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Stearic acid

stearicoctadecanoic acidstearate
Stearin, or tristearin, or glyceryl tristearate is a triglyceride derived from three units of stearic acid.
The triglyceride derived from three molecules of stearic acid is called stearin.

Triglyceride

triglyceridestriacylglyceroltriacylglycerols
Stearin, or tristearin, or glyceryl tristearate is a triglyceride derived from three units of stearic acid.
Their names indicate the fatty acid: stearin derived from stearic acid, palmitin derived from palmitic acid, etc.

Palm stearin

This is the usage meant in an example such as palm stearin.
It is a stearin in the sense of stearins and oleins being the solid and liquid fractions respectively of fats and oils; not in the sense of glyceryl tristearate.

Candle

candlescandlemakerCandle wax
It is used as a hardening agent in the manufacture of candles and soap.
Candles were also made from stearin (initially manufactured from animal fats but now produced almost exclusively from palm waxes).

Michel Eugène Chevreul

ChevreulEugène ChevreulEugene Chevreul
These enabled him to elucidate the true nature of soap; he was also able to discover the composition of stearin, a white substance found in the solid parts of most animal and vegetable fats, and olein, the liquid part of any fat, and to isolate stearic and oleic acids, the names of which he invented.

Fatty acid

fatty acidsfree fatty acidsfree fatty acid
Most triglycerides are derived from at least two and more commonly three different fatty acids.

Polymorphism (materials science)

polymorphpolymorphspolymorphism
Like other triglycerides, stearin can crystallise in three polymorphs.

Fat

greasetotal fatdietary fat
Stearin is obtained from animal fats created as a byproduct of processing beef.

Beef

meatcattleFrozen Beef
Stearin is obtained from animal fats created as a byproduct of processing beef.

Cod liver oil

cod-liver oilfish-liver oilcod liver capsules
Stearin is a side product obtained during the extraction of cod liver oil removed during the chilling process at temperatures below −5 °C.

Sodium hydroxide

caustic sodaNaOHsodium
In the manufacture of soap, stearin is mixed with a sodium hydroxide solution in water.

Glycerol

glyceringlycerineE422
The following reaction gives glycerin and sodium stearate, the main ingredient in most soap:

Sodium stearate

The following reaction gives glycerin and sodium stearate, the main ingredient in most soap:

Soap

soapssoapmakingsoap making
It is used as a hardening agent in the manufacture of candles and soap.

History of candle making

candle makingcandlemakingBeeswax products
Candles were primarily made from tallow and beeswax in ancient times, but have been made from spermaceti, purified animal fats (stearin) and paraffin wax in recent centuries.

Lipid

lipidsglycerolipidfat
Several years later, Marcellin Berthelot, one of Pelouze's students, synthesized tristearin and tripalmitin by reaction of the analogous fatty acids with glycerin in the presence of ggaseous hydrogen chloride at high temperature.

Shoe polish

boot polishshoe shineBlacking
Poorly blended polishes are known to suffer from blooming, evidenced by the appearance of a white coating of stearin on the polish surface.

Carl Schmidt (chemist)

Carl SchmidtCarl Ernst Heinrich SchmidtSchmidt
He determined the typical crystallization patterns of many important biochemicals such as uric acid, oxalic acid and its salts, lactic acid, cholesterin, stearin, etc.

Meerschaum pipe

meerschaum
The crudely shaped masses thus prepared are turned and carved, smoothed with glass-paper, heated in wax or stearine, and finally polished with bone-ash.

Solid lipid nanoparticle

solid core lipid nano-particlesSolid lipid nanoparticles
The term lipid is used here in a broader sense and includes triglycerides (e.g. tristearin), diglycerides (e.g. glycerol bahenate), monoglycerides (e.g. glycerol monostearate), fatty acids (e.g. stearic acid), steroids (e.g. cholesterol), and waxes (e.g. cetyl palmitate).

Rallet

A. Rallet & Co.
In the early summer of 1843, Alphonse Rallet established a business at 47 Vyatskaya Street in Moscow to manufacture stearin candles.

J. Tidmarsh & Co

J. F. TidmarshJohn Francis TidmarshMoore & Tidmarsh
He was in 1880 the first to introduce stearine candles to South Australia.

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