating compartment from above; hexachloroethane drains via a lower portion of the heating compartment.

A method having the following steps: (1) providing a composition containing proteins and amino acids from mucous membranes of animals for slaughter, inorganic salts and water, wherein the sum of the mass of proteins and amino acids in the dry mass of said composition is 30 to 70 weight percent and the mass of inorganic salts in the dry mass of said composition is at least 7.5 weight percent; (2) filtering the composition to obtain a filtrate and a filter cake; (3) cooling the filtrate to a temperature in the range of 15? C. to 15? C. to form a precipitate; (4) separating the resulting precipitate to obtain the liquid phase as product. The disclosure further relates to the products of this method.

The present invention relates to a crystallisation method and a crystallisation arrangement for crystallising a substance from a solution, in particular for resolution of racemates.