Apparatus for preparation

Owing to the corrosive action of bromine upon corks j-jg 7, l. and rubber stoppers, ground glass joints are recommended in this preparation. The apparatus, depicted in Fig. Ill, 37, 1, is particularly convenient for the preparation of bromides from alcohols. A double surface condenser is fitted into D and a round-bottomed flask is fitted on to the ground glass joint at C R is a three-way stopcock f which permits the removal of the contents of A without disconnecting the apparatus. For preparations of moderate size, A has a capacity of 60 or 100 ml. and a 250 or 500 ml. flask is attached at C. 

CHo.CH.OH.NHj. The apparatus for preparing the diy ammonia is shown in Fig. 52, The flask containing strong ammonia solution is heated by a small flame, when the gas is readily evolved and passes up the tow er, which is filled with soda-lime or quicklime. The etheieal solution is satuiated with the gas, and is then allow ed to stand for an hour., ... 

Fig. 1. Ejqjerimental apparatus for preparation of nano sized nitrogen doped Ti02 3. RESULTS AND DISCUSSION...

The diffusion system. Figure 8.31(B), is a useful and simple apparatus for preparing mixtures of volatile and moderately volatile vapors in a gas stream [388]. The method is based on the constant diffusion of a vapor from a tube of accurately known dimensions, producing a gas phase concentration described by equation (8.12). 

An apparatus for preparing moulding blanks. It is a development of the Barwell ram extruder which feeds through interchangeable dies to give the correct profile of blank, while an electronically operated cutter, working across the face of the die, cuts the blanks. Oil is admitted to the ram of the extruder in controlled quantities, set by a metering device, so that the compound is forced from the die in the correct amount to form each blank. 

An apparatus for producing pure nitric oxide is set up as follows. As in the apparatus for preparing hydrogen chloride, a filter flask (capacity 750 c.c.) is fitted with a dropping funnel, from which 42V-sulphuric acid is dropped into concentrated sodium nitrite solution, containing 70 g. of NaN02 in 150 c.c. of water. For this amount of nitrite 250 c.c. of the 42V-acid are required. The side tube of the flask leads first to a wash-bottle with concentrated sodium (or potassium) hydroxide, and then to one with concentrated sulphuric acid. By means of a short rubber tube a T-tube is attached to the second wash-bottle. One branch of the tube is connected to a carbon dioxide Kipp, the other to the reaction vessel. The rubber tube carries a screw clip so that, at the end of the experiment, the nitric oxide generator can be removed. 

MacDonald RC, MacDonald RI, Menco BPM, Takeshita K, Subbarao NK, Hu LR. Small-volume extrusion apparatus for preparation of large, unilamellar vesicles. Biochim Biophys Acta 1991 1061 297-303. 

Park, S., Kim, D.S., Chang, J., and Kim, J. (2001) Continuous process and apparatus for preparing inorganic materials employing microwave. US Patent Application 20010054549. 

Fig. 2.4. Circulation apparatus for preparation of polyesters. A water separator, B drying tube...

Figure 1. Apparatus for preparation of open ruthenocene and ruthenocene. ...

H. Erdmann s apparatus for preparing hydrogen chloride in a Kipp s apparatus is illustrated in Fig. 9. The middle bulb of the Kipp s apparatus contains pumice stone the upper and lower bulbs contain hydrochloric acid the upper end of Kipp s apparatus is closed by a rubber stopper fitted with a bulb containing potash lye. The separating funnel contains cone, sulphuric acid, and it leads to the inner bulb via a trap A containing sufficient mercury to cover the opening of the down-tube from the separatory funnel. Otherwise the diagram explains itself. A wash-bottle can be fitted to the exit tube B in the ordinary way. 

Fig. 58. Apparatus for preparing chlorine by reacting hydrogen chloride oxygen...

Fig. 61. Apparatus for preparing metal (nickel, cobalt, chromium) chlorides...

Fig. 62. Apparatus for preparing ammonia (a) and apparatus for purifying ammonium iodide by sublimation in an ammonia stream (6)...

Fig. 64. Apparatus for preparing iodine trichloride (a) and funnel with a filtering bottom for filtration in an inert atmosphere with cooling (b)...

Fig. 65. Apparatus for preparing hydrogen sulphide from its elements...

Fig. 70. Apparatuses for preparing thionyl chloride (a) and purifying it by distillation (6)...

Assemble an apparatus as shown in Fig. 71. Connect cooler 4 to a 100-ml round-bottomed flask with the aid of special adapter 1. Connect apparatuses for preparing dry chlorine (see Fig. 61) and... 

Fig. 72. Apparatus for preparing sulphuric acid by the contact process...

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