What is heating mantle in chemistry?
Heating mantles are used for heating or tempering organic liquids placed in reaction kettles, round-bottomed flasks, or relevant reaction vessels required for the boiling, evaporation, distillation, or extraction process.
How do heating mantles work?
Heating mantles produce energy by converting AC voltage. Intense energy is consumed to generate a high degree of required heat. This can result in blowing of the socket or melting of the fuse. For this reason, one should never connect the mantle directly to a wall socket, instead, a transformer can be used.
What is a heating mantle made of?
Heating Mantles One of the most popular and safest methods to heat a reaction mixture in a synthetic organic, inorganic, or organometallic laboratory is a heating mantle, a resistively heated flexible fiberglass shell that conforms to the shape of the reaction flask.
Why use a heating mantle over a Bunsen burner?
Heating mantles are used in place of Bunsen burners or hot plates when the sample is an organic liquid. Organic liquids have a tendency to burst into flames when exposed to direct heat, or release flammable organic vapors are heavier than air, which can explode when contacting open flames or heating coils.
What is mantle in laboratory?
Generally speaking, a heating mantle is referred to as a device which is used in laboratories to heat or temper certain media in glass vessels. Due to the various sizes of the glass vessels, the exact amounts of liquids which are necessary can be heated.
What is heating apparatus in the laboratory?
Heating Devices. Most labs use at least one type of heating device, such as ovens, hot plates, heating mantles and tapes, oil baths, salt baths, sand baths, air baths, hot-tube furnaces, hot-air guns and microwave ovens.
What is an electric heating mantle?
A heating mantle, or isomantle, is a piece of laboratory equipment used to apply heat to containers, as an alternative to other forms of heated bath.
How hot do heating mantles get?
Temperatures of up to +450 °C (842 °F) are possible. The heat-up time is very short which enables laboratory professionals to start their work soon. Another advantage of using a heating mantle is that the heat is distributed very evenly, which means that the danger of hotspots on the flask is eliminated.
How does a heating mantle differ from a hot plate?
The capacity for heating mantles usually tops out at approximately 1,000mL, while hotplate stirrers can heat significantly larger volumes from 5,000mL (5L) up to about 20,000mL (20L). Because hotplates feature a flat top pan, they can be easier to clean. Hotplate stirrers can only be used with flat bottom glassware.
Who invented heating mantle?
A heating mantle is laboratory equipment used to heat the liquids in the flask using electricity. The first heating mantle was invented in 1972 by Michael Kort Rijk and Paul Leonard Johnson, two scientific researchers of England.
Why is a heating mantle better?
Because heating mantles offer more heat contact to the glassware, they heat up more quickly and more evenly less with tendency to generate hotspots. A general heating mantle temperature range can be anything from 0°C all the way up to 450°C – making them one of the hottest available laboratory heating devices.
Why is it important to have your heating mantle raised up on blocks or a metal ring underneath your distillation apparatus?
The hot plate and mantle should be lifted up on a jack. Raising your heat source allows you to quickly remove it in case of violent boiling or fire.