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Sigma-Aldrich

Silicone oil

viscosity 20 cSt (25 °C)

Synonym(s):

PDMS, Polydimethylsiloxane

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About This Item

Linear Formula:
[-Si(CH3)2O-]n
CAS Number:
MDL number:
UNSPSC Code:
12162002
NACRES:
NA.23

vapor density

>1 (vs air)

vapor pressure

<5 mmHg ( 25 °C)
5 mmHg ( 20 °C)

form

viscous liquid

refractive index

n20/D 1.403 (lit.)

viscosity

20 cSt(25 °C)

bp

>140 °C/0.002 mmHg (lit.)

density

0.95 g/mL at 25 °C

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General description

Silicone oil is a liquid based siloxane that is part of the methyl silicone fluid system. It has a viscosity of 20 cSt with a refractive index of ~ 1.4 and a dielectric strength of ~ 14 kV/mm. It′s surface tension tends to increase with an increase in the viscosity.

Application

Silicone oil can be used for a variety of usages such as lubricants, antiflatulent agents, dielectric coolants, and cosmetic additives.

Storage Class Code

10 - Combustible liquids

WGK

WGK 1

Flash Point(F)

214.0 °F - closed cup

Flash Point(C)

101.1 °C - closed cup

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

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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Silicones
Moretto H, et al.
Ullmann's Encyclopedia of Industrial Chemistry (2000)
Antifoaming agents
Owen MJ
Encyclopedia of Polymer Science and Technology, 104(2), 527-535 (2001)
Mechanism of Stabilization of Silicone Oil- Water Emulsions Using Hybrid Siloxane Polymers
Mehta SC and Somasundaran P
Langmuir, 24(9), 4558-4563 (2008)
M Krutyeva et al.
Physical review letters, 110(10), 108303-108303 (2013-03-26)
We present neutron spin echo experiments that address the much debated topic of dynamic phenomena in polymer melts that are induced by interacting with a confining surface. We find an anchored surface layer that internally is highly mobile and not
Zhentian Shi et al.
Journal of the Air & Waste Management Association (1995), 63(1), 80-86 (2013-03-02)
The use of surfactants during soil washing process can create massive foam, which has a negative impact on the effective use of equipment. A series of tests was conducted to evaluate the defoaming performance of three defoamers and to investigate

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