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Melting point apparatus electrically heated

The electrically heated type of melting-point apparatus, which has certain advantages over the above types, is described on p. 6i, Fig 33-... [Pg.5]

The two principal types of melting point apparatus in common use are those in which heating of the capillary tube is by means of a heated liquid bath and those in which heating is carried out in, or on, an electrically-heated metal block. [Pg.237]

Fig. 4. Iseli melting point apparatus, with metal block and uree-point illumination. Only the side lights are used until sintering begins, and then the rear light is turned on to permit close observation of the formation of a clear melt. The apparatus is also built with an electrical heating element. Fig. 4. Iseli melting point apparatus, with metal block and uree-point illumination. Only the side lights are used until sintering begins, and then the rear light is turned on to permit close observation of the formation of a clear melt. The apparatus is also built with an electrical heating element.
There are two principal types of melting-point apparatus available the Thiele tube and commercially available, electrically heated instruments. The Thiele tube, shown in Figure 9.3, is the simpler device and was once widely used. It is a glass tube designed to contain a heating oil (mineral oil or silicone oil) and a thermometer to which a capillary tube containing the sample is attached. For best results... [Pg.663]

Place the microscale assembly in a standard melting-point apparatus (or a Thiele tube if an electrical apparatus is not available) to determine the boiling point. Heating is continued until a rapid and continuous stream of bubbles emerges from the inverted capillary. At this point, stop heating. Soon, the stream of bubbles slows down and stops. When the bubbles stop, the liquid enters the capillary tube. The moment at which the liquid enters the capillary tube corresponds to the boiling point of fhe liquid, and fhe femperafure is recorded. [Pg.732]

Use a liquid paraffin bath or electrical heating apparatus to measure the melting point of an unknown compound and decide whether it is a pure sample. [Pg.263]

The melting points of pure samples of the following compounds are determined using a melting point bath or an electrically heated apparatus, in the manner detailed above. The correct melting points of the pure substances are given in parentheses. [Pg.241]

See other pages where Melting point apparatus electrically heated is mentioned: [Pg.61]    [Pg.61]    [Pg.83]    [Pg.1028]    [Pg.83]    [Pg.1028]    [Pg.83]    [Pg.1028]    [Pg.1179]    [Pg.17]    [Pg.239]    [Pg.240]    [Pg.239]    [Pg.240]    [Pg.3]    [Pg.83]    [Pg.1028]    [Pg.83]    [Pg.1028]    [Pg.40]    [Pg.8]    [Pg.79]    [Pg.82]    [Pg.463]    [Pg.118]    [Pg.106]    [Pg.253]    [Pg.463]    [Pg.1215]    [Pg.813]    [Pg.79]    [Pg.82]    [Pg.463]    [Pg.722]    [Pg.118]    [Pg.244]    [Pg.244]   
See also in sourсe #XX -- [ Pg.81 , Pg.82 ]

See also in sourсe #XX -- [ Pg.81 , Pg.82 ]

See also in sourсe #XX -- [ Pg.81 , Pg.82 ]

See also in sourсe #XX -- [ Pg.81 , Pg.82 ]



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