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141-63-9

141-63-9 structural image
Product Name: DODECAMETHYLPENTASILOXANE
Formula: C12H36O4Si5
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CHEMICAL AND PHYSICAL PROPERTIES

Physical Description Liquid
Color/Form Colorless liquid
Boiling Point 230 °C
Melting Point -80 °C
Solubility In water, 7.04X10-5 mg/L at 25 °C
Density 0.8755 g/cu cm at 20 °C
Vapor Pressure 4.50X10-2 mm Hg at 25 °C (extrapolated)
LogP log Kow = 9.41
Stability/Shelf Life Stable under recommended storage conditions.
Decomposition When heated to decomposition it emits acrid smoke and irritating vapors.
Viscosity Maintains about the same viscosity over a wide temperature range
Heat of Vaporization 50.3 kJ/mol
Refractive Index Index of refraction: 1.3925 at 20 °C/D
Kovats Retention Index 1202.9 1176
Other Experimental Properties Stable. Inert to most chemical reagents and rubber
Chemical Classes Metals -> Metalloid Compounds (Silicon)

SAFETY INFORMATION

Signal word Warning
Pictogram(s)

Exclamation Mark
Irritant
GHS07
GHS Hazard Statements H315:Skin corrosion/irritation
H319:Serious eye damage/eye irritation
H335:Specific target organ toxicity, single exposure;Respiratory tract irritation
Precautionary Statement Codes P261:Avoid breathing dust/fume/gas/mist/vapours/spray.
P264:Wash hands thoroughly after handling.
P264:Wash skin thouroughly after handling.
P271:Use only outdoors or in a well-ventilated area.
P280:Wear protective gloves/protective clothing/eye protection/face protection.
P302+P352:IF ON SKIN: wash with plenty of soap and water.
P305+P351+P338:IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing.

COMPUTED DESCRIPTORS

Molecular Weight 384.84 g/mol
Hydrogen Bond Donor Count 0
Hydrogen Bond Acceptor Count 4
Rotatable Bond Count 8
Exact Mass 384.14599230 g/mol
Monoisotopic Mass 384.14599230 g/mol
Topological Polar Surface Area 36.9 Ų
Heavy Atom Count 21
Formal Charge 0
Complexity 313
Isotope Atom Count 0
Defined Atom Stereocenter Count 0
Undefined Atom Stereocenter Count 0
Defined Bond Stereocenter Count 0
Undefined Bond Stereocenter Count 0
Covalently-Bonded Unit Count 1
Compound Is Canonicalized Yes

PRODUCT INTRODUCTION

description

Dodecamethylpentasiloxane is an organosiloxane that is pentasiloxane in which all the hydrogens have been replaced by methyl groups. Metabolite observed in cancer metabolism. It has a role as a human metabolite.