Propylene glycol
Propylene glycol (C₃H₈O₂), also may be called
(Propane-1,2-diol), is a synthetic liquid used in the production of many
industries. It is a viscous, colorless, almost odorless, sweet-tasting liquid.
Propylene glycol is mixed with water in different concentrations, to lower its
freezing point and keep it as a liquid for a longer period, and this is
important in some industries and uses. Propylene glycol can present some
environmental concerns.[1]
Propylene glycol uses
The following are the most
important industries in which propylene glycol is used:[2]
Pharmaceutical industry
Propylene glycol is used to
dissolve other substances, which are usually solid, without changing their
basic structure or composition, and is used to dilute and stabilize medicines,
and propylene glycol is used in the formation of various forms of medicines
including oral medicines such as capsules and tablets, or topical medicines
such as creams and gels Medicines are administered intravenously, i.e. by
injection.[2]
Cosmetic industry
Propylene glycol is a common
ingredient in cosmetics, personal care and skin products, and propylene glycol
is a versatile substance that performs many functions when added to cosmetic
products. The most important of these uses are:[2][3]
1. The manufacture of humectants, which are cosmetics and skin care products for their ability to
moisturize, and propylene glycol acts as a humectant by attracting moisture to
the skin.
2. Propylene glycol is used as a solvent. The compound is used to dissolve the substances in the product
formulation to make them mix and work together properly.
3. Emollient industry: Propylene glycol is used as an emollient because it forms a greasy
film on the skin and prevents water loss.
4. Viscosity control: Propylene glycol is used to reduce the thickness of cosmetic products
and cosmetics, improving the absorption quality of the products.
5. Porcelain glycol is often used with other chemicals
as a preservative in cosmetics and skin care products.
Food industry
Propylene glycol is used in the
production of many different foods, the most important of which are ice cream,
drinks, and various types of bread, due to its ability to retain moisture and
because of its sweet taste. Also as carriers of flavors, fragrances, vitamins
and food dyes.[3]
Anti-freeze
Propylene glycol is used as
antifreeze, and is a large part of aircraft dismantling equipment, and is used
to defrost airport runways, and because it is a non-toxic substance, it is also
often used as antifreeze in food processing systems and in water pipes.[2]
Electronic cigarettes
Along with vegetable glycerin,
propylene glycol is a major component in e-cigarette liquids. Propylene glycol
is converted into tiny droplets by e-cigarettes, and acts as a carrier for
nicotine and flavorings that are added to some types of these liquids.[2]
References
1. Will Klick, P.E (28/9/2020), "Ethylene
Glycol vs. Propylene Glycol: Differences & Uses",
superradiatorcoils, Retrieved 28/1/2022.
2. Tolu Ajiboye (23/9/2020), "What Is
Propylene Glycol?", verywellhealth, Retrieved 28/1/2022.
3. Evan Reboli (5/11/2020), "What
Are Some of the Uses of Propylene Glycol?", ingredi, Retrieved
28/1/2022.
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