424811
2,4,6,8-Tetramethylcyclotetrasiloxane
95%
Synonym(s):
TMCTS
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About This Item
Linear Formula:
(HSiCH3O)4
CAS Number:
Molecular Weight:
240.51
EC Number:
219-137-4
UNSPSC Code:
12352103
PubChem Substance ID:
Beilstein/REAXYS Number:
1775282
MDL number:
assay
95%
form
liquid
refractive index
n20/D 1.387 (lit.)
bp
134 °C (lit.)
mp
−69 °C (lit.)
density
0.986 g/mL at 25 °C (lit.)
SMILES string
C[SiH]1O[SiH](C)O[SiH](C)O[SiH](C)O1
InChI
1S/C4H16O4Si4/c1-9-5-10(2)7-12(4)8-11(3)6-9/h9-12H,1-4H3
InChI key
BQYPERTZJDZBIR-UHFFFAOYSA-N
Application
Compound undergoes hydrosilylation reactions.
Features and Benefits
Precursor for gate dielectrics in thin-film transistors (TFT), and is a component of photochemically formed SiOX monolayers on TiO.
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signalword
Warning
hcodes
Hazard Classifications
Flam. Liq. 3
Storage Class
3 - Flammable liquids
wgk
WGK 3
flash_point_f
75.2 °F - closed cup
flash_point_c
24 °C - closed cup
ppe
Eyeshields, Faceshields, Gloves, type ABEK (EN14387) respirator filter
Regulatory Information
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Chemistry of Materials, 5, 1687-1687 (1993)
Dae-Yoon Kim et al.
Soft matter, 11(1), 58-68 (2014-11-20)
Unconventional star-shaped liquid crystals (abbreviated as SiLCs) were successfully synthesized by chemically connecting four cyanobiphenyl anisotropic mesogens to the periphery of a super-hydrophobic and ultra-flexible cyclic tetramethyltetrasiloxane ring with flexible hexyl chains. Based on the combined experimental techniques of differential