Decamethylcyclopentasiloxane

Decamethylcyclopentasiloxane
IUPAC name Decamethyl-1,3,5,7,9,2,4,6,8,10-pentaoxapentasilecane
Other names Cyclopentamethicone D5 Cyclic pentamer 2,2,4,4,6,6,8,8,10,10-Decamethylcyclopentasiloxane
Identifiers
CAS number	541-02-6 Y
PubChem	10913
ChemSpider	10451 Y
UNII	0THT5PCI0R Y
EC number	208-764-9
MeSH	Decamethylcyclopentasiloxane
RTECS number	GY5945200
Beilstein Reference	1800166
Jmol-3D images	Image 1 Image 2
SMILES C[Si]1(C)O[Si](C)(C)O[Si](C)(C)O[Si](C)(C)O[Si](C)(C)O1 O1[Si](O[Si](O[Si](O[Si](O[Si]1(C)C)(C)C)(C)C)(C)C)(C)C
InChI InChI=1S/C10H30O5Si5/c1-16(2)11-17(3,4)13-19(7,8)15-20(9,10)14-18(5,6)12-16/h1-10H3 Y Key: XMSXQFUHVRWGNA-UHFFFAOYSA-N Y InChI=1/C10H30O5Si5/c1-16(2)11-17(3,4)13-19(7,8)15-20(9,10)14-18(5,6)12-16/h1-10H3 Key: XMSXQFUHVRWGNA-UHFFFAOYAC
Properties
Molecular formula	C10H30O5Si5
Molar mass	370.77 g mol−1
Exact mass	370.093956735 g mol-1
Appearance	Colourless liquid
Density	0.958 g cm-3
Melting point	-47 °C, 226 K, -53 °F
Boiling point	210 °C, 483 K, 410 °F
Viscosity	3.74 cP
Hazards
MSDS	External MSDS
EU classification	Xi
R-phrases	R36/37/38
S-phrases	S23, S24/25
NFPA 704	2 1 0
Flash point	73 °C
Related compounds
Related Organosilicon compounds	tetramethylsilane, silabenzene
Y (verify) (what is: Y/N?) Except where noted otherwise, data are given for materials in their standard state (at 25 °C, 100 kPa)
Infobox references

Decamethylcyclopentasiloxane (D5) is a silicone fluid commonly used in cosmetics such as deodorants, sunblocks, hair sprays and skin care products. It is becoming more common in hair conditioners, as it makes the hair easier to brush without breakage. It is also used as part of silicone based personal lubricants. It can be found in other cosmetics such as sunless tanning lotion and underarm deodorants. D5 is an emollient.

D5 is contained in the mixture cyclomethicone (INCI name).

See also

• GreenEarth Cleaning

External links

• Record in the Household Products Database of NLM

This article about an organic compound is a stub. You can help Wikipedia by expanding it.v · Categories: Organic compound stubs Cosmetics chemicals Silicon heterocycles Siloxanes Wikimedia Foundation. 2010. Игры ⚽ Поможем решить контрольную работу Cyclic number (group theory) Transposable integer Look at other dictionaries: decamethylcyclopentasiloxane — noun A particular cyclic siloxane …   Wiktionary Siloxane — Decamethylcyclopentasiloxane, un siloxane cyclique. Les Siloxanes sont une classe de composés du silicium dont la formule empirique est R2SiO, où R est un groupe radical qui peut être organique. Des exemples représentatifs sont [SiO(CH3)2]n… …   Wikipédia en Français Siloxane — The siloxane unit A siloxane is any chemical compound composed of units of the form R2SiO, where R is a hydrogen atom or a hydrocarbon group. They belong to the wider class of organosilicon compounds. Siloxanes can have branched or unbranched… …   Wikipedia Cyclométicone — Général No CAS …   Wikipédia en Français Dry cleaning — (or dry cleaning) is any cleaning process for clothing and textiles using a chemical solvent other than water. The solvent used is typically tetrachloroethylene (perchloroethylene), abbreviated perc in the industry and dry cleaning fluid by the… …   Wikipedia D5 — or D05 can refer to: D5 Dice, a unique 5 sided die designed for tabletop gaming by Louis Zocchi D5 HD, a professional digital video format D5 motorway (Czech Republic) D5 road (Croatia), a state road D5 Ultrasite, a type of edge technology base… …   Wikipedia Siloxane — Disiloxan Hexamethyldisiloxan, ein di Siloxan …   Deutsch Wikipedia 18+ © Academic, 2000-2024 Contact us: Technical Support, Advertising Dictionaries export, created on PHP, Joomla, Drupal, WordPress, MODx. Mark and share Search through all dictionaries Translate… Search Internet Share the article and excerpts Direct link … Do a right-click on the link above and select “Copy Link”