CAS 3277-26-7 1,1,3,3-Tetramethyl-disiloxane (HCID 18659)

Substructure search Find similar structures

Basic information

CAS: 3277-26-7
Standard SMILES: C[SiH](C)O[SiH](C)C
InChIKey: NVYQDQZEMGUESH-UHFFFAOYSA-N
Molecular formula: C4H14OSi2
Average molar mass: 134.32 g/mol
Monoisotopic mass: 134.05831813

Names & identifiers

Preferred name: 1,1,3,3-Tetramethyl-disiloxane
IUPAC: dimethylsilyloxy(dimethyl)silane
English name: 1,1,3,3-Tetramethyldisiloxane
Molecular formula: C4H14OSi2
Molecular weight: 134.32

Names & synonyms

1,1,3,3-Tetramethyl-disiloxaneC4H14OSi2dimethylsilyloxy(dimethyl)silaneSCHEMBL114571HSi(CH3)2OSi(CH3)2H1,1,3,3-Tetramethyl disiloxane1,1,3,3-Tetramethyldisiloxane, 97%s16125NS00049561D78156Q633981681,1,3,3-Tetramethyldisiloxane, purum, >=97.0% (GC)

Show more names

TMDSOTETRAMETHYLDISILOXANETMDO(Me2HSi)2ODimethylsilyl ether5-(4,4,5,5-Tetramethyl-1,3,2-dioxaborolan-2-yl)-2-(trifluoromethyl)pyridine(CH3)2HSiOSiH(CH3)2Tetramethyldisiloxanbis(dimethylsilyl)oxideDisiloxane, 1,1,3,3-tetramethyl-

1,1,3,3-Tetramethyldisiloxane, produced by Wacker Chemie AG, Burghausen, Germany, >=98.0% (GC)

Database identifiers

CAS: 3277-26-7
PubChem CID: 18659
DTXSID: DTXSID3052010

Properties

Computed structural properties

Topological polar surface area: 9.2 Å²
Hydrogen bond donors: 0
Hydrogen bond acceptors: 1
Rotatable bonds: 2
Heavy atoms: 7
Formal charge: 0
Complexity: 39

Experimental & physicochemical properties

SpringerMaterials Properties29Si nuclear magnetic resonance spectrum

Physicochemical properties

Melting point: -78 °C · <-78°C
Boiling point: 70 · 70-71 °C (lit.)
Density: 0.76 g/mL · 0.76 g/mL at 25 °C (lit.)
vapor pressure: 250 hPa · 250 hPa (20 °C)
refractive index: 20 · n20/D 1.370(lit.)
Flash point: 14 °F · 14 °F
storage temp.: 20 °C · Store at <= 20°C.
solubility: soluble in Chloroform
pka: 11.9 · 11.9[at 20 ℃]
form: liquid
color: colorless
Specific Gravity: 0.757 · 0.757
explosive limit: 0.8 · 0.8-62.9%(V)
Viscosity

Safety & regulation

Safety data

F: 10-21
PPE: Eyeshields, Faceshields, Gloves, type ABEK (EN14387) respirator filter
wgk: 3
tsca: TSCA listed
rtecs: JN1000000
ridadr: UN 2924 3/PG 2
hs_code: 29310095
risk_code: 11-36/37/38-16
Signal word: Danger
Symbol(GHS): GHS02
hazard_code: F
safety_code: 16-26-36-9-33-29
hazard_class: 3
Storage Class: 3 - Flammable liquids
packing_group: II
Hazard statements: H225
Limited Quantities: 1.0 L (0.3 gallon) (liquid)
Excepted Quantities: Max Inner Pack (30g or 30ml) and Max Outer Pack (500g or 500ml)
REACH Registrations: Active
Hazard Classifications: Flam. Liq. 2
Autoignition Temperature: 240 °C
Precautionary statements: P210-P233-P240-P241-P242-P243

Chemistry & industry

Applications · 3 items

Description1,1,3,3-Tetramethyldisiloxane is soluble in many organic solvents, such as aromatic hydrocarbon and petroleum hydrocarbons, and so on. This product is a kind of widely used organic silicon intermediates, and usually be used as organic silicon blocking agent. Due to containing reactive Si-H groups in the molecular structure, it can be used in the synthesis of copolymer macromolecule by hydrosilylation. The synthesis of copolymer macromolecule can be made into a series of reactive silicone oil.

Uses1. Synthesis of polysiloxane containing faculties end groups. 2. Can be used for the preparation of high performance organic silicone surfactants. 3. Applicable to the production of many products, such as addition silicon rubber, silica gel, Hydrogenpolysiloxane and plastic, resin modifier, dendrite polymer special additives, etc.

Uses1,1,3,3-Tetramethyldisiloxane is used as a monomer in the production of silicone polymers or silicone resins. It is used as a precursor to prepare other organosilicon compounds. It is also utilized in non-aqueous polymer preparation as well as a laboratory reagent.