1,1,1,3,5,5,5-Heptamethyltrisiloxane

ALDRICH/370886 - 97%

Synonym: 2,2,4,6,6-Pentamethyl-3,5-dioxa-2,4,6-trisilaheptane; 2-Hydro-1,1,1,2,3,3,3-heptamethyltrisiloxane; Bis(trimethylsiloxy)methylsilane; Heptamethylhydrotrisiloxane; Methylbis(trimethylsiloxy)silane

CAS Number: 1873-88-7
Empirical Formula (Hill Notation): C₇H₂₂O₂Si₃
Molecular Weight: 222.50
EC Number: 217-496-1
MDL Number: MFCD00048000
Linear Formula: [(CH₃)₃SiO]₂SiHCH₃
Product Type: Chemical

Catalog Number	PKG Qty.	Price


45-370886-50ML	50 mL	$146.00 1/EA	Add To Favorites
45-370886-250ML	250 mL	$156.00 1/EA	Add To Favorites

Properties
Descriptions
Safety Info.
Basic Data

assay	97%
bp	142 °C (lit.)
density	0.819 g/mL at 25 °C (lit.)
InChI	1S/C7H22O2Si3/c1-10(8-11(2,3)4)9-12(5,6)7/h10H,1-7H3
InChI key	QNWOFLWXQGHSRH-UHFFFAOYSA-N
Quality Level	100
refractive index	n20/D 1.382 (lit.)
SMILES string	C[SiH](O[Si](C)(C)C)O[Si](C)(C)C

Application:

1,1,1,3,5,5,5-Heptamethyltrisiloxane can be used for the aromatic C-H silylation of arenes in the presence of a platinum complex catalyst.
It can also be used as a reagent to synthesize:
• 3-Octyl-1,1,1,3,5,5,5-heptamethyltrisiloxane, an agricultural adjuvant and sensory performance enhancer used in cosmetic formulations.
• Isoindigo-based conjugated polymer with siloxane-terminated solubilizing group.
• Monosiloxy esters with a variety of acids.

Packaging:

50, 250 mL in glass bottle

Symbol	GHS02,GHS07
Signal word	Danger
Hazard statements	H225 - H315 - H319 - H335
Precautionary statements	P210 - P302 + P352 - P305 + P351 + P338
Hazard Codes	Xi
Risk Statements	10-36/37/38
Safety Statements	26-36
RIDADR	UN 1993BF 3 / PGII
WGK Germany	WGK 3
Flash Point(F)	71.6 °F - closed cup
Flash Point(C)	22 °C - closed cup

Purity	97%
bp	142 °C (lit.)
Density	0.819 g/mL at 25 °C (lit.)
Refractive Index	n20/D 1.382 (lit.)
UNSPSC	12352103

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