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Aluminum Tristearate is a type of aluminum salt of stearic acid, where three molecules of stearic acid are bonded to one molecule of aluminum.
Aluminum Tristearate appears as a white, waxy, or powdery solid, and is commonly used in a variety of industrial and commercial applications due to its unique chemical and physical properties.
Aluminum Tristearate serves as a stabilizing agent, a lubricant, and a thickening agent in several formulations.
CAS Number: 637-12-7
Molecular Formula: C54H105AlO6
Molecular Weight: 877.39
EINECS Number: 211-279-5
Synonyms:Aluminium stearate, 637-12-7, aluminium tristearate, Aluminum octadecanoate, ALUMINUM TRISTEARATE, Aluminum(III) stearate, Alugel 34TN, Metasap XX, Rofob 3, Tribasic aluminum stearate, Monoaluminum stearate, Octadecanoic acid, aluminum salt, Aluminum (III) stearate, Aluminum stearate (1:3), Aluminum stearate, tribasic, Stearic acid, aluminum salt, HSDB 5733, UNII-U6XF9NP8HM, U6XF9NP8HM, Aluminium tristearate, pure, EINECS 211-279-5, Dihydroxy(octanoato-O)aluminum, SA 1500, AI3-01515, aluminium trioctadecanoate, ALUGEL 30DF, ALUGEL 34TH, Aluminum, dihydroxy(octadecanoato-O)-, Octadecanoic acid, aluminum salt (3:1), THOMPSON'S WATER SEAL, DTXSID0027278, CHEBI:37867, ALUMINUM STEARATE (II), ALUMINUM STEARATE [II], ALUMINIUM STEARATE (EP MONOGRAPH), ALUMINIUM STEARATE [EP MONOGRAPH], KeratexKHG, aluminum;octadecanoate, aluminum trioctadecanoate, ALUMINUMTRISTEARATE, ALUMINUM STEARATE [MI], DTXCID407278, ALUMINUM STEARATE [VANDF], ALUMINUM TRISTEARATE [HSDB], AAA63712, ALUMINIUM STEARATE [WHO-DD], AKOS015901563, DB11290, NS00079596, Q447821, Stearic acid aluminium salt;Trioctadecanoic acid aluminum salt;Trisstearic acid aluminum salt;Tristearic acid aluminum;Tristearic acid aluminum salt;Aluminum octadecanoa;octadecanoicacid,aluminumsalt;rofob3
Aluminum Tristearate is an aluminium salt.
Aluminum Tristearate contains an octadecanoate.
Aluminum Tristearate is a chemical compound composed of aluminum and stearic acid, typically in a 1:3 molar ratio.
Aluminum Tristearate is often utilized in the production of cosmetics, personal care products, and pharmaceuticals, where it acts as an emulsifier to help mix oil and water-based ingredients.
Aluminum Tristearate is used in the manufacturing of paints, coatings, and lubricants, where it enhances the consistency and texture of products.
In certain industrial applications, it can also be used as a stabilizer in plastics and rubber.
Aluminum Tristearate is a salt of stearic acid and aluminium with the molecular formula Al(OH)2C18H35O2.
Also known as dihydroxyaluminium or dihydroxy(stearato)aluminium, it is used to form gels in the packaging of pharmaceuticals and in the preparation of colors for cosmetics.
While considered safe for use, extensive usage may result in aluminum accumulation.
Aluminium Stearate (C54H105AlO6) exists as white powder and is an aluminum salt of stearic acid.
In the pharmaceutical industry, it is used as an anticaking agent; colorant; emulsion stabilizer; and viscosity increasing agent.
According to the FDA, aluminum stearate is considered safe for general or specic, limited use in food.
Aluminium tristearate (C54H105AlO6) exists as white powder and is an aluminum salt of stearic acid.
In the pharmaceutical industry, it is used as an anticaking agent; colorant; emulsion stabilizer; and viscosity increasing agent.
According to the FDA, Aluminium tristearate is considered safe for general or specic, limited use in food.
Aluminum Tristearate is not classiable as a human carcinogen (cancer-causing agent).
Aluminum Tristearate, also referred to as Aluminium Soap, has a variety of applications and uses, primarily as a thickener and a hydrophobic agent.
Aluminum Tristearate in dierent applications, which can include plastics, oil and gas additives, food and beverage, and various others.
Aluminum Tristearate can be either vegetable or tallow based. Acme-Hardesty stocks the tallow based material, enabling us to complete your project quickly and eciently.
Aluminum Tristearate material, please inquire about availability and lead times.
Acme-Hardesty has been a leading provider of cost-eective solutions in the oleochemical industry for more than seven decades.
Aluminum Tristearate, innovation and performance has enabled us to develop many enduring strategic alliances with companies in industries such as Food & Beverage, Cosmetics, Cleaners & Detergents, Metal Working Fluids, Renewable Chemistries, Surfactants and Esters, and many more
Pigment Suspension and Thickening Agent in Paints, Enamels, Varnishes, Lacquers and Inks. Water Repellent for Leather, Rope and CementFood and Beverage: Aluminium tristearate is FDA Compliant for Food Contact as a Component of Adhesives, Resinous and Polymeric Coatings, Polymers, Adjuvants (Release Agents, Waxes and Dispersants) and as a Component of Paper or Paperboard in Contact with Aqueous and Fatty FoodsOil and Gas: Additive to Drilling Fluids to Release Gas BubblesPlastics: Lubricant in the Production of Polyamides and Thermosetting Plastics.
Aluminum Tristearate is a white, wax-like powder (metallic soap) that dissolves in mineral spirits or hot oil.
A small amount (2% or less) added to oil paint imparts a short, buttery consistency.
Aluminum Tristearate eliminates the separation of pigment and oil, thickens varnishes considerably. A concentrate of Aluminium tristearate and linseed oil can be prepared ahead of time and added to the paint whenever needed.
Aluminium tristearate is made via the precipitation process using high quality stearic acid and exhibits the following properties: Good gelling and thickening action, excellent water repellency, transparency and a synergistic eect with zinc stearate or calcium stearate.
The eects of metal soaps on pigments have been extensively studied.
Aluminium tristearate was found to coat the surface of pigment particles and helped prevent settling as well as reducing the amount of oil needed to wet the pigment.
The amount of Aluminium tristearate needed to coat pigments varied on a weight basis, but a solution of 2% by weight (weight of Aluminium tristearate/weight of oil) of Aluminium tristearate was more eective than 0.5% or 4% solutions in altering pigment surfaces.
The soaps coat the surface of the pigments and by steric eects keep the particles from aggregating (Pilpel 1963), which helps to keep the particles in suspension.
The Stearate salts, including Lithium Stearate, Aluminum Distearate, Aluminum Stearate, Aluminum Tristearate, Ammonium Stearate, Calcium Stearate, Magnesium Stearate, Potassium Stearate, Sodium Stearate, and Zinc Stearate are fine, white powders with a slight fatty odor.
In cosmetics and personal care products, Stearate salts are used mainly in the formulation of makeup products such as eyeliner, eyeshadow, mascara, lipsticks, blushers, face powders and foundations.
They are also used in fragrances, deodorants, and hair and skin care products.
Melting point: 103 °C
Boiling point: 250 ℃ [at 101 325 Pa]
Density: 1.01
Vapor pressure: 0 Pa at 25 ℃
Solubility: Practically insoluble in water and in anhydrous ethanol.
Form: Powder
Specific Gravity: 1.01
Color: White
Water Solubility: Soluble in alkali, glycol, chlorinated hydrocarbons, petroleum, benzene, turpentine oil, mineral oil, vegetable oil, mixture of benzene, toluene, and the three xylene isomers. Insoluble in water, ethanol, and ether.
Merck: 14,364
Exposure limits: ACGIH: TWA 1 mg/m³
Stability: Stable. Incompatible with strong oxidizing agents.
LogP: 22.69
Aluminium tristearate is employed in the production of waterproofing agents, such as those used in construction or automotive industries.
Its ability to form stable, heat-resistant films makes it particularly useful in various formulations requiring high-temperature stability.
Despite its wide range of uses, care should be taken during handling and processing, as it may pose risks to health and the environment when improperly managed.
The Stearate salts, including Lithium Stearate, Aluminum Distearate, Aluminum Stearate, Aluminium Tristearate, Ammonium Stearate, Calcium Stearate, Magnesium Stearate, Potassium Stearate, Sodium Stearate, and Zinc Stearate are ne, white powders with a slight fatty odor.
In cosmetics and personal care products, Stearate salts are used mainly in the formulation of makeup products such as eyeliner, eyeshadow, mascara, lipsticks, blushers, face powders and foundations.
They are also used in fragrances, deodorants, and hair and skin care products.
Aluminium tristearate dissolves in vegetable oils on heating and if a high enough concentration of the soap is used, gelling occurs on cooling.
In the usual practice of making paints, the Aluminium tristearate is ground with the pigment before the bulk of the oil is added.
In a series of experiments Gardner tested the eects of metal soaps on pigments.
Aluminium tristearate was found to coat the surface of pigment particles and helped prevent settling as well as reducing the amount of oil needed to wet the pigment.
The amount of Aluminium tristearate needed to coat pigments varied on a weight basis, but a solution of 2% by weight (wt stearate/wt oil) Aluminium tristearate was more eective than 0.5% or 4% solutions in altering the surface.
The soaps coat the surface of the pigments and by steric eects or electrical charge mechanisms keep the particles from aggregating (Pilpel 1966). This keeps the pigments in suspension.
With increasing amounts of Aluminium tristearate the oil pigment mixture becomes viscous, and by using an appropriate amount of Aluminium tristearate the paint can gel at a lower pigment concentration.
This can be used to create a "cheaper" paint since a smaller amount of a costly pigment needs to be used.
A signicant advantage of using stearates is that the oil and pigment do not separate greatly over long periods of time in the paint tube.
Aluminium tristearate is an organic compound which is a salt of stearic acid and aluminium.
It has the molecular formula Al(OH)2C18H35O2. It is also referred to as dihydroxy(octadecanoato-O-)aluminium or dihydroxy(stearato)aluminium.
Aluminium tristearate is used to form gels in the packaging of pharmaceuticals, and in the preparation of colors for cosmetics.
Aluminium tristearate is usually safe in commercial products, but aluminium may accumulate in the body.
The earliest and simplest oil paints were mixtures of pigments and drying oils.
Eventually driers, resins, llers, sometimes adulterants and suspension aids were also added.
Aluminium tristearate was one of the components introduced in the 20th century.
The gelling of oil solutions by aluminum soaps was known since at least the late 19th century but the use of Aluminium tristearate to alter the properties of paint did not come into use until much later.
Church in 1901 mentions the use of "linoleate or oleate of alumina" to prevent the "subsidence" of vermilion in tubes (Church 1901), a comment not found in the 1890 edition.
No further mention is made of this or similar materials until decades later even in Gardner's test protocols of 1911, the rst of a series of books which would become the industry standard for paint analysis.
Aluminium tristearate has been used to help suspend pigments in oil to prevent separation, to reduce the amount of oil needed to wet the pigment, and/or to increase the body of the paint by forming a gel with the oil thereby requiring less pigment.
Uses:
Aluminium tristearate is a saline form of stearic acid used as a thickener and emulsifier, and to regulate the stability and suspension of a cosmetic formulation.
Aluminium tristearate is used for waterproofing fabrics and for thickening lubricating oils.
It is involved in the preparation of polyamides and thermosetting plastics.
Aluminium tristearate is used as a waterproofing additive in cements and in light-sensitive photographic compositions.
It acts as a gelling agent for alkyd paints, as a defoamer for oil drilling fluids and as a retarder for polysulfide dental impression materials.
Further, it is used in greases, lubricants, cutting compounds, cosmetics and pharmaceuticals.
Aluminium tristearate serves as a flatting agent, as a defoaming agent in beet sugar and yeast processing.
In addition to this, it is used as a water-repellent soap for natural stone surfaces.
Waterproofing fabrics, ropes; in paint and varnish driers; thickening lubricating oils; in cements; in light-sensitive photographic compositions.
Aluminium tristearate is used in the following products: laboratory chemicals.
Aluminium tristearate has an industrial use resulting in manufacture of another substance (use of intermediates).
Aluminium tristearate is used in the following areas: formulation of mixtures and/or re-packaging.
Release to the environment of Aluminium tristearate can occur from industrial use: as an intermediate step in further manufacturing of another substance (use of intermediates) and as processing aid.
Aluminium tristearate is used in the following products: laboratory chemicals.
Aluminium tristearate has an industrial use resulting in manufacture of another substance (use of intermediates).
Aluminium tristearate is used in the following areas: formulation of mixtures and/or re-packaging.
Release to the environment of this substance can occur from industrial use: as an intermediate step in further manufacturing of another substance (use of intermediates) and as processing aid.
Aluminum tristearate has a variety of applications across different industries due to its unique properties, such as its ability to act as a stabilizer, emulsifier, and thickening agent.
In the cosmetics and personal care industries, it is commonly used as an emulsifier, helping to stabilize oil-in-water or water-in-oil emulsions, which are essential in the formulation of creams, lotions, and other skin care products.
This stabilizing property allows these products to maintain a consistent texture and ensures that the ingredients do not separate over time.
In the pharmaceutical industry, aluminum tristearate is utilized as a stabilizing agent in certain oral and topical medications, helping to improve the viscosity and consistency of ointments, gels, and creams.
Additionally, it is often found in the formulation of tablets, where it acts as a lubricant, facilitating the manufacturing process by ensuring the smooth release of tablets from molds and preventing sticking.
Aluminium tristearate is also widely used in the paint and coating industry, where it serves as a thickening agent and rheology modifier.
By enhancing the viscosity and flow properties of paints, coatings, and varnishes, aluminum tristearate helps improve the application and finish of these products.
Aluminium tristearate also contributes to the durability and weather resistance of coatings, making it an ideal additive for outdoor paints and protective coatings.
In the automotive and construction industries, aluminum tristearate plays a role in manufacturing waterproofing agents and lubricants.
Its ability to form stable, heat-resistant films makes it valuable in applications that require high-temperature resistance and long-lasting protection against moisture.
Aluminium tristearate is often incorporated into lubricants used in metalworking processes, where it helps reduce friction and wear, enhancing the performance and longevity of machinery.
Moreover, aluminum tristearate is used in the production of plastics and rubber, where it serves as a stabilizer to prevent degradation during processing and to improve the mechanical properties of the final products.
Its unique chemical properties make it a versatile and important additive in a wide range of industries.
In addition to its primary uses in cosmetics, pharmaceuticals, paints, and lubricants, aluminum tristearate finds applications in several other specialized areas.
For example, in the textile industry, it is used as a softening agent and a scouring agent for fabrics.
Aluminium tristearate helps enhance the feel and texture of fabrics, making them softer and more comfortable to wear.
Aluminium tristearate is also employed in the treatment of fibers and textiles, improving their resistance to staining, water absorption, and overall durability.
In plastics manufacturing, aluminum tristearate is utilized as a processing aid and stabilizer for a variety of polymer formulations.
By reducing friction between the particles, it aids in the extrusion and molding processes, improving the flow and consistency of the plastic materials.
This is particularly beneficial for producing high-quality plastic products that require precise molding, such as in the production of films, containers, and packaging materials.
The rubber industry also benefits from aluminum tristearate's lubricating properties, where it is used as a release agent during the molding and extrusion of rubber products.
Aluminium tristearate helps prevent the rubber from sticking to molds and machines, thus improving production efficiency and ensuring smooth and clean finishes on rubber goods like tires, seals, and gaskets.
In electronics manufacturing, aluminum tristearate plays a crucial role as a dielectric material in certain applications.
Due to its insulating properties, it is used in some electronic components where electrical insulation and heat resistance are required.
This makes it an important additive in the production of capacitors and other electronic devices that need to operate under high temperatures or in challenging environments.
Moreover, aluminum tristearate's water-repellent and moisture-resistant properties make it a valuable component in waterproofing agents and sealants.
In the construction industry, it is used to treat surfaces to make them resistant to water and environmental degradation, such as in the protection of masonry, concrete, and metal surfaces.
This application is especially valuable for protecting buildings and infrastructure exposed to harsh weather conditions.
Aluminium tristearate is sometimes used in the manufacture of candles and waxes, where it helps improve the texture, smoothness, and burn quality of the product.
Aluminium tristearate helps in creating a uniform appearance, enhances the stability of wax mixtures, and prevents the candles from melting too quickly.
Aluminium tristearate is a highly versatile compound, with a wide range of uses in various industries, thanks to its stabilizing, lubricating, and moisture-resistant properties.
Safety Profile:
Aluminium tristearate, like many chemical compounds, can present certain hazards under specific conditions.
Though it is considered to be of low toxicity, it is still important to handle it with care to avoid potential risks.
Aluminium tristearate is handled as a powder or in forms that can produce airborne particles, there is a risk of inhalation.
Prolonged or repeated exposure to airborne dust or fumes can irritate the respiratory system, leading to symptoms such as coughing, difficulty breathing, or wheezing.
In extreme cases, inhaling large amounts of dust may cause more serious respiratory issues, including lung damage, though this is unlikely under typical use conditions.
Aluminium tristearate is important to avoid inhaling any dust by wearing proper respiratory protection in workplaces where dust may be generated.
Contact with aluminum tristearate, particularly in its powder form, can cause irritation to the eyes and skin.
In case of eye contact, it may lead to redness, itching, and watering. Prolonged exposure to skin can result in dryness, itching, or irritation.
Individuals handling this compound should take precautions by wearing protective gloves and safety goggles to minimize exposure to the skin and eyes.
If contact occurs, Aluminium tristearate is advisable to rinse the affected area with water immediately to alleviate irritation.
