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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
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Quality Segment

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

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.

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Storage Class

10 - Combustible liquids

Flash Point (°F)

163.4 °F - closed cup

Flash Point (°C)

73 °C - closed cup

PPE (personal protective equipment)

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

Precautionary Statements

P201 - P202 - P273 - P391 - P501

Hazard Classifications

PBT - vPvB

Signal Word

Danger

Hazard Codes

EUH441

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