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Send EmailAluminum Stearate, Aluminium Monostearate, Aluminium Distearate, Aluminium Tristearate, 7047-84-9, 300-92-5, 637-12-7, 10124-27-3
Aluminium Stearates – Comparative Properties
| Type | Chemical Formula | CAS No. | Appearance | Solubility | Gel / Viscosity | Hydrophobicity | Typical Applications |
|---|---|---|---|---|---|---|---|
| Aluminium Monostearate | C₁₈H₃₅O₂Al | 7047-84-9 | White, waxy powder | Insoluble in water; soluble in hot oils | Strong gel-former, heavy body | High | Paints, inks, greases, waxes; pharmaceutical excipient; controlled release |
| Aluminium Distearate | C₃₆H₇₂AlO₅ | 300-92-5 | White, waxy powder | Soluble in mineral spirit, hot oils | Good gel-former, medium viscosity | Strong | Paints, inks, greases, plastics, cement; waterproofing; lubricants |
| Aluminium Tristearate | C₅₄H₁₀₅AlO₆ | 637-12-7 | White, waxy powder (denser) | Higher solubility in hydrocarbons; insoluble in water/alcohol | Very strong gel, high viscosity | Very strong | Construction chemicals, coatings, waterproofing, high-performance lubricants |
| General Aluminium Stearate | — | 10124-27-3 | Commercial blend | Non-stoichiometric mixtures | Properties vary depending on mono/di/tri ratio | Strong | Mixed industrial uses; commercial formulations |
Key Insights
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Monostearate (7047-84-9): Heavy gel, used in paints, inks, greases, waxes, pharma.
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Distearate (300-92-5): Versatile, medium viscosity, widely used in paints, plastics, cement, lubricants.
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Tristearate (637-12-7): Strongest hydrophobic and gel properties, preferred in construction and waterproofing.
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General stearate (10124-27-3): Commercial blends, non-stoichiometric, variable properties.
Aluminum Distearate
CAS: 300-92-5
EINECS: 206-101-8
Molecular Formula: C₃₆H₇₁AlO₅
Molar Mass: 610.93 g/mol
Basic Properties
| Property | Value |
|---|---|
| Melting Point | 147–157 °C |
| Boiling Point | 673.64 °C |
| Flash Point | 162.4 °C |
| Vapor Pressure | 0 Pa @ 25 °C |
| Density | 1.009 g/cm³ |
| Appearance | White or pale yellow powder |
| Storage Conditions | Inert atmosphere, room temperature |
Physical & Chemical Characteristics
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Insoluble in water
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Soluble in ethanol, benzene, turpentine oil, mineral oil, and alkali
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Decomposes under strong acid with stearic acid and aluminum salts
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Forms colloids with aromatic and aliphatic hydrocarbons
Synonyms & Variants
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ALUMINUM DISTEARATE
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Aluminum trioctadecanoate
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Hydroxyaluminum distearate
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Aluminumhydroxydistearate
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Aluminium distearate (light)
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Hydroxybis(octadecanoato-O)-aluminum
Main Applications
| Sector / Sektör | Function / Fonksiyon |
|---|---|
| Plastics | Non-toxic heat stabilizer for PVC, lubricant |
| Paint & Ink | Thickener, anti-settling agent, gloss enhancer |
| Cosmetics | Emulsifier, thickener, water-repellent agent |
| Construction | Waterproofing additive, rust inhibitor |
| Metalworking | Surface protector, anti-corrosion agent |
| Oil Drilling | Defoamer in mud systems |
| Detergents & Soaps | Auxiliary agent in soap formulations |
Sectoral Compatibility Table
| Sector | Compatibility | Notes |
|---|---|---|
| Cosmetics | High | Emulsifier, thickener, hydrophobic agent |
| Paint & Ink | High | Gloss, viscosity, anti-settling |
| Plastics (PVC) | High | Heat stabilizer, lubricant |
| Construction Chemicals | Moderate | Waterproofing, rust prevention |
| Metal Processing | Moderate | Surface protection, anti-corrosion |
| Oil & Drilling | Moderate | Defoamer, stabilizer |
| Pharmaceuticals | Low | Limited use, not preferred |
Production Overview
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Reaction of stearic acid with aluminum salts (e.g. aluminum isopropoxide or sulfate)
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Conducted in anhydrous medium with controlled temperature and pH
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Final product is precipitated, filtered, dried, and milled
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Alternative methods: direct saponification or melt reaction with aluminum oxide
Aluminium Distearate (Light) / Alüminyum Di-Sterat
CAS: 300-92-5
EINECS: 206-101-8
Molecular Formula: C₃₆H₇₁AlO₅
Molar Mass: 610.93 g/mol
Names & Identifiers / İsimler ve Tanımlar
| Tanım / Identifier | Değer / Value |
|---|---|
| İsim / Name | Aluminium distearate (light) |
| CAS No | 300-92-5 |
| EINECS No | 206-101-8 |
| InChI | InChI=1/2C18H36O2.Al.H2O/c2*1-2-3-... |
| Synonyms / Eşanlamlılar | ALUMINUM DISTEARATE, aluminiumdistearate, ALUMINIUM STEARATE, DI, aluminum trioctadecanoate, aluminumhydroxydistearate, Hydroxyaluminum distearate, hydroxybis(octadecanoato-O)-aluminum, etc. |
Basic Physico-Chemical Properties / Temel Fiziksel-Kimyasal Özellikler
| Özellik / Property | Değer / Value |
|---|---|
| Melting Point | 147–157 °C |
| Boiling Point | 673.64 °C |
| Flash Point | 162.4 °C |
| Vapor Pressure | 0 Pa @ 25 °C |
| Density | 1.009 g/cm³ |
| Appearance | White or bright yellow powder |
| Storage Conditions | Inert atmosphere, room temperature |
Physical & Chemical Characteristics
Fiziksel ve Kimyasal Özellikler
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Water Insolubility: Insoluble in water
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Solubility: Soluble in ethanol, benzene, turpentine, mineral oil, and alkali
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Decomposition: Under heat or strong acid, decomposes into stearic acid and aluminum salts
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Colloid Formation: Forms colloids with aromatic and aliphatic hydrocarbons
Production Method / Üretim Yöntemi
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Step 1: Molten stearic acid is mixed with excess sodium hydroxide to form a soap solution
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Step 2: Dilute aluminum sulfate solution is injected in the presence of alkali
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Step 3: Double decomposition reaction occurs
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Step 4: Product is dehydrated, washed, centrifuged, and dried
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Raw Material Consumption (per ton):
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Stearic Acid: 860 kg
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Aluminum Sulfate (95%): 630 kg
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Solid Alkali (95%): 210 kg
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Applications / Kullanım Alanları
| Sektör / Sector | Fonksiyon / Function |
|---|---|
| Plastics (PVC) | Non-toxic heat stabilizer, lubricant |
| Paint & Ink | Thickener, anti-precipitation, gloss enhancer |
| Cosmetics | Emulsifier, thickener, water-repellent |
| Construction Materials | Waterproofing agent, rust inhibitor |
| Metal Tools | Anti-corrosion agent |
| Oil Drilling | Defoamer in drilling fluids |
| Fabrics & Detergents | Waterproofing, thickening agent |
Risk & Safety Information / Risk ve Güvenlik Bilgileri
| Tanım / Description | Detay / Detail |
|---|---|
| Hazard Symbol | Xi – Irritant |
| Risk Code | R36 – Irritating to eyes |
| Safety Instructions | S22 – Do not breathe dust |
S24/25 – Avoid contact with skin and eyes
S26 – In case of eye contact, rinse with water and seek medical advice
RTECS No | BD0962000
Flammability | Smoke formation upon thermal decomposition
Fire Extinguishing Agents | Dry powder, foam, sand, CO₂, mist water
Storage & Transport | Ventilated warehouse, low temperature, avoid acids/alkalis
Occupational Limit | TWA: 10 mg Al/m³
Sectoral Compatibility Table / Sektörel Uyumluluk Tablosu
| Sector / Sektör | Compatibility / Uyumluluk | Notes / Açıklama |
|---|---|---|
| Cosmetics | High | Emulsifier, thickener, hydrophobic agent |
| Paint & Ink | High | Gloss, viscosity, anti-settling |
| Plastics (PVC) | High | Heat stabilizer, lubricant |
| Construction | Moderate | Waterproofing, rust prevention |
| Metal Processing | Moderate | Surface protection, anti-corrosion |
| Oil & Drilling | Moderate | Defoamer, stabilizer |
| Pharmaceuticals | Low | Limited use, not preferre |
Aluminium Distearate – Paint & Ink Sector Suitability Table
| Application | Function | Suitability | Notes |
|---|---|---|---|
| Thickener / Rheology Modifier | Increases viscosity, provides body to paints and inks | High | Prevents dripping/sagging, ensures smooth application |
| Pigment Stabilizer | Prevents pigment separation and oil bleeding | High | Improves color consistency and dispersion stability |
| Water-Repellent Agent | Provides hydrophobic properties to coatings | High | Enhances durability against moisture, used in outdoor paints and coatings |
| Gloss & Surface Control | Improves leveling and smoothness of varnishes | Medium | Ensures glossy, uniform finish |
| Lubricant Role in Inks | Reduces friction in printing processes | Medium | Improves printability, reduces wear on machinery |
| Durability Enhancer | Extends shelf life and performance of formulations | High | Critical in long-term storage of inks and paints |
Aluminium Distearate – Plastics Sector Suitability Table
| Application | Function | Suitability | Notes |
|---|---|---|---|
| Lubricant / Processing Aid | Improves flow and mold release in plastic processing | High | Reduces friction during extrusion and injection molding |
| Stabilizer | Enhances thermal and chemical stability of polymers | High | Prevents degradation during high-temperature processing |
| Thickener / Rheology Modifier | Provides viscosity control in polymer formulations | Medium | Used in specialty plastics and composites |
| Water-Repellent Agent | Adds hydrophobic properties to plastic surfaces | High | Improves moisture resistance in packaging and outdoor applications |
| Pigment Dispersant | Ensures uniform distribution of fillers and pigments | High | Critical for color consistency and mechanical properties |
| Durability Enhancer | Extends shelf life and mechanical strength of plastic products | High | Used in coatings, films, and molded parts |
| Compatibility Agent | Improves bonding between polymer matrix and additives | Medium | Supports composite and reinforced plastics |
Aluminium Distearate – Cosmetics Sector Suitability Table
| Application | Function | Suitability | Notes |
|---|---|---|---|
| Thickener / Rheology Modifier | Provides viscosity and texture control in creams, lotions, and ointments | High | Ensures stable, smooth formulations |
| Emulsifier / Stabilizer | Balances oil and water phases, prevents separation | High | Critical in emulsions and long-lasting cosmetic products |
| Water-Repellent Agent | Adds hydrophobic properties to formulations | High | Used in waterproof makeup and sunscreens |
| Pigment Binder | Improves pigment dispersion and adhesion | High | Essential in lipsticks, foundations, and color cosmetics |
| Texture Enhancer | Provides creamy, smooth feel | High | Improves sensory profile and consumer acceptance |
| Stability Enhancer | Extends shelf life and prevents phase separation | High | Important for premium cosmetic formulations |
| Safety Profile | Generally safe at cosmetic concentrations | Controlled | High levels may cause mild irritation; regulated by cosmetic standards |
Aluminium Distearate – Construction Chemicals Sector Suitability Table
| Application | Function | Suitability | Notes |
|---|---|---|---|
| Water-Repellent Agent | Provides hydrophobic properties to cement, mortar, and plaster | High | Improves resistance against moisture and efflorescence |
| Thickener / Rheology Modifier | Controls viscosity and workability in construction formulations | High | Ensures smooth application of plasters, adhesives, and coatings |
| Stabilizer | Prevents phase separation in polymer-modified mortars and coatings | High | Enhances shelf life and performance |
| Pigment Dispersant | Ensures uniform distribution of pigments in decorative coatings | Medium | Improves color consistency in architectural finishes |
| Durability Enhancer | Extends mechanical strength and weather resistance of construction materials | High | Used in exterior coatings and waterproofing systems |
| Lubricant Role | Improves processing and mixing of dry powders | Medium | Reduces friction during mixing and application |
| Compatibility Agent | Enhances bonding between polymer additives and mineral matrix | Medium | Supports composite mortars and reinforced construction materials |
Aluminium Distearate – Metalworking Sector Suitability Table
| Application | Function | Suitability | Notes |
|---|---|---|---|
| Lubricant / Thickener | Provides thickening and lubrication in greases and metalworking fluids | High | Improves film strength and reduces wear during machining |
| Corrosion Inhibitor | Protects metal surfaces against oxidation and rust | High | Used in cutting oils and protective coatings |
| Stabilizer | Enhances stability of emulsions and formulations | High | Prevents phase separation in metalworking fluids |
| Water-Repellent Agent | Adds hydrophobic properties to protective coatings | High | Improves resistance against moisture and humidity |
| Processing Aid | Improves flow and consistency of lubricants | Medium | Supports extrusion and rolling processes |
| Durability Enhancer | Extends service life of lubricants and coatings | High | Critical in high-load and high-temperature applications |
| Pigment Dispersant | Ensures uniform distribution in anti-corrosion paints/coatings | Medium | Used in protective paints for machinery and tools |
Aluminium Distearate – Oil & Drilling Sector Suitability Table
| Application | Function | Suitability | Notes |
|---|---|---|---|
| Drilling Fluid Additive | Improves viscosity and suspension properties of drilling muds | High | Ensures cuttings are carried to the surface efficiently |
| Lubricant / Thickener | Provides lubrication and thickening in oil-based drilling fluids | High | Reduces friction and wear on drilling equipment |
| Water-Repellent Agent | Adds hydrophobic properties to drilling formulations | High | Improves stability in oil-based muds, prevents water intrusion |
| Stabilizer | Enhances emulsion stability in drilling fluids | High | Prevents phase separation under high-pressure/high-temperature conditions |
| Corrosion Protection | Protects drilling tools and pipes against oxidation and rust | Medium | Used in combination with other inhibitors |
| Durability Enhancer | Extends service life of drilling fluids and lubricants | High | Critical in deep drilling and offshore operations |
| Processing Aid | Improves mixing and handling of drilling mud formulations | Medium | Supports uniform dispersion of additives |
Aluminium Distearate – Pharmaceuticals Sector Suitability Table
| Application | Function | Suitability | Notes |
|---|---|---|---|
| Thickener / Rheology Modifier | Provides viscosity and texture control in ointments, creams, and gels | High | Ensures stable, smooth formulations |
| Emulsifier / Stabilizer | Balances oil and water phases, prevents separation | High | Critical in topical and semi-solid dosage forms |
| Controlled Release Agent | Supports sustained release of active ingredients | Medium | Used in hydrophobic matrix systems |
| Water-Repellent Agent | Adds hydrophobic properties to formulations | High | Improves stability of ointments and waterproof topical products |
| Pigment Binder | Improves dispersion and adhesion of actives/pigments | Medium | Used in dermatological creams and medicated cosmetics |
| Texture Enhancer | Provides creamy, smooth feel | High | Improves patient compliance and sensory acceptance |
| Stability Enhancer | Extends shelf life and prevents phase separation | High | Important for premium pharmaceutical formulations |
| Safety Profile | Generally safe at pharmaceutical concentrations | Controlled | High levels may cause mild irritation; regulated under pharmacopeia limits |
Aluminium Distearate – Detergents & Soap Sector Suitability Table
| Application | Function | Suitability | Notes |
|---|---|---|---|
| Thickener / Rheology Modifier | Provides viscosity and texture control in liquid detergents and soaps | High | Ensures stable, smooth formulations |
| Foam Stabilizer | Enhances foam stability in cleaning products | High | Improves consumer perception of cleaning power |
| Water-Repellent Agent | Adds hydrophobic properties to soap formulations | Medium | Used in specialty soaps and industrial cleaners |
| Emulsifier / Stabilizer | Balances oil and water phases, prevents separation | High | Critical in multiphase detergent systems |
| Pigment Binder | Improves dispersion and adhesion of colorants | Medium | Used in decorative soaps and colored cleaning products |
| Durability Enhancer | Extends shelf life and prevents phase separation | High | Important for premium detergent and soap formulations |
| Safety Profile | Generally safe at detergent concentrations | Controlled | High levels may cause mild irritation; regulated under detergent standards |
Metallic Stearates – Comparative Table
| Type | Chemical Formula (General) | CAS No. | Appearance | Properties | Main Applications |
|---|---|---|---|---|---|
| Calcium Stearate | Ca(C₁₈H₃₅O₂)₂ | 1592-23-0 | Fine white powder | Neutral soap, water-repellent, low gel capacity | Plastics (internal lubricant), rubber (anti-sticking), food additive (E470a) |
| Zinc Stearate | Zn(C₁₈H₃₅O₂)₂ | 557-05-1 | White fine powder | Strong water repellency, good gel formation | Paints, varnishes, plastics, rubber mold release, cosmetic powders |
| Magnesium Stearate | Mg(C₁₈H₃₅O₂)₂ | 557-04-0 | White fine powder | Good mold release, low solubility | Pharmaceutical tablets (lubricant), cosmetics (powder), ABS plastics |
| Aluminium Monostearate | C₁₈H₃₅O₂Al | 7047-84-9 | White waxy powder | Strong gel-former, heavy body | Paints, inks, greases, waxes; pharmaceutical excipient |
| Aluminium Distearate | C₃₆H₇₂AlO₅ | 300-92-5 | White waxy powder | Good gel formation, medium viscosity | Paints, inks, greases, plastics, cement; waterproofing; lubricants |
| Aluminium Tristearate | C₅₄H₁₀₅AlO₆ | 637-12-7 | White waxy powder (denser) | Very strong gel, high viscosity | Construction chemicals, coatings, waterproofing, high-performance lubricants |
| General Aluminium Stearate | — | 10124-27-3 | Commercial blend | Non-stoichiometric mixtures | Industrial blends; mixed formulations |
| Barium Stearate | Ba(C₁₈H₃₅O₂)₂ | 6865-35-6 | White powder | High thermal stability | PVC stabilizer, plastic additive |
| Lead Stearate | Pb(C₁₈H₃₅O₂)₂ | 1072-35-1 | White powder | Very strong stabilizer, toxic | PVC stabilizer (now restricted) |
| Sodium Stearate | Na(C₁₈H₃₅O₂) | 822-16-2 | White granules/powder | Water-soluble, soap effect | Cleaning products, soaps, cosmetics |
| Potassium Stearate | K(C₁₈H₃₅O₂) | 593-05-3 | White powder | Water-soluble, soap effect | Soaps, cosmetics, pharmaceuticals |
| Lithium Stearate | Li(C₁₈H₃₅O₂) | 4485-12-5 | White powder | Stable at high temperatures | Greases (thickener), high-temp lubricants |
| Iron Stearate | Fe(C₁₈H₃₅O₂)₃ | 555-36-2 | Brown powder | Oxidative properties | Pigments, specialty coatings |
| Manganese Stearate | Mn(C₁₈H₃₅O₂)₂ | 557-09-6 | White powder | Catalytic properties | Paint driers, specialty chemicals |
Summary
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Calcium & Zinc: Most common in plastics, rubber, cosmetics.
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Magnesium: Pharmaceutical tablets and cosmetics.
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Aluminium (mono/di/tri): Strong gel and hydrophobic properties, versatile across paints, greases, cement, construction.
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Lithium: Critical in high-temperature greases.
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Sodium & Potassium: Classic soap bases, water-soluble.
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Barium & Lead: PVC stabilizers (lead now restricted).
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Iron & Manganese: Niche uses in pigments and catalysts.
