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O0761

Octamethylcyclotetrasiloxane

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About This Item

Linear Formula:
[-Si(CH3)2O-]4
CAS Number:
556-67-2
Molecular Weight:
296.62
EC Number:
209-136-7
UNSPSC Code:
12352103
MDL number:
MFCD00003269
Beilstein/REAXYS Number:
1787074
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vapor density

1 (vs air)

form

liquid

refractive index

n20/D 1.396 (lit.)

bp

175-176 °C (lit.)

mp

17-18 °C (lit.)

density

0.956 g/mL at 25 °C (lit.)

storage temp.

2-8°C

SMILES string

C[Si]1(C)O[Si](C)(C)O[Si](C)(C)O[Si](C)(C)O1

InChI

1S/C8H24O4Si4/c1-13(2)9-14(3,4)11-16(7,8)12-15(5,6)10-13/h1-8H3

InChI key

HMMGMWAXVFQUOA-UHFFFAOYSA-N

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Warning

Hazard Classifications

Aquatic Acute 1 - Aquatic Chronic 1 - Flam. Liq. 3 - Repr. 2

Storage Class

3 - Flammable liquids

wgk

WGK 3

flash_point_f

123.8 °F - closed cup

flash_point_c

51 °C - closed cup

Regulatory Information

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Certificates of Analysis (COA)

Lot/Batch Number
055H1281
033K1159

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