Non solubility

Water-soluble compounds are naturally easily transported in the blood. Non-soluble compounds are usually transported bound to plasma proteins (albumins). This binding is reversible in most cases but may vary remarkably. The degree of protein binding may vary between 50% and 99%. The proportion of the free (unbound) compound in the circulation is the amount of the compound that can reach the tissues and thus the target organs. Very lipid-... 

Chiral amines and diamines are readily available substrates for the synthesis of ligands for transition metal-catalysed reactions since they can easily be transformed into chiral ureas and thioureas. Therefore, several groups have prepared chiral symmetrical ureas and thioureas, dissymmetrical ureas and thioureas, amino-urea and thiourea derivatives. Finally polyureas and non-soluble polythioureas were also prepared and tested as ligands for asymmetric catalysis. 

Applications at a temperature less than flashpoint and non soluble 10... 

Applications at temperature greater than 80 % of flashpoint and non soluble 12 Applications at temperature greater than flashpoint and non soluble 15... 

Singer A., Dultz S., Argaman E. Properties of the non-soluble fractions of suspended dust over the Dead Sea. Atmos. Environ. 2004 38 1745-1753. 

Smaller diameter probes reduce sample volumes from 500 to 600 pi typical with a 5 mm probe down to 120-160 pi with a 3 mm tube. By reducing the sample volume, the relative concentration of the sample can be correspondingly increased for non-solubility limited samples. This dramatically reduces data acquisition times when more abundant samples are available or sample quantity requirements when dealing with scarce samples. At present, the smallest commercially available NMR tubes have a diameter of 1.0 mm and allow the acquisition of heteronuclear shift correlation experiments on samples as small as 1 pg of material, for example in the case of the small drug molecule, ibu-profen [5]. In addition to conventional tube-based NMR probes, there are also a number of other types of small volume NMR probes and flow probes commercially available [6]. Here again, the primary application of these probes is the reduction of sample requirements to facilitate the structural characterization of mass limited samples. Overall, many probe options are available to optimize the NMR hardware configuration for the type and amount of sample, its solubility, the nucleus to be detected as well as the type and number of experiments to be run. 

Bounce Paper idea, non-soluble matrix holding the AI... 

Another method that can be used, if the above methods fail, is to dissolve the substance in some solvent, then add a second solvent mixable with the first solvent, but in which the substance is not soluble or sparingly soluble. The first solvent is then gradually removed and the substance crystallizes back out. If the first solvent is more volatile than the second, it can be evaporated out of the solution leaving the non-soluble solvent behind to crystallize the substance. If the first (dissolving) solution is not as volatile as the second solution, place the solution in a desiccator over some substance which absorbs the first solvent but not the second in this way water may be removed from a water-alcohol solution by caustic potash or quicklime. 

Hot Filtration. A device such as the one pictured in Figure 3 is easy to make out of tubing and is very effective. It will be required when substances crystallize before passing through the filter paper while filtering out non-soluble impurities. 

In the wet oxidation process, materials partially or completely dissolve into a homogeneous, condensed-phase mixture of oxygen and water, and chemical reactions between the material and oxygen take place in the bulk water phase. This condensed-phase makes wet oxidation an ideal process to transform materials which would otherwise be non-soluble in water to a harmless mixture of carbon dioxide and water. Since oxidation reactions are also exothermic, the high thermal mass of supercritical water makes this reaction medium better suited for thermal control, reactor stability, and heat dissipation. The purpose of this research was to establish a new method for selectively oxidizing waste hydrocarbons into new and reusable products. 

Pectase was found in plants, both in soluble and non soluble form. It was able to break down pectose into pectinic acid, and was attributed some similarity to diastase. Neither materials could be crystallized (Payen, 1874). Claude Bernard was the first to show lipolytic activity in pancreas in 1856 (Tauber, 1949), and Dobell (1869) found that an extract from pancreas hydrolyzed both fat and starch he gave a procedure for extraction and stabilization and named this preparation pancreatine . 

Salt was one of Paracelsus tria prima. Like the other principles and the four elements of the alchemists, salt as principle took its qualities as well as its name from the material bodies with the same properties. In a fire analysis, salt was to be found in the non-volatile residue and extracted from the non-soluble earth by water. This real salt demonstrated the more or less universal presence of the salt principle in all such bodies. The presence of SALT as principle accounted for the body s solidity and resistance to fire. In its material manifestation, it was recognized by its solubility and its saline taste. 

For Sr a significant increase of the distribution coefficient with increased surface to mass ratio is observed. Equilibrium is obtained within 6 hours. Evidently Sr is largely adsorbed by a surface reaction. A similar behaviour would be expected for Ra, although the formation of non-soluble RaSOi, would give a higher distribution coefficient (c.f. above). 

The maximum concentration of the divalent elements Sr and Ra would be limited by the precipitation of non-soluble sulfate (for Ra) or carbonate (for Sr). Species in solution would be and a small fraction of MSOi, and possibly also MHC03 . 

Our work aims at identifying, by subpicosecond broadband transient absorption and gain spectroscopy, the primary photochemical steps of the phototransduction process in Blepharisma japonicum, more specifically in the light-adapted form of the organism (blue cell) for which the photoactive pigment is oxyblepharismin [5] (see Scheme 1) and the associated macromolecule is a large non-soluble protein (200 kDa) [6]. 

Methanol is completely soluble in water unlike gasoline and diesel fuel which are essentially non-soluble in water. (Actually, gasoline and diesel fuel will absorb a very small amount of water, depending on the amount of aromatics present.) This could prove to be a problem in commerce since the current fuel distribution and storage systems for gasoline and diesel fuel are not water-tight. While water that enters a gasoline or diesel fuel system is a nuisance, it does not immediately... 

Olefins resulting from n-heptane cracking (step 1) are transformed through various reactions (oligomerization, cyclization, hydrogen transfer etc...) into soluble coke molecules sterically blocked in the cavities or at channel intersections (step 2), The same reactions transform soluble coke molecules into non soluble molecules (step 3) that overflow onto the outer surface of the zeolite crystallites. Non soluble coke molecules could also overflow in the mesopores created during zeolite... 

With HZSM5, Va does not depend on the adsorbate. At low coke content Vr/Va is close to 1, which shows that deactivation is not due to pore blockage. However Vr/Va decreases when the coke content increases. Thus for 7 wt% coke Vr/Va = 0.3, which means that coke blocks the access of the adsorbates, and probably of the reactant, to a volume much greater than the volume it occupies. It must be noted that the significant decrease of Vr/Va is observed as soon as bulky non soluble coke components appear. Deactivation results probably from a pore blockage due to these non soluble coke molecules which surround the zeolite crystallites. 

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