SORBITAN TRISTEARATE (STS)

Sorbitan Tristearate (STS) is a nonionic surfactant and emulsifier derived from sorbitol and stearic acid, widely used in food, pharmaceutical, cosmetic, and industrial formulations.
Sorbitan Tristearate (STS) functions primarily as a water-in-oil (W/O) emulsifier and stabilizer in fat-rich and wax-based systems.
Sorbitan Tristearate (STS) is valued for its low HLB value, excellent thermal stability, and compatibility with lipophilic ingredients.

CAS Number: 26658-19-5
EC Number: 247-891-4
Molecular Formula: C₆₀H₁₁₄O₈
Molecular Weight: ~963.49 g/mol

Synonyms: Sorbitan Tristearate, STS, Span 65, Tristearate of Sorbitan, Sorbitan Stearate Ester, Nonionic W/O Emulsifier, Lipophilic Emulsifier, Sorbitan Tristearate, STS, Sorbitan Tristearate Ester, Sorbitan Tristearate Emulsifier, Sorbitan Tristearate E Number, E492 Sorbitan Tristearate, E492, Sorbitan Tristearate Food Additive, Sorbitan Tristearate Emulsifying Agent, Sorbitan Tristearate Nonionic Emulsifier, Sorbitan Tristearate Lipophilic Emulsifier, Sorbitan Tristearate W/O Emulsifier, Sorbitan Tristearate Oil-Phase Emulsifier, Sorbitan Tristearate Stabilizer, Sorbitan Tristearate Thickener, Sorbitan Tristearate Structuring Agent, Sorbitan Tristearate Consistency Agent, Sorbitan Tristearate Fatty Ester, Sorbitan Tristearate Stearic Acid Ester, Sorbitan Tristearate Fatty Acid Ester, Sorbitan Tristearate Surfactant, Sorbitan Tristearate Surface Active Agent, Sorbitan Tristearate Dispersing Agent, Sorbitan Tristearate Emulsion Stabilizer, Sorbitan Tristearate Food Grade, Sorbitan Tristearate Pharmaceutical Grade, Sorbitan Tristearate Cosmetic Grade, Sorbitan Tristearate Industrial Grade, Sorbitan Tristearate Technical Grade, High-Purity Sorbitan Tristearate, Pure Sorbitan Tristearate, Extra-Pure Sorbitan Tristearate, Sorbitan Tristearate Powder, Sorbitan Tristearate Flakes, Sorbitan Tristearate Pellets, Sorbitan Tristearate Wax, Sorbitan Tristearate Fat Structurant, Sorbitan Tristearate Fat Stabilizer, Sorbitan Tristearate Chocolate Additive, Sorbitan Tristearate Confectionery Emulsifier, Sorbitan Tristearate Bakery Emulsifier, Sorbitan Tristearate Margarine Emulsifier, Sorbitan Tristearate Shortening Emulsifier, Sorbitan Tristearate Dairy Additive, Sorbitan Tristearate Cream Stabilizer, Sorbitan Tristearate Food Processing Aid, Sorbitan Tristearate Cosmetic Emulsifier, Sorbitan Tristearate Skincare Emulsifier, Sorbitan Tristearate Personal Care Ingredient, Sorbitan Tristearate Pharmaceutical Excipient, Sorbitan Tristearate Tablet Lubricant, Sorbitan Tristearate Capsule Ingredient, Sorbitan Tristearate Release Agent

APPLICATIONS

Sorbitan Tristearate (STS) is used in food applications.
Sorbitan Tristearate (STS) stabilizes margarines and fat-based spreads.
Sorbitan Tristearate (STS) improves texture and mouthfeel in confectionery products.

Sorbitan Tristearate (STS) is applied in chocolate and cocoa products.
Sorbitan Tristearate (STS) controls fat crystallization behavior.
Sorbitan Tristearate (STS) helps reduce fat bloom formation.

Sorbitan Tristearate (STS) is used in bakery shortenings.
Sorbitan Tristearate (STS) improves dough handling and machinability.
Sorbitan Tristearate (STS) enhances crumb softness and shelf life.

Sorbitan Tristearate (STS) is incorporated into cosmetic creams and ointments.
Sorbitan Tristearate (STS) stabilizes water-in-oil emulsions.
Sorbitan Tristearate (STS) improves consistency and sensory properties.

Sorbitan Tristearate (STS) is used in pharmaceutical formulations.
Sorbitan Tristearate (STS) stabilizes topical creams and ointments.
Sorbitan Tristearate (STS) supports uniform distribution of active ingredients.

Sorbitan Tristearate (STS) is applied in industrial emulsions.
Sorbitan Tristearate (STS) stabilizes lubricants and polishing compounds.
Sorbitan Tristearate (STS) enhances heat stability of emulsions.

Sorbitan Tristearate (STS) is used as a water-in-oil emulsifier in cosmetic formulations.
Sorbitan Tristearate (STS) stabilizes creams and ointments with high oil content.
Sorbitan Tristearate (STS) improves emulsion stability in anhydrous systems.

Sorbitan Tristearate (STS) is used in pharmaceutical ointments.
Sorbitan Tristearate (STS) enhances consistency in topical medicinal products.
Sorbitan Tristearate (STS) supports uniform distribution of active ingredients.

Sorbitan Tristearate (STS) is used in food processing.
Sorbitan Tristearate (STS) functions as an emulsifier in confectionery products.
Sorbitan Tristearate (STS) improves texture in chocolate and fat-based fillings.

Sorbitan Tristearate (STS) is used in bakery applications.
Sorbitan Tristearate (STS) enhances dough stability in specialty baked goods.
Sorbitan Tristearate (STS) improves crumb softness and shelf life.

Sorbitan Tristearate (STS) is used in margarine and shortening formulations.
Sorbitan Tristearate (STS) stabilizes fat crystal structures.
Sorbitan Tristearate (STS) improves spreadability in fat-based products.

Sorbitan Tristearate (STS) is used in skin care products.
Sorbitan Tristearate (STS) provides a rich and smooth skin feel.
Sorbitan Tristearate (STS) reduces greasiness in heavy cream formulations.

Sorbitan Tristearate (STS) is used in decorative cosmetics.
Sorbitan Tristearate (STS) stabilizes pigments in foundations and concealers.
Sorbitan Tristearate (STS) improves payoff and texture in makeup products.

Sorbitan Tristearate (STS) is used in hair styling products.
Sorbitan Tristearate (STS) enhances product structure in pomades and waxes.
Sorbitan Tristearate (STS) improves control and hold in styling formulations.

Sorbitan Tristearate (STS) is used in industrial lubricants.
Sorbitan Tristearate (STS) acts as an emulsifier in grease formulations.
Sorbitan Tristearate (STS) improves stability of lubricating emulsions.

Sorbitan Tristearate (STS) is used in candle manufacturing.
Sorbitan Tristearate (STS) enhances wax consistency and burning performance.
Sorbitan Tristearate (STS) improves fragrance retention in candles.

Sorbitan Tristearate (STS) is used in textile finishing.
Sorbitan Tristearate (STS) improves softness in fabric treatments.
Sorbitan Tristearate (STS) enhances lubrication during fiber processing.

Sorbitan Tristearate (STS) is used in plastic processing.
Sorbitan Tristearate (STS) acts as an internal lubricant in polymer compounding.
Sorbitan Tristearate (STS) improves flow properties during molding operations.

Sorbitan Tristearate (STS) is used in agricultural formulations.
Sorbitan Tristearate (STS) stabilizes oil-based pesticide emulsions.
Sorbitan Tristearate (STS) improves spreading of active ingredients on plant surfaces.

DESCRIPTION

Sorbitan Tristearate (STS) is a waxy solid at room temperature.
Sorbitan Tristearate (STS) is odorless or has a faint fatty odor.
Sorbitan Tristearate (STS) is insoluble in water but soluble in oils and fats.

Sorbitan Tristearate (STS) has a low hydrophilic-lipophilic balance.
Sorbitan Tristearate (STS) is particularly suitable for W/O emulsions.
Sorbitan Tristearate (STS) provides stable emulsions under elevated temperatures.

Sorbitan Tristearate (STS) is chemically nonionic and non-reactive.
Sorbitan Tristearate (STS) shows good compatibility with other emulsifiers.
Sorbitan Tristearate (STS) is often used with polysorbates to balance HLB.

Sorbitan Tristearate (STS) is stable under normal storage conditions.
Sorbitan Tristearate (STS) resists hydrolysis in neutral systems.
Sorbitan Tristearate (STS) supports long shelf life of finished products.

Sorbitan Tristearate (STS) is a nonionic surfactant derived from sorbitol and stearic acid.
Sorbitan Tristearate (STS) appears as a waxy solid at room temperature.
Sorbitan Tristearate (STS) is insoluble in water but soluble in oils and fats.

Sorbitan Tristearate (STS) has a low hydrophilic-lipophilic balance value.
Sorbitan Tristearate (STS) is well suited for water-in-oil emulsions.
Sorbitan Tristearate (STS) provides excellent emulsion stability in high-fat systems.

Sorbitan Tristearate (STS) exhibits good thermal stability.
Sorbitan Tristearate (STS) contributes to smooth texture and improved sensory feel.
Sorbitan Tristearate (STS) enhances product consistency without excessive tackiness.

Sorbitan Tristearate (STS) is compatible with a wide range of oils and waxes.
Sorbitan Tristearate (STS) is commonly combined with polysorbates for balanced emulsification.
Sorbitan Tristearate (STS) is stable over a broad pH range.

Sorbitan Tristearate (STS) should be stored in cool, dry conditions.
Sorbitan Tristearate (STS) is widely used in food, cosmetic, pharmaceutical, and industrial formulations.
Sorbitan Tristearate (STS) is valued for its emulsifying, stabilizing, and texturizing properties.

PROPERTIES

Chemical Formula: C₆₀H₁₁₄O₈
Molecular Weight: ~963.49 g/mol
Appearance: Cream to pale yellow waxy solid
Odor: Odorless or slight fatty odor
Density: ~0.98–1.02 g/cm³ at 20°C
Melting Point: ~50–55°C
Boiling Point: Not applicable; decomposes before boiling
HLB Value: ~2.1
Solubility in Water: Insoluble
Solubility in Oils: Soluble in vegetable oils, mineral oils, and waxes
Solubility in Alcohol: Slightly soluble in hot ethanol
Acid Value: ≤10 mg KOH/g
Saponification Value: ~175–185 mg KOH/g
Thermal Stability: High; suitable for heated processing
Oxidative Stability: Good under recommended conditions
Storage Temperature: Store below 30°C in dry conditions

FIRST AID

Inhalation:
Not expected to be hazardous.
Move to fresh air if dust is inhaled.

Skin Contact:
Wash with soap and water.
Generally non-irritating.

Eye Contact:
Rinse with water if contact occurs.
Seek medical attention if irritation persists.

Ingestion:
Rinse mouth and drink water.
Seek medical advice if discomfort occurs.

Note to Physicians:
Treat symptomatically.

HANDLING AND STORAGE

Handling:
Use standard hygiene practices.
Avoid excessive dust generation when handling solid material.

Avoidance:
Avoid strong oxidizing agents.
Avoid prolonged exposure to moisture and heat.

Spill Procedures:
Collect mechanically and clean residues.
Dispose according to local regulations.

Storage:
Store in tightly closed containers.
Keep in a cool, dry, well-ventilated area.
Protect from direct sunlight and moisture.