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Merck

444278

Decamethylcyclopentasiloxane

97%

Synonym(s):

2,2,4,4,6,6,8,8,10,10-Decamethylcyclopentasiloxane, Cyclic dimethylsiloxane pentamer, Cyclo-decamethylpentasiloxane, Cyclomethicone pentamer 245, Decamethylpentacyclosiloxane

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About This Item

Empirical Formula (Hill Notation):
C10H30O5Si5
CAS Number:
541-02-6
Molecular Weight:
370.77
UNSPSC Code:
12352103
NACRES:
NA.22
PubChem Substance ID:
24868110
EC Number:
208-764-9
Beilstein/REAXYS Number:
1800166
MDL number:
MFCD00046966

Key Documents

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InChI key

XMSXQFUHVRWGNA-UHFFFAOYSA-N

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

SMILES string

C[Si]1(C)O[Si](C)(C)O[Si](C)(C)O[Si](C)(C)O[Si](C)(C)O1

assay

97%

form

liquid

refractive index

n20/D 1.396 (lit.)

bp

90 °C/10 mmHg (lit.)

density

0.958 g/mL at 25 °C (lit.)

Quality Level

100

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General description

Decamethylcyclopentasiloxane (D5) is used in personal care products including skin creams, cosmetics, shampoos, deodorants and conditioners. D5 is also used in various applications such as industrial cleaning fluids and dry cleaning solvents.

Application

Decamethylcyclopentasiloxane (D5) can be used as:
  • A greener solvent in synthetic chemistry applications.
  • A monomeric unit for polymerization by various base catalysts to obtain polysiloxane polymer.

Storage Class

10 - Combustible liquids

wgk

WGK 2

flash_point_f

163.4 °F - closed cup

flash_point_c

73 °C - closed cup

ppe

Eyeshields, Gloves, multi-purpose combination respirator cartridge (US)

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Certificates of Analysis (COA)

Lot/Batch Number
0000493792
0000493792
MKCZ5881
MKCZ4666
0000308959

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Characterization of ecological risks from environmental releases of decamethylcyclopentasiloxane (D5).
Fairbrother A, et al.
Environmental Toxicology and Chemistry / Setac, 34(12), 2715-2722 (2015)
Qiyan Li et al.
Cell biochemistry and function, 32(2), 183-187 (2013-09-03)
Corneal epithelial barrier dysfunction is harmful to corneal health; the pathogenesis is unclear. This study aims to elucidate the mechanism by which tryptase compromises corneal epithelial barrier function. Human corneal epithelial cell line (HCE cells) was cultured into monolayers using
Ring-opening polymerization of decamethylcyclopentasiloxane initiated by a superbase: Kinetics and rheology.
Pibre G, et al.
Polymer, 49(1), 234-240 (2008)
Vivian C Chioma et al.
Biological psychiatry, 89(10), 947-958 (2021-02-14)
Seeking addictive drugs is regulated by synaptic plasticity in the nucleus accumbens core and involves distinct plasticity in D1 and D2 receptor-expressing medium spiny neurons (D1/2-MSNs). However, it is unknown how differential plasticity between the two cell types is coordinated.
Zhongwang Yu et al.
Advanced science (Weinheim, Baden-Wurttemberg, Germany), 9(24), e2105442-e2105442 (2022-06-28)
Blood-brain barrier (BBB) impairment is an early prevalent feature of multiple sclerosis (MS), and remains vital for MS progression. Microglial activation precedes BBB disruption and cellular infiltrates in the brain of MS patients. However, little is known about the function
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