Adding to boiling water

Other methods, alternative methods of producing lump-free CWS starch have been described. One employs heat-moisture treatment of a mixture of granular starch, a surfactant containing a fatty acid moiety and (optionally) a gum.214 A process for making a corn starch product giving a uniform viscous dispersion when added to boiling water employs heating a mixture of starch, surfactant and water, followed by microwave radiation.215 Compositions that gel at low solids concentrations were prepared by complexation of starches of moderate (20-30%) amylose content with emulsifiers.216... 

Bromo-2,8-dlmethylacetanlllde (2).3 N-Bromo-2,6-dlmethyiacetanillde 1 (1,0 g, 4.11 mmol) was added to boiling water. The resulting solid, after recrystateatlon from MeOH gave 2, mp 194-t95 C. 

Aminocitrazinic acid added to boiling water, then aq. K-hexacyanoferrate(III) added with stirring, after 5 min. Og passed with stirring through the boiling mixture indigoidin. Y 93%. Also isolation of the intermediate s. R. Kuhn, H. Bauer, and H.-J. Knackmuss, B. 98, 2139 (1965). 

The heat-transfer coefficient of most interest is that between the bed and a wall or tube. This heat-transfer coefficient, is made up of three components. To obtain the overall dense bed-to-boiling water heat-transfer coefficient, the additional resistances of the tube wall and inside-tube-waH-to-boiling-water must be added. Generally, the conductive heat transfer from particles to the surface, the convective heat transfer... 

Phosphorus(III) Oxide. Phosphoms(III) oxide [12440-00-5] the anhydride of phosphonic acid, is formed along with by-products such as phosphoms pentoxide and red phosphoms when phosphoms is burned with less than stoichiometric amounts of oxygen (62). Phosphoms(III) oxide is a poisonous, white, wax-like, crystalline material, which has a melting point of 23.8°C and a boiling point of 175.3°C. When added to hot water, phosphoms(III) oxide reacts violentiy and forms phosphine, phosphoric acid, and red phosphoms. Even in cold water, disproportionation maybe observed if the oxide is not well agitated, resulting in the formation of phosphoric acid and yellow or orange poorly defined polymeric lower oxides of phosphoms (LOOP). 

The potassium hydroxide may be added to the water in one pop. tion, but the resulting base solution should be allowed to cool to nearijr room temperature before adding to the reaction mixture. If the potaa sium hydroxide solution is cooled much below ambient temperature, the potassium hydroxide begins to separate hot potassium hydroxide solution could cause the tetrahydrofuran solution to boil. 

To this solution there is added in about 20 minutes a solution of diethylamine in CHCI3 while the temperature is kept below 35°C. The reacting mixture is heated to boiling, water formed during the reaction being distilled off thereby. After two hours the distillate contains no more water and the reaction is finished. Water is added to dissolve diethylamine hydrochloride formed during the reaction, and the chloroform layer containing the product is separated from the aqueous layer. The product may be purified by distillation it boils at 132°C at 0.2 mm pressure. It is converted to the citrate by reaction with citric acid. 

The graph in Figure 11-37 shows that adding heat to boiling water does not cause the temperature of the water to increase. Instead, the added energy is used to overcome intermolecular attractions as molecules leave the liquid phase and enter the gas phase. Other two-phase systems, such as an ice-water mixture, show similar behavior. 

Deaerated water is prepared as follows. A boiling stone is added to distilled water which is then boiled under reflux for at least 5 minutes it is cooled in ice to room temperature under an atmosphere of oxygen-free nitrogen. 

The heat which produces a rise in temperature when it enters a substance. In the generation of steam it is the amount of heat which has been added to the water to bring it up to boiling point. See Latent Heat. 

Make a colloidal sol of iron(m) hydroxide by adding aqueous iron(m) chloride to boiling water, or a colloidal sulfur sol by adding dilute aqueous sodium thiosulfate to hydrochloric acid. For both of these sols, it can be shown that the solid phase is not separated by filtration. 

In order to extract the morphine, the opium resin must first be prepared. This is achieved by adding the raw opium to boiling water, in which the alkaloids dissolve, while the insoluble material can be removed while it floats, or is filtered from the solution. To extract the morphine from the processed opium, the latter is placed in a large volume of boiling water and calcium hydroxide added. The water is cooled and the unwanted alkaloids precipitate, while the morphine and some codeine remain in solution. The solution is then re-heated and ammonium chloride (and sometimes ethanol and diethyl ether) added. When the pH reaches 8-9, the... 

Sodium (40 g. or 1.74 gram atoms) is added in small portions to 500 ml. of absolute ethanol, and 120 ml. of ethanol is distilled from the mixture. The resulting solution is cooled. To this is added 300 g. (1.52 moles) of bromoacetal [Org. Syntheses, 23, 8 (1943)], and, after the initial reaction has subsided, the mixture is heated on a water bath under a reflux condenser for 24 horn s. The reaction mixture is added to excess water, and the resulting mixture is extracted with several portions of ether. The combined ethereal extracts are dried and distilled to give 170 g. (75%) oi ethoxyacetal boiling at 58-63°/10 mm. This material is boiled under a reflux condenser with some sodium for 2 hours, after which it is redistilled. Most of the product boils at 57-58 °/ll nun. 

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