1,1,1,3,5,5,5-Heptamethyltrisiloxan

Bezeichnung:1,1,1,3,5,5,5-Heptamethyltrisiloxan

CAS-Nr1873-88-7

Englisch Name:1,1,1,3,5,5,5-Heptamethyltrisiloxane

CBNumberCB8446147

SummenformelC7H22O2Si3

Molgewicht222.5

MOL-Datei1873-88-7.mol

Synonyma

1,1,1,3,5,5,5-Heptamethyltrisiloxan

1,1,1,3,5,5,5-Heptamethyltrisiloxan physikalisch-chemischer Eigenschaften

Schmelzpunkt	<0°C
Siedepunkt	142 °C (lit.)
Dichte	0.819 g/mL at 25 °C (lit.)
Dampfdruck	8.5hPa at 25℃
Brechungsindex	n20/D 1.382(lit.)
Flammpunkt	82 °F
storage temp.	15-25°C
Löslichkeit	Chloroform (Soluble), Methanol (Slightly)
Aggregatzustand	clear liquid
Wichte	0.8136
Farbe	Colorless to Almost colorless
Wasserlöslichkeit	Miscible with acetone, ethanol, diethyl ether. Insoluble in water.
Hydrolytic Sensitivity	3: reacts with aqueous base
BRN	1748455
Stabilität	Stable. Flammable. Incompatible with strong oxidizing agents.
InChIKey	QNWOFLWXQGHSRH-UHFFFAOYSA-N
LogP	6.2 at 20℃
CAS Datenbank	1873-88-7(CAS DataBase Reference)
NIST chemische Informationen	Trisiloxane, 1,1,1,3,5,5,5-heptamethyl-,(1873-88-7)
EPA chemische Informationen	Trisiloxane, 1,1,1,3,5,5,5-heptamethyl- (1873-88-7)

Sicherheit

Kennzeichnung gefährlicher	Xi
R-Sätze:	10-36/37/38
S-Sätze:	26-36
RIDADR	UN 1993 3/PG 2
WGK Germany	3
F	10-21
TSCA	Yes
HazardClass	3
PackingGroup	II
HS Code	29319090

Gefahreninformationscode (GHS)

1,1,1,3,5,5,5-Heptamethyltrisiloxane Chemische Eigenschaften,Einsatz,Produktion Methoden

R-Sätze Betriebsanweisung:
R10:Entzündlich.
R36/37/38:Reizt die Augen, die Atmungsorgane und die Haut.
S-Sätze Betriebsanweisung:
S26:Bei Berührung mit den Augen sofort gründlich mit Wasser abspülen und Arzt konsultieren.
S36:DE: Bei der Arbeit geeignete Schutzkleidung tragen.
Beschreibung
Bis (trimethylsiloxy) methylsilane acts as an important raw material and intermediate used in organic synthesis, pharmaceutical and dyestuff. For example, it can be used for the platinum-catalyzed aromatic C-H silylation of arenes. It can also be used for the silylation of aryl iodides.
Chemische Eigenschaften
colourless liquid
Verwenden
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.
Verwenden
Bis(trimethylsiloxy)methylsilane is an important raw material and intermediate used in organic synthesis, pharmaceutical and dyestuff.
Verwenden
1,1,1,3,5,5,5-Heptamethyltrisiloxane is a Basic material for synthetic polyalkyleneoxide modified heptamethyltrisiloxane which is a kind of specific structure surfactant for pesticide additives, coating additives, etc.
Flammability and Explosibility
Flammable
Einzelnachweise
https://www.alfa.com/zh-cn/catalog/H60586/
Murata, Miki, et al. "Silylation of Aryl Iodides with 1,1,1,3,5,5,5 -Heptamethyltrisiloxane Catalyzed by Transition-Metal Complexes." Synlett 2007.09(2007):1387-1390.
Murata, Miki, et al. "Platinum-Catalyzed Aromatic C—H Silylation of Arenes with 1,1,1,3,5,5,5-Heptamethyltrisiloxane." Cheminform38.50 (2007):no-no.

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