Chemical Name:
Ethylene Glycol Distearate. Often referred to simply as EGDS
CAS Number:
627-83-8 (for the pure compound). Commercial grades are often mixtures and may use 91031-31-1
Molecular Formula:
C38H74O4
Molecular Weight:
595.0 g/mol (theoretical)
Common Form:
White to off-white flakes, beads, or waxy solid. It has a characteristic mild, fatty odor.
Uses:
EGDS is a non-ionic, pearlescent wax ester primarily valued for its ability to create a luxurious, opaque, pearlescent sheen in products. It is a staple in personal care and detergent formulations.
Primary Applications:
· Personal Care & Cosmetics: Its dominant application. Used as a pearlizing and opacifying agent in shampoos, conditioners, liquid soaps, shower gels, and creams to impart a rich, opaque, pearly appearance.
· Detergents & Cleaners: Used in liquid dish soaps, fabric softeners, and household cleaners to provide a pearlescent, premium visual effect and contribute to viscosity.
· Industrial Applications: Can act as a lubricant, softening agent, or opacifier in various wax blends, polishes, and textile formulations.
What does Ethylene Glycol Distearate do in a formulation?
· Pearlescent/Opacifying Agent: Its primary function. It forms microscopic crystalline platelets in the product that reflect light, creating the characteristic pearl luster and hiding the transparency of the base.
· Viscosity Modifier/Thickener: Contributes to the rheology, helping to build viscosity and improve the "body" or texture of liquid formulations.
· Emollient & Skin Feel Enhancer: Leaves a soft, smooth, and sometimes silky after-feel on skin and hair.
· Emulsion Stabilizer: Can help stabilize oil-in-water emulsions due to its surfactant-like properties.
· Lubricant: Provides lubricity in certain industrial applications.
Safety Profile (Critical):
· Hazard Classification: Generally considered low hazard. It is not classified as a skin sensitizer, mutagen, or carcinogen. It is non-toxic and biodegradable.
· Skin/Eye Contact: The solid or molten material is not typically irritating. Dust from flakes/powder may cause mild mechanical eye irritation.
· Inhalation: Low hazard. Inhalation of dust may cause respiratory tract irritation.
· Ingestion: Considered low toxicity if ingested in small amounts (typical of consumer product exposure).
· Environmental Impact: Readily biodegradable and is not considered bioaccumulative.
· Required PPE: Basic industrial hygiene: safety glasses to prevent dust contact, and gloves when handling hot, molten material. A dust mask is recommended when handling powder in enclosed spaces.
· Handling Note: Store in a cool, dry place away from heat and open flames. When melting, use equipment with temperature control as overheating can degrade the material.
Technical profile:
| Property | Values |
| Appearance | White to off-white flakes, beads, or waxy solid |
| Active Content | Typically sold as near 100% active |
| Melting Point / Solidification Point | Typically between 54°C and 65°C (129°F - 149°F), depending on the specific stearic acid composition and grade |
| Acid Value | Very low (typically < 5 mg KOH/g), indicating it is fully esterified |
| Iodine Value | Very low, indicating high saturation and good oxidative stability |
| Solubility | Insoluble in water. Soluble in hot alcohols, oils, and most organic solvents. It must be dispersed or melted into a formulation |
| Usage Level | Typically used at 0.5% - 3.0% in personal care formulations to achieve pearl effect |