235709
Octamethyltrisiloxane
98%
Synonym(s):
1,1,1,3,3,5,5,5-Octamethyltrisiloxane, Dimethylbis(trimethylsiloxy)silane, Pentamethyl(trimethylsiloxy)disiloxane, Pentamethyl(trimethylsilyloxy)disiloxane
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About This Item
Linear Formula:
[(CH3)3SiO]2Si(CH3)2
CAS Number:
Molecular Weight:
236.53
UNSPSC Code:
12352103
NACRES:
NA.22
PubChem Substance ID:
EC Number:
203-497-4
Beilstein/REAXYS Number:
1753063
MDL number:
vapor density
>1 (vs air)
Quality Segment
assay
98%
form
liquid
refractive index
n20/D 1.384 (lit.)
bp
153 °C (lit.)
mp
−82 °C (lit.)
density
0.82 g/mL at 25 °C (lit.)
SMILES string
C[Si](C)(C)O[Si](C)(C)O[Si](C)(C)C
InChI
1S/C8H24O2Si3/c1-11(2,3)9-13(7,8)10-12(4,5)6/h1-8H3
InChI key
CXQXSVUQTKDNFP-UHFFFAOYSA-N
General description
Octamethyltrisiloxane, commonly referred to as octamethylcyclotetrasiloxane, falls under the category of siloxanes. Its versatile applications include serving as a solvent, coupling agent, and surface tension modifier in various industries. Furthermore, it plays a significant role in the production of adhesives, sealants, and lubricants.
Application
Octamethyltrisiloxane is used as a solvent for good dispersion of styrene and polydimethylsiloxane (PDMS), which are used in the fabrication of perovskite barium titanate inverse opal films.
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signalword
Danger
hcodes
Storage Class
3 - Flammable liquids
wgk
WGK 3
flash_point_f
84.2 °F - (External MSDS)
flash_point_c
29 °C - (External MSDS)
ppe
Eyeshields, Faceshields, Gloves, type ABEK (EN14387) respirator filter
Hazard Classifications
Flam. Liq. 3 - vPvB
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