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Decamethylcyclopentasiloxane (D5) is also used as a dry-cleaning solvent.
Decamethylcyclopentasiloxane (D5) was first marketed by GreenEarth Cleaning in the 1990s and was claimed to be eco-friendlier than tetrachloroethylene (the most common dry-cleaning solvent worldwide since the 1950s) despite being controlled in the EU for to its persistent, bioaccumulative and toxic characteristics.
Decamethylcyclopentasiloxane (D5) is more bioaccumulative than tetrachloroethylene and it does not break down in nature.
CAS: 541-02-6
MF: C10H30O5Si5
MW: 370.77
EINECS: 208-764-9
Synonyms
2,2,4,4,6,6,8,8,10,10-Decamethyl-1,3,5,7,9,2,4,6,8,10-pentaoxapentasilecane;cyclicdimethylsiloxanepentamer;Cyclopentasiloxane, decamethyl-;D3770;Decamethylcylopentasiloxane;siliconsf1202;unioncarbide7158siliconefluid;vs7158
Decamethylcyclopentasiloxane (D5) is a cyclic siloxane, that has a silicon-oxygen bond in a cyclic arrangement and methyl groups attached with the silicon atom.
Decamethylcyclopentasiloxane (D5) is used in the production of some silicon-based polymers that are widely used in various personal care products.
Pharmaceutical secondary standards for application in quality control, provide pharma laboratories and manufacturers with a convenient and cost-effective alternative to the preparation of in-house working standards.
Decamethylcyclopentasiloxane (D5)'s use in dry cleaning will be prohibited in the European Union after June 2026 due to its environmental effect.
Decamethylcyclopentasiloxane (D5) is member of cyclomethicone, which are a group of liquid methyl siloxanes that have low viscosity and high volatility.
Decamethylcyclopentasiloxane (D5) is cyclic in structure with a monomer backbone of one silicon and two oxygen atoms bonded together.
Decamethylcyclopentasiloxane (D5) is used in cosmetic and personal products as a skin emollient.
Decamethylcyclopentasiloxane, commonly referred to as Decamethylcyclopentasiloxane (D5), is a cyclic siloxane compound characterized by its unique structure consisting of a ring of five silicon atoms, each bonded to two methyl groups.
Decamethylcyclopentasiloxane (D5) is a clear, colorless liquid with a low viscosity and a low surface tension, making it highly effective as a lubricant and emollient in various applications.
Decamethylcyclopentasiloxane (D5) is known for its thermal stability and resistance to oxidation, which contributes to its longevity in formulations.
Decamethylcyclopentasiloxane (D5) is often used in personal care products, such as shampoos and lotions, due to its ability to impart a silky feel and enhance spreadability.
Additionally, Decamethylcyclopentasiloxane (D5) exhibits low toxicity and is considered environmentally friendly, although its environmental impact has been a subject of regulatory scrutiny.
Decamethylcyclopentasiloxane (D5)'s volatility allows for easy evaporation, which can be advantageous in certain applications but may also raise concerns regarding air quality.
Overall, Decamethylcyclopentasiloxane (D5) is valued for its multifunctional properties in both industrial and consumer products.
Decamethylcyclopentasiloxane (D5) Chemical Properties
Melting point: -44°C
Boiling point: 90 °C/10 mmHg (lit.)
Density: 0.958 g/mL at 25 °C (lit.)
Vapor pressure: 33.2Pa at 25℃
Refractive index: n20/D 1.396(lit.)
Fp: 162 °F
Storage temp.: 2-8°C
Solubility: <0.0001g/l (calculated)
Form: Liquid
Color: Colorless
Specific Gravity: 0.959
Explosive limit: 0.52-7%(V)
Water Solubility: Immiscible with water.
Hydrolytic Sensitivity 1: no significant reaction with aqueous systems
Merck: 14,2848
BRN: 1800166
Dielectric constant: 2.5（20℃）
Stability: Stable. Incompatible with strong oxidizing agents.
InChIKey: XMSXQFUHVRWGNA-UHFFFAOYSA-N
LogP: 8.07 at 24.6℃
Surface tension: 18.29 mN/m at 297.15K
CAS DataBase Reference: 541-02-6(CAS DataBase Reference)
NIST Chemistry Reference: Decamethylcyclopentasiloxane (D5)(541-02-6)
EPA Substance Registry System: Decamethylcyclopentasiloxane (D5) (541-02-6)
Uses
Intermediate in the manufacture of high mol wt siloxane polymers.
Carrier ingredient in personal care products; dry cleaning solvent.
Octamethylcyclotetrasiloxane and Decamethylcyclopentasiloxane (D5) are major industrial products, which are either marketed as such or used for the production of polydimethylsiloxanes.
Decamethylcyclopentasiloxane (D5) is incorporated into a formulation for its emollient and solvent activity.
A cyclic volatile methylsiloxane (cVMS) used in cosmetic and personal care products.
Used in dermal exposure and inhalation toxicity study.
