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Decamethylcyclopentasiloxane CAS #541-02-6 - Image 2
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Decamethylcyclopentasiloxane CAS #541-02-6

Decamethylcyclopentasiloxane (D 5) is a silicone compound with the molecular formula of [(CH 3) 2SiO] 5. It is a colorless and tasteless liquid with slight volatility.

Cyclopentasiloxane CAS No. 541-02-6, chemical formula C10H30O5Si5, molecular weight 370.77000, Chinese alias decamethylcyclopentasiloxane, liquid, boiling point 90 °C10 mm Hg(lit.), flash point 162 °F, density 0.958 g/mL at 25 °C(lit.), refractive index n20/D 1.396(lit.). Decamethylcyclopentasiloxane (cyclopentasiloxane) is a colorless, odorless, volatile liquid cyclic siloxane, safe and environmentally friendly, and has been widely used in health and beauty products , such as deodorants, antiperspirants, cosmetics, shampoos, body lotions, etc. Good compatibility with alcohol and most other cosmetic solvents.

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Decamethylcyclopentasiloxane CAS #541-02-6

Decamethylcyclopentasiloxane Basic information
Product Name: Decamethylcyclopentasiloxane
Synonyms: CD3770;cyclicdimethylsiloxanepentamer;D3770;siliconsf1202;vs7158;CYCLIC PENTAMER-D5;DECAMETHYLCYCLOPENTASILOXANE;Decamethylcyclopentasiloxane (cyclic monomer)Cyclic Pentamer-D5
CAS: 541-02-6
MF: C10H30O5Si5
MW: 370.77
EINECS: 208-764-9
Product Categories: Organometallic Reagents;Organosilicon;Si (Classes of Silicon Compounds);Si-O Compounds;Heterocycles;Intermediates & Fine Chemicals;Pharmaceuticals;Organics;Silicone Series;Siloxanes;541-02-6
Mol File: 541-02-6.mol
Decamethylcyclopentasiloxane Structure
Decamethylcyclopentasiloxane 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℃
CAS DataBase Reference 541-02-6(CAS DataBase Reference)
NIST Chemistry Reference Decamethylcyclopentasiloxane(541-02-6)
EPA Substance Registry System Decamethylcyclopentasiloxane (541-02-6)

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