512990
2,4,6,8-Tetramethylcyclotetrasiloxane
≥98.5%, ≥99.999% trace metals basis
Synonym(s):
1,3,5,7-Cyclotetra(methylsiloxane), 1,3,5,7-Tetramethylcyclotetrasiloxane, TMCTS
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About This Item
Linear Formula:
(HSiCH3O)4
CAS Number:
Molecular Weight:
240.51
UNSPSC Code:
12352103
NACRES:
NA.23
PubChem Substance ID:
EC Number:
219-137-4
Beilstein/REAXYS Number:
1775282
MDL number:
Quality Segment
assay
≥98.5%, ≥99.999% trace metals basis
refractive index
n20/D 1.387 (lit.)
bp
134 °C (lit.)
mp
−69 °C (lit.)
density
0.986 g/mL at 25 °C (lit.)
storage temp.
2-8°C
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
General description
2,4,6,8-Tetramethylcyclotetrasiloxane is a cyclic siloxane compound, alsoknow as 1,3,5,7-cyclotetra(methylsiloxane). It is a clear, colorless liquidthat exhibits a high degree of thermal stability and low viscosity. With apurity of ≥98.5%, this compound is widely used in diverse fields, includingelectronics, coatings, and chemical manufacturing.
Application
2,4,6,8-Tetramethylcyclotetrasiloxanecan be used as a key component in the development of couplingagents for improving the properties of styrene-butadiene rubber (SBR).
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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Warning
hcodes
Hazard Classifications
Flam. Liq. 3
Storage Class
3 - Flammable liquids
flash_point_f
75.2 °F - closed cup
flash_point_c
24 °C - closed cup
ppe
Eyeshields, Faceshields, Gloves, type ABEK (EN14387) respirator filter
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