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Specifications of Decamethylcyclopentasiloxane丨CAS 541-02-6
|
Appearance |
Colorless transparent liquid |
|
Odor |
No abnormal odor |
|
D4 |
0.5% max |
|
D5 |
99.5% min |
|
Other cyclics |
1% max |
|
HCl |
5 ppm max |
|
KOH |
5 ppm max |
|
Water |
50 ppm max |
Applications
1. Cosmetics and Personal Care
Decamethylcyclopentasiloxane丨CAS 541-02-6 is widely used in cosmetics due to its unique sensory profile:
Hair care: Used in conditioners, serums, and styling products for smoothness and shine
Skin care: Common in creams and lotions for a silky, non-greasy finish
Deodorants and antiperspirants: Used as a carrier solvent for active ingredients
Makeup: Included in foundations and primers to enhance spreadability and texture
2. Industrial Applications
Acts as a solvent and carrier fluid in silicone formulations, lubricants, and polishes
Used in textile and leather treatment to impart softness and water resistance
Functions as a diluent in silicone-based products, such as elastomers and adhesives
Benefits
1. Superior Sensory Properties
Provides a light, non-greasy, quick-drying skin feel
Improves spreadability and texture of creams and lotions
2. Volatile Yet Stable
Evaporates from skin or hair after delivering active ingredients, leaving minimal residue
Useful in leave-on formulations for a clean feel
3. Enhances Shine and Slip
In hair care, D5 increases manageability, gloss, and detangling
In skin care, imparts a velvety smoothness and temporary line-filling effect
4. Hydrophobic Properties
Contributes to water resistance in formulations like sunscreens, foundations, and antiperspirants
Summary
Decamethylcyclopentasiloxane丨CAS 541-02-6 is a cyclic silicone compound prized in cosmetics for its light, silky feel, volatility, and ability to enhance texture, shine, and spreadability. Its extensive use in personal care products is balanced with increasing attention to its environmental persistence, prompting evolving regulatory measures in some regions.
