Glycerin is a viscous, colorless, and sweet chemical substance derived either from biodiesel synthesis
or soap production. Its IUPAC nomenclature is propan-1,2,3-triol and is also known as glycerol or glycol
alcohol. Glycerin is etymologically derived from the Greek word glykys meaning sweet, as characterized
by the substance’s taste. K.W. Scheele first discovered this organic alcohol in 1779 as an olive oil
saponification by-product. Alfred Nobel later discovered its crucial role for dynamite production which
made it a vital product during World War I and II.
Glycerin has a boiling point of 290°C and melting point of 20°C. It is miscible in water, alcohol, and
acetone while immiscible in other oils, ether, and benzene. Glycerin has a CAS number of 56-81-5 and a
chemical formula of (HOCH2)2CHOH.
This viscous, clear, and sweet liquid is utilized in different pharmaceutical, cooking, and industrial
applications. Its non-toxicity and versatility makes it a perfect stabilizer and humectant for like soaps,
lotions, food, beverage, and syrups. Handcrafted soaps already contain substantial amounts of glycerin,
though it could be added in other commercial varieties to add a smooth finish with extra moisture.
Highly glycerinated soaps are often clear and contains around 15-20% pure glycerin. Aside from their
emollient properties, it helps skin maintain its natural pH level and water balance. Glycerin soap is also a
great face bar because it retains moisture on the skin without clogging the pores. It clears dead skin, oil,
and other skin contaminants and may also aid in healing certain skin diseases like psoriasis and eczema.
Shampoo containing glycerin is very gentle and moisturizing on the scalp. This formulation is great in
preventing dryness, dandruff, and hair fall. It cleans without leaving a sticky residue or coating on your
hair unlike other commercial varieties. Glycerin shampoos don’t contain sulfate derivatives like sodium
lauryl or sodium laureth sulfate which increase lather but strips hair of color and nutrients. Glycerin
shampoo is also good for sensitive skin because it is hypoallergenic (as long as no scents or enhancers
are added).
Proper handling and storage: Wash hands thoroughly after handling the product. Use glycerin with
adequate ventilation. Avoid contact with eyes, skin, and clothes. Store in a tightly-lidded container;
place in a cool, dry, and well-ventilated area away from incompatible substances. No other special
precautions are indicated.
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