Thiele Tube

The Thiele tube is a piece of laboratory equipment made of borosilicate 3.3 glass, used to determine the melting point of organic compounds.

Its main characteristics are:

Material: High-quality borosilicate 3.3 glass, known for its thermal and chemical resistance.

Typical Dimensions: Total length of approximately 150 mm (6 inches) and main tube diameter of approximately 25 mm (1 inch).

Design: It features a specific shape with a hollow glass side handle that allows convective circulation of the heated oil, ensuring a nearly uniform temperature throughout the oil bath.

Use: It is designed to contain and heat an oil bath in which a capillary tube containing the sample and a thermometer are immersed to observe the melting point.

Thermal Tolerances: Borosilicate 3.3 glass has specific heat tolerances, including a deformation point of -515°C, an annealing point of 565°C, and a softening point of 820°C.