1,1,3,3-Tetramethyldisiloxane, 97%

Description

CAS: 3277-26-7 | C4H12OSi2 | 132.309 g/mol

1,1,3,3-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.

This Thermo Scientific Chemicals brand product was originally part of the Alfa Aesar product portfolio. Some documentation and label information may refer to the legacy brand. The original Alfa Aesar product / item code or SKU reference has not changed as a part of the brand transition to Thermo Scientific Chemicals.

Applications
1,1,3,3-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.

Solubility
It reacts with water to produce dimethylsilanol, dimethylsilanediol and hydrogen gas.

Notes
Moisture sensitive. Keep away from sources of ignition. Store in cool place.

Specifications

Chemical Identifiers

• CAS: 3277-26-7
• Molecular Formula: C4H12OSi2
• Molecular Weight (g/mol): 132.309
• MDL Number: MFCD00008256
• InChI Key: KWEKXPWNFQBJAY-UHFFFAOYSA-N
• Synonym: 1,1,3,3-tetramethyldisiloxane, tetramethyldisiloxane, dimethylsilyl ether, bis dimethylsilyl ether, bis dimethylsilyl oxide, 1,3-dihydrotetramethyldisiloxane, sym-tetramethyldisiloxane, disiloxane, tetramethyl, dsstox_cid_30574, dsstox_gsid_52010
• PubChem CID: 6327482
• IUPAC Name: dimethylsilylideneoxonio(dimethyl)silanide
• SMILES: C[Si-](C)[O+]=[Si](C)C

• Boiling Point: 70°C to 71°C
• Melting Point: -78°C
• Quantity: 25 g
• UN Number: UN1993
• Beilstein: 1733364
• Flash Point: −26°C (−15°F)
• Solubility Information: It reacts with water to produce dimethylsilanol,dimethylsilanediol and hydrogen gas.
• Formula Weight: 134.33
• Percent Purity: 97%
• Odor: Characteristic
• Refractive Index: 1.37
• Sensitivity: Moisture sensitive
• Density: 0.76
• Chemical Name or Material: 1,1,3,3-Tetramethyldisiloxane

Safety and Handling

Hazard Category	H225
Hazard Statement	GHS H Statement H225 Highly flammable liquid and vapour.
Precautionary Statement	P210-P233-P235-P240-P241-P242-P243-P261-P271-P280-P303+P361+P353-P304+P340-P312-P370+P378q-P501c
DOTInformation	Transport Hazard Class: 3; Packing Group: II; Proper Shipping Name: FLAMMABLE LIQUIDS, N.O.S.
EINECSNumber	221-906-4
RTECSNumber	JN1000000
TSCA	Yes
Recommended Storage	Ambient temperatures; Store under Nitrogen

SDS

RUO – Research Use Only