Stearyl alcohol: Difference between revisions

Latest revision as of 11:04, 15 February 2025

Stearyl Alcohol[edit]

Chemical structure of stearyl alcohol

Stearyl alcohol, also known as octadecanol, is a fatty alcohol with the chemical formula C__H__O. It is a white, waxy solid with a faint odor and is commonly used in the cosmetic and pharmaceutical industries as an emollient, emulsifier, and thickening agent.

Chemical Properties[edit]

Stearyl alcohol is a long-chain saturated fatty alcohol derived from stearic acid. It is insoluble in water but soluble in organic solvents such as ethanol and ether. The compound has a melting point of approximately 60°C (140°F) and a boiling point of 210°C (410°F) at 15 mmHg.

Production[edit]

Stearyl alcohol is typically produced through the hydrogenation of stearic acid, which is obtained from animal fats and vegetable oils. The process involves the reduction of the carboxylic acid group to an alcohol group, resulting in the formation of stearyl alcohol.

Uses[edit]

Stearyl alcohol is widely used in the formulation of cosmetics and personal care products such as creams, lotions, shampoos, and conditioners. It acts as an emollient, providing a smooth and soft texture to the skin and hair. Additionally, it serves as an emulsifier, helping to stabilize oil-in-water emulsions.

In the pharmaceutical industry, stearyl alcohol is used as a tablet binder and coating agent. It is also employed in the production of ointments and creams to enhance their consistency and stability.

Safety and Environmental Impact[edit]

Stearyl alcohol is considered safe for use in cosmetic and pharmaceutical applications. It is non-toxic and non-irritating to the skin. However, as with all chemical substances, it should be handled with care to avoid unnecessary exposure.

From an environmental perspective, stearyl alcohol is biodegradable and does not pose significant risks to aquatic life. It is derived from renewable resources, making it a more sustainable option compared to petroleum-based products.

Related Pages[edit]

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-{{png-image}}
+== Stearyl Alcohol ==
-'''Stearyl alcohol''', also known as '''octadecanol''' or '''1-octadecanol''', is a [[fatty alcohol]] with the chemical formula C<sub>18</sub>H<sub>38</sub>O. It is a [[saturated compound]] that is found in various natural sources, including [[coconut oil]] and [[palm oil]]. Stearyl alcohol is a white, waxy solid at room temperature and is practically insoluble in [[water]] but soluble in [[organic solvents]] such as [[ethanol]] and [[diethyl ether]].
-Stearyl alcohol is widely used in the [[cosmetic industry]], [[pharmaceutical industry]], and in the production of [[lubricants]]. In cosmetics, it acts as an [[emollient]], [[emulsifier]], and [[thickener]] in formulations of [[lotions]], [[creams]], [[hair conditioners]], and [[sunscreen products]]. Its emollient properties help to soften and smooth the skin, making it a valuable ingredient in skincare products.
+[[File:1-Octadecanol.svg|thumb|right|Chemical structure of stearyl alcohol]]
-In the pharmaceutical field, stearyl alcohol is used as an excipient, serving as a base for [[ointment]]s, as a thickening agent, and to help stabilize formulations. It is also employed in the manufacture of [[tablets]] as a lubricant to prevent the active ingredients from sticking to the equipment during the tablet compression process.
+'''Stearyl alcohol''', also known as '''octadecanol''', is a [[fatty alcohol]] with the chemical formula C__H__O. It is a white, waxy solid with a faint odor and is commonly used in the [[cosmetic]] and [[pharmaceutical]] industries as an [[emollient]], [[emulsifier]], and [[thickening agent]].
-Furthermore, stearyl alcohol finds application in the production of lubricants, where it is valued for its ability to reduce friction and wear on metal surfaces. It is also used in the manufacture of [[candles]], [[plastics]], and [[detergents]], showcasing its versatility across various industries.
+== Chemical Properties ==
-The production of stearyl alcohol typically involves the [[hydrogenation]] of [[stearic acid]], which is derived from fats and oils. This process converts the carboxylic acid group of stearic acid into an alcohol group, resulting in stearyl alcohol.
+Stearyl alcohol is a long-chain [[saturated fatty alcohol]] derived from [[stearic acid]]. It is insoluble in water but soluble in [[organic solvents]] such as [[ethanol]] and [[ether]]. The compound has a melting point of approximately 60°C (140°F) and a boiling point of 210°C (410°F) at 15 mmHg.
-Despite its widespread use, stearyl alcohol is considered to be relatively safe for most consumers. However, some individuals may experience [[allergic reactions]] or [[skin irritation]] from products containing stearyl alcohol, especially those with sensitive skin. It is always recommended to perform a patch test before using a new product containing this ingredient.
+== Production ==
-[[Category:Alcohols]]
+Stearyl alcohol is typically produced through the [[hydrogenation]] of [[stearic acid]], which is obtained from [[animal fats]] and [[vegetable oils]]. The process involves the reduction of the carboxylic acid group to an alcohol group, resulting in the formation of stearyl alcohol.
+== Uses ==
+Stearyl alcohol is widely used in the formulation of [[cosmetics]] and [[personal care products]] such as [[creams]], [[lotions]], [[shampoos]], and [[conditioners]]. It acts as an [[emollient]], providing a smooth and soft texture to the skin and hair. Additionally, it serves as an [[emulsifier]], helping to stabilize [[oil-in-water emulsions]].
+In the [[pharmaceutical industry]], stearyl alcohol is used as a [[tablet binder]] and [[coating agent]]. It is also employed in the production of [[ointments]] and [[creams]] to enhance their consistency and stability.
+== Safety and Environmental Impact ==
+Stearyl alcohol is considered safe for use in [[cosmetic]] and [[pharmaceutical]] applications. It is non-toxic and non-irritating to the skin. However, as with all chemical substances, it should be handled with care to avoid unnecessary exposure.
+From an environmental perspective, stearyl alcohol is biodegradable and does not pose significant risks to aquatic life. It is derived from renewable resources, making it a more sustainable option compared to [[petroleum-based]] products.
+== Related Pages ==
+* [[Fatty alcohol]]
+* [[Stearic acid]]
+* [[Emollient]]
+* [[Emulsifier]]
+* [[Cosmetic chemistry]]
+[[Category:Fatty alcohols]]
 [[Category:Cosmetic chemicals]]
 [[Category:Pharmaceutical excipients]]