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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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50 ML
€52.80
250 ML
€184.00

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50 ML
€52.80
250 ML
€184.00

About This Item

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

€52.80

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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.[1]

Application

Decamethylcyclopentasiloxane (D5) can be used as:
  • A greener solvent in synthetic chemistry applications.[2]
  • A monomeric unit for polymerization by various base catalysts to obtain polysiloxane polymer.[3][4]

Storage Class Code

10 - Combustible liquids

WGK

WGK 2

Flash Point(F)

163.4 °F - closed cup

Flash Point(C)

73 °C - closed cup

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

Regulatory Listings

Regulatory Listings are mainly provided for chemical products. Only limited information can be provided here for non-chemical products. No entry means none of the components are listed. It is the user’s obligation to ensure the safe and legal use of the product.

EU REACH SVHC Candidate List

CAS No.

EU REACH Annex XVII (Restriction List)

CAS No.

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Certificates of Analysis (COA)

Lot/Batch Number
0000308959
0000308959
0000246889
MKCT7009
0000246889

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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)
Ying Chen et al.
Materials (Basel, Switzerland), 15(1) (2022-01-12)
To investigate the toxicity of the low-molecular-weight components (LMWCs) in ophthalmic silicone oils (SilOils) on retinal cell lines. The toxicity of six types of LMWCs were studied and compared with conventional SilOil 1000 cSt. In vitro cytotoxic tests of LMWCs
Deoligomerization of cyclooligosiloxanes with dimethyl carbonate over solid-base catalysts.
Okamoto M, et al.
Catalysis Letters, 88(3-4), 115-118 (2003)
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