Dodecamethylpentasiloxane

ALDRICH/447269 - 97%

Synonym: 1,1,1,3,3,5,5,7,7,9,9,9-Dodecamethylpentasiloxane; DC 200 Fluid 2

CAS Number: 141-63-9
Empirical Formula (Hill Notation): C₁₂H₃₆O₄Si₅
Molecular Weight: 384.84
EC Number: 205-492-2
MDL Number: MFCD00039795
Linear Formula: (CH₃)₃SiO[Si(CH₃)₂O]₃Si(CH₃)₃
Product Type: Chemical

Catalog Number	PKG Qty.	Price


45-447269-10ML	10 mL	$84.00 1/EA	Add To Favorites
45-447269-50ML	50 mL	$271.00 1/EA	Add To Favorites

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Properties
Descriptions
Safety Info.
Basic Data

assay	97%
bp	230 °C (lit.)
density	0.875 g/mL at 25 °C (lit.)
InChI	1S/C12H36O4Si5/c1-17(2,3)13-19(7,8)15-21(11,12)16-20(9,10)14-18(4,5)6/h1-12H3
InChI key	FBZANXDWQAVSTQ-UHFFFAOYSA-N
mp	−81 °C (lit.)
Quality Level	100
refractive index	n20/D 1.392 (lit.)
SMILES string	C[Si](C)(C)O[Si](C)(C)O[Si](C)(C)O[Si](C)(C)O[Si](C)(C)C
vapor pressure	<1 mmHg ( 20 °C)

Application:	Adsorption Characteristics of Dodecamethylpentasiloxane from Landfill Leachate: This study investigates the adsorption behavior of dodecamethylpentasiloxane in municipal solid waste, crucial for environmental chemists and waste management specialists (Q Kong et al., 2022 ). Toxicity of Silicone Oil: This research evaluates the cytotoxicity of liquid low molecular weight cyclosiloxanes including dodecamethylpentasiloxane, significant for drug discovery chemists considering silicone oil applications (Y Chen et al., 2021 ). Bioaccumulation of Volatile Methylsiloxanes: Review of how volatile methylsiloxanes like dodecamethylpentasiloxane bioaccumulate in aquatic ecosystems, useful for environmental scientists and regulatory bodies (F Bernardo et al., 2022 ). Solid MRI Contrast Agents: Describes the use of dodecamethylpentasiloxane as a contrast agent for in vivo oxygen sensing, relevant to biomedical research and materials science (VH Liu et al., 2014 ). Effective Removal of Methyl Siloxane by Sewage Sludge Microbes: Discusses biodegradation of dodecamethylpentasiloxane, pertinent for environmental chemists and waste treatment research (Y Wang et al., 2019 ).
General description:	Dodecamethylpentasiloxane is an organosilicon compound that is used as a reactant or as a solvent in organic synthesis. It is also used as a precursor compound to synthesize useful compounds, such as straight-chain linear polydimethylsiloxanes (PDMS), which are widely used in industrial applications such as coatings, adhesives, and elastomers.
Packaging:	10, 50 mL in glass bottle

Symbol	GHS07
Signal word	Warning
Hazard statements	H315 - H319 - H335
Precautionary statements	P302 + P352 - P305 + P351 + P338
Hazard Codes	Xi
Risk Statements	36/37/38
Safety Statements	26-36
RIDADR	NA 1993 / PGIII
WGK Germany	WGK 3
Flash Point(F)	186.8 °F - closed cup
Flash Point(C)	86 °C - closed cup

Purity	97%
bp	230 °C (lit.)
mp	−81 °C (lit.)
Density	0.875 g/mL at 25 °C (lit.)
Refractive Index	n20/D 1.392 (lit.)
UNSPSC	12352103

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