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Merck
CN

445975

Dow Corning® silicone diffusion pump fluids

704

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About This Item

Linear Formula:
[CH3Si(C6H5)2O]2Si(CH3)2
UNSPSC Code:
41100000
PubChem Substance ID:
EC Number:
223-620-5
MDL number:
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InChI key

YFCVAZGXPLMNDG-UHFFFAOYSA-N

InChI

1S/C28H32O2Si3/c1-31(2,29-32(3,25-17-9-5-10-18-25)26-19-11-6-12-20-26)30-33(4,27-21-13-7-14-22-27)28-23-15-8-16-24-28/h5-24H,1-4H3

SMILES string

C[Si](C)(O[Si](C)(c1ccccc1)c2ccccc2)O[Si](C)(c3ccccc3)c4ccccc4

refractive index

n20/D 1.559

bp

215 °C/0.5 mmHg

density

1.07 g/mL at 25 °C

General description

For high vacuum and for fast pumping of large volumes of gas or vapor in production operations. Chemically and thermally inert fluids. General purpose for pumping large volumes of gas, vacuum range 10-5 to 10-7 torr. Also suitable for use in Aldrich swivel McLeod vacuum gauges.

Application

Single component fluid for high vacuums of 10-6 to 10-8 torr (untrapped) and 10-10 to 10-11 torr (trapped). Offers quick pumpdown.

Legal Information

Dow Corning is a registered trademark of The Dow Chemical Company or an affiliated company of Dow

pictograms

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signalword

Warning

hcodes

Hazard Classifications

Eye Irrit. 2

Storage Class

10 - Combustible liquids

wgk

WGK 3

flash_point_f

213.8 °F

flash_point_c

101 °C

Regulatory Information

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