CAS 7381-30-8 2,2,7,7-Tetramethyl-3,6-dioxa-2,7-disilaoctane (HCID 81858)

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Basic information

CAS: 7381-30-8
Standard SMILES: C[Si](C)(C)OCCO[Si](C)(C)C
InChIKey: JGWFUSVYECJQDT-UHFFFAOYSA-N
Molecular formula: C8H22O2Si2
Average molar mass: 206.43 g/mol
Monoisotopic mass: 206.11583301

Names & identifiers

Preferred name: 2,2,7,7-Tetramethyl-3,6-dioxa-2,7-disilaoctane
IUPAC: trimethyl(2-trimethylsilyloxyethoxy)silane
English name: 1,2-Bis(trimethylsilyloxy)ethane
Molecular formula: C8H22O2Si2
Molecular weight: 206.43

Names & synonyms

1,2-Bis(trimethylsiloxy)ethane2,2,7,7-Tetramethyl-3,6-dioxa-2,7-disilaoctane3,6-Dioxa-2,7-disilaoctane, 2,2,7,7-tetramethyl-EINECS 230-950-3Ethylene glycol, di-TMSDTXSID90224233Ethylene glycol, 2TMS derivativeEthylene glycol, bistrimethylsilyl etherRefChem:80928DTXCID90146724230-950-3JGWFUSVYECJQDT-UHFFFAOYSA-N

Show more names

1,2-bis(trimethylsllyloxy)ethaneDK878DK376oxy)ethaneDKFELEX02321,2-Bis(trimethyL1,3-BIS(TRIMETHYLSILOXY)ETHANE

7381-30-81,2-Bis(trimethylsilyloxy)ethanetrimethyl(2-trimethylsilyloxyethoxy)silaneC8H22O2Si2Ethylenedioxybis(trimethylsilane)Ethylene glycol bis(trimethylsilyl ether)MFCD000096401,2-Bis-trimethylsilanyloxy-ethane

Database identifiers

CAS: 7381-30-8
PubChem CID: 81858
DTXSID: DTXSID90224233

Properties

Computed structural properties

Topological polar surface area: 18.5 Å²
Hydrogen bond donors: 0
Hydrogen bond acceptors: 2
Rotatable bonds: 5
Heavy atoms: 12
Formal charge: 0
Complexity: 108

Experimental & physicochemical properties

Kovats Retention Index · 2 items

993

975.7；992；990；989

Physicochemical properties

Boiling point: 165 · 165-166 °C (lit.)
Density: 0.842 g/mL · 0.842 g/mL at 25 °C (lit.)
refractive index: 20 · n20/D 1.403(lit.)
Flash point: 115 °F · 115 °F
storage temp.: Inert atmosphere,Room Temperature
form: Liquid
Specific Gravity: 0.842 · 0.842
color: Clear colorless to faint yellow
Sensitive: Moisture Sensitive
Hydrolytic Sensitivity: 7 · 7: reacts slowly with moisture/water
BRN: 1744217 · 1744217
InChI: InChI=1S/C8H22O2Si2/c1-11(2,3)9-7-8-10-12(4,5)6/h7-8H2,1-6H3
InChIKey

Safety & regulation

GHS classification

GHS Classification · 5 items

Warning

H226 (100%): Flammable liquid and vapor [Warning Flammable liquids]

P210, P233, P240, P241, P242, P243, P280, P303+P361+P353, P370+P378, P403+P235, and P501 (click each P-code to see the statement)

Aggregated GHS information provided per 41 reports by companies from 2 notifications to the ECHA C&L Inventory.；Information may vary between notifications depending on impurities, additives, and other factors. The percentage value in parenthesis indicates the notified classification ratio from companies that provide hazard codes. Only hazard codes with percentage values above 10% are shown. For more detailed information, please visit ECHA C&L website.