Gelatin homogeneity

The precipitated metallic hydroxides or hydrated oxides are gelatinous in character, and they tend to be contaminated with anions by adsorption and occlusion, and sometimes with basic salts. The values presented in Table 11.2 suggest that many separations should be possible by fractional precipitation of the hydroxides, but such separations are not always practical owing to high local concentrations of base when the solution is treated with alkali. Such unequal concentrations of base result in regions of high local pH and lead to the precipitation of more soluble hydroxides, which may be occluded in the desired precipitate. Slow, or preferably homogeneous, precipitation overcomes this difficulty, and much sharper separations may be achieved. 

Determination of iron as iron (III) oxide by initial formation of basic iron (III) formate Discussion. The precipitation of iron as iron(III) hydroxide by ammonia solution yields a gelatinous precipitate which is rather difficult to wash and to filter. Iron(III) can, however, be precipitated from homogeneous solution as a dense basic formate by the urea hydrolysis method. The precipitate obtained is more readily filtered and washed and adsorbs fewer impurities than that formed by other hydrolytic procedures. Ignition yields iron(III) oxide. 

When each solution became an homogeneous viscous fluid, they were combined and added dropwise via an addition funnel to calcium chloride (670 mL of 10% (w/v)). The droplets formed gelatinous beads upon impact with the salt solution. The size and shape of the beads may be adjusted by the rate of addition. 

Due to the fact that it easily gelatinizes NC forming a thick homogeneous mass, it could be recommended as an expl plasticizer for NC in prepn of smokeless propints, if its stability were more satisfactoty... 

It is the ability of a substance, such as NC, PETN, Centralites, etc to bond a liquid expl (such as NG or NGc) or a nonexpl solvent (such as acetone or ether/alc) to a homogeneous or nearly homogeneous gelatinous or semigelatirious mass... 

Fermented milk products exhibit thixotropic rheological properties, i.e. the viscosity (resistance to flow) decreases as the rate of shear increases a typical relationship is shown in Figure 10.33. The rheological properties are major parameters of quality and are controlled by varying the total solids content of the milk, the heat treatment and homogenization of the milk and the use of hydrocolloids, e.g. gelatin or carageenan. 

Finely ground nitrocellulose of low viscosity was used. It was impregnated with DGDN under water in the usual way. After dehydration in a centrifuge to a moisture content of 18-22%, the blend was stirred into molten TNT. The vat was evacuated to evaporate the water and to produce a homogeneously gelatinized grain. 

E. vonHolt, Gerp 1147159(1963) St CA 59, 4970(1963) [Homogeneous solid expls prepd by gelatinizing either highly nitrated hydrocarbons with a small amt of polyalcohol... 

This new expl forms a homogeneous, stable emulsion with NC. Desseigne patented this compd as an expl St gelatinizing agent (Ref 3)... 

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