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

Trimethyl-[methyl(trimethylsilyloxy)silyl]oxysilane

HCID 74640CAS 1873-88-7

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Grundinformationen

Standard-SMILES: C[SiH](O[Si](C)(C)C)O[Si](C)(C)C
InChIKey: QNWOFLWXQGHSRH-UHFFFAOYSA-N
Summenformel: C7H22O2Si3
Durchschnittliche Molmasse: 222,5 g/mol
Monoisotopische Masse: 222,09275953

Namen und Bezeichner

Bevorzugter Name: Trimethyl-[methyl(trimethylsilyloxy)silyl]oxysilane
IUPAC: trimethyl-[methyl(trimethylsilyloxy)silyl]oxysilane
Lokaler Name: 1,1,1,3,5,5,5-Heptamethyltrisiloxan
Englischer Name: 1,1,1,3,5,5,5-Heptamethyltrisiloxane
Summenformel: C7H22O2Si3
Molmasse: 222.5

Namen und Synonyme

trimethyl-[methyl(trimethylsilyloxy)silyl]oxysilaneC7H22O2Si31,1,1,3,5,5,5-heptamethyl trisiloxaneSCHEMBL41518HMS-991HMS-992HMS-9931,1,1,3,5,5,5-heptamethyl-trisiloxaneNS00046548H11921S023501,1,1,3,5,5,5-Heptamethyltrisiloxane, 97%

Weitere Namen anzeigen

heptamethyltrisiloxaneMDHMBIS(TRIMETHYLSILOXY)METHYLSILANE1,1,1,3,5,5,5-heptamethyl-trisiloxan40M25)CFS-887Bis(trimethyLCo-Formula CFS-887HeptametrisiloxaneBis(trimethylsiloxy)

F985918trimethyl-[methyl(trimethylsilyloxy)silyl]oxy-silaneQ27288310Polymethylhydrosiloxanes, trimethlysiloxy terminated 15-25cStPolymethylhydrosiloxanes, trimethlysiloxy terminated 24-30cStPolymethylhydrosiloxanes, trimethlysiloxy terminated 30-45cStHeptamethyl trisiloxane, United States Pharmacopeia (USP) Reference StandardMethylbis(trimethylsilyloxy)silane, 1,1,1,3,5,5,5-Heptamethylsiloxane, 1,3,3,3-Tetramethyl-1-[(Trimethylsilyl)Oxy]Disiloxanyl, 2,2,4,6,6-Pentamethyl-3,5-dioxa-2,4,6-trisilaheptane, 2-Hydro-1,1,1,2,3,3,3-heptamethyltrisiloxane, Bis(trimethylsilyloxy)methylsilane, Heptamethylhydrotrisiloxane, Heptamethyltrisiloxane, Methylbis(trimethylsiloxy)silane

Datenbank-Bezeichner

CAS: 1873-88-7
PubChem CID: 74640
DTXSID: DTXSID1038795

Eigenschaften

Berechnete Struktureigenschaften

Polarare Oberfläche (TPSA): 18,5 Å²
H-Brücken-Donoren: 0
H-Brücken-Akzeptoren: 2
Frei drehbare Bindungen: 4
Schwere Atome: 12
Formalladung: 0
Komplexität: 121

Experimentelle und physikochemische Eigenschaften

SpringerMaterials PropertiesChemical shift

Physikochemische Eigenschaften

Schmelzpunkt: 0 °C · <0°C
Siedepunkt: 142 °C · 142 °C (lit.)
Dichte: 0.819 g/mL · 0.819 g/mL at 25 °C (lit.)
Dampfdruck: 8.5 hPa · 8.5hPa at 25℃
Brechungsindex: 20 · n20/D 1.382(lit.)
Flammpunkt: 82 °F · 82 °F
storage temp.: 15 · 15-25°C
Löslichkeit: Chloroform (Soluble), Methanol (Slightly)
Aggregatzustand: clear liquid
Wichte: 0.8136 · 0.8136
Farbe: Colorless to Almost colorless
Wasserlöslichkeit: Miscible with acetone, ethanol, diethyl ether. Insoluble in water.
BRN: 1748455 · 1748455
Henry's Law Constant: 1.1 · 1.1×10-7 mol/(m3Pa) at 25℃, Ebert et al. (2023)
Stabilität: Stable. Flammable. Incompatible with strong oxidizing agents.
InChI: 1S/C7H22O2Si3/c1-10(8-11(2,3)4)9-12(5,6)7/h10H,1-7H3
InChIKey: QNWOFLWXQGHSRH-UHFFFAOYSA-N
SMILES: C[SiH](O[Si](C)(C)C)O[Si](C)(C)C
LogP: 6.2 at · 6.2 at 20℃
CAS Datenbank: 1873 · 1873-88-7(CAS DataBase Reference)
NIST chemische Informationen: 1 · Trisiloxane, 1,1,1,3,5,5,5-heptamethyl-,(1873-88-7)
EPA chemische Informationen: 1 · Trisiloxane, 1,1,1,3,5,5,5-heptamethyl- (1873-88-7)

Sicherheit und Regulatorisches

Sicherheitsdaten

F: 10-21
wgk: 3
tsca: TSCA listed
ridadr: UN 1993 3/PG 2
hs_code: 29319090
risk_code: 10-36/37/38
hazard_code: Xi
safety_code: 26-36
hazard_class: 3
packing_group: II
Speicherklasse: 3 - Flammable liquids
Hazard Classifications: Eye Irrit. 2Flam. Liq. 2Skin Irrit. 2STOT SE 3

Chemie und Industrie

Anwendungen · 2 Einträge

BeschreibungBis (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.

Verwenden1,1,1,3,5,5,5-Heptamethyltrisiloxane is a Basic material for synthetic polyalkyleneoxide modified heptamethyltrisiloxane which is a kind of specific structure surfactant for pesticide additives, coating additives, etc.