The user of E-cigarettes inhales a vapour. Hence, it is sometimes called as vaping. The liquid in e-cigarettes is called as e-liquid. The liquid is composed of nicotine, propylene glycol, glycerine and many other flavouring agents. In today’s international market, there are many brands and types of flavours available to users. It is used to give them the feel of smoking a particular type of flavour. Upon lighting of the cigarettes, the liquid gets vaporised. This liquid is known as eliquid or E-juice. However, not all e-liquids contain nicotine. Let us understand the components of e-liquids in detail:


Nicotine is nitrogen containing chemical compound. It is termed to be an alkaloid – a nitrogenous compound which is obtained from certain types of plants, for example tobacco plant. When consumed, it is believed to have some psychological actions on human beings. It is synthetically produced. Apart from being the major component in cigarettes, it is also an anti-herbivore chemical. Upon chewing tobacco, it is expected to release more nicotine into human body than smoking. It is a component, which creates anaddiction. It acts as a both stimulant and sedative. However, e-cigarettes are believed, to have less composition of nicotine than traditional cigarettes. Thus, it was first invented to reduce the addictive efforts of smoking.

Propylene Glycol:

Propylene Glycol is a non-toxic component of e-liquid. It is like a mineral oil, carrying flavouring agents in food products. Thus it gives the description of carbohydrates when used in foods. It comes in several grades such as an industrial grade PG, where it is used as a coolant and anti-freeze component, etc. Propylene Glycol is odourless and tasteless. It is a good solvent because it absorbs well. When mixed with vegetable glycerine and nicotine it blends smooth with them. It is also used to create an artificial smoke or fog. Thus it is also used, as fire fighting agent in wars. However, due to this quality of creating artificial harmless smoke, it is believed to be safe by Food and Drug Administration(FDA).

Vegetable Glycerine:

Glycerol or Vegetable glycerine is a transparent and odourless liquid. It is obtained as a by-product of plant oils. It has many valuable applications. Few of those are usage in cosmetic industry. This is also a very good solvent and it is used a substitute for alcohol when producing substances with botanical and herbal extracts. However, it is an advantage for people who want to get rid of alcohol addiction. It is obtained by the process of hydrolysis.

Flavouring agents:

There are many eliquid flavour causing agents in the E-cigarettes. They are used to create smells and tastes. However, there validity is not guaranteed by any department. Diacetyle 2,3-petadeione or diacetyle is used in the manufacture of many food flavourings. In the cartridge of e-cigarettes, they often contain taste of caramel, butterscotch, pina colada and strawberry. These are particularly tempting to children and teenagers.

Thus, e-liquids can be consumed in different forms from zero milligrams of nicotine to light (6mg) to high (24mg) of nicotine. These e-cigarettes are shipped all across the world and it is slowly gaining its popularity.

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Sara T. Loving

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