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444278

Sigma-Aldrich

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
Beilstein/REAXYS Number:
1800166
EC Number:
208-764-9
MDL number:
MFCD00046966
UNSPSC Code:
12352103
PubChem Substance ID:
24868110

Quality Level

100

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.)

SMILES string

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

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

InChI key

XMSXQFUHVRWGNA-UHFFFAOYSA-N

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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_germany

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)

Certificates of Analysis (COA)

Search for Certificates of Analysis (COA) by entering the products Lot/Batch Number. Lot and Batch Numbers can be found on a product’s label following the words ‘Lot’ or ‘Batch’.

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Supelco

38677

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98%

Sigma-Aldrich

235709

Octamethyltrisiloxane

MMP-9 Inhibitor I MMP-9 Inhibitor I, CAS 1177749-58-4, is a cell-permeable, potent, and reversible MMP-9 Inhibitor (IC₅₀ = 5 nM). At high concentration inhibits MMP-1 (IC₅₀ = 1.05 µM) & MMP-13 (IC₅₀ = 113 nM).

Millipore

444278-M

MMP-9 Inhibitor I

≥98.5%, ≥99.999% trace metals basis

Sigma-Aldrich

512990

2,4,6,8-Tetramethylcyclotetrasiloxane

Ring-opening polymerization of decamethylcyclopentasiloxane initiated by a superbase: Kinetics and rheology.
Pibre G, et al.
Polymer, 49(1), 234-240 (2008)
The potential of methylsiloxanes as solvents for synthetic chemistry applications.
Ab Rani M, et al.
Green Chemistry, 16(3), 1282-1296 (2014)
Deoligomerization of cyclooligosiloxanes with dimethyl carbonate over solid-base catalysts.
Okamoto M, et al.
Catalysis Letters, 88(3-4), 115-118 (2003)
Characterization of ecological risks from environmental releases of decamethylcyclopentasiloxane (D5).
Fairbrother A, et al.
Environmental Toxicology and Chemistry / Setac, 34(12), 2715-2722 (2015)
Xiaohui Gou et al.
Frontiers in physiology, 11, 686-686 (2020-07-17)
Dentin sialoprotein (DSP), the NH2-terminal fragment of dentin sialophosphoprotein (DSPP), is essential for dentin formation and further processed into small fragments inside the odontoblasts. Gelatinases, including matrix metalloproteinases 9 (MMP9) and MMP2, were able to cleave DSP(P) in tooth structures.
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