[B23697] CAS 3277-26-7 | 1,1,3,3-Tetramethyldisiloxane, 97%

CAS : 3277-26-7
UN# : UN1993
MDL : MFCD00008256
Hazard Class : 3
EINECS : 221-906-4
Packing Group : II

Chemical Properties

Formula : C4H14OSi2
Formula weight : 134.33
Melting Point : -78°
Boiling Point : 70-71° Flash point: -26°(-15°F)
Density : 0.760
Refractive Index : 1.3700
Sensitivity : Moisture Sensitive. Store under Nitrogen. Ambient temperatures.
Form : Liquid
Solubility : It reacts with water to produce dimethylsilanol, dimethylsilanediol and hydrogen gas.

Literature References

Reducing agent: In the presence of TMS chloride and either LiBr or NaI, aromatic aldehydes are reduced directly to benzyl halides: Tetrahedron Lett., 25, 1103 (1984). With a Pd(0) catalyst, acetylenes are reduced to olefins (mainly cis): Tetrahedron Lett., 30, 4675 (1989). Forms polymers via hydrosilylation of alkadienes and and alkynes. In the presence of a catalytic amount of titanium isopropoxide, secondary and tertiary phosphine oxides can be reduced to the corresponding phosphines in high yield, avoiding pyrophoric reagents: Synlett, 1545 (2007).

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.

Grade Specifications

GHS Hazard and Precautionary Statements

Hazard Statements : H225Highly flammable liquid and vapour.
Precautionary Statements : P210-P243-P403+P233Keep away from heat/sparks/open flames/hot surfaces. – No smoking.Take precautionary measures against static discharge.Store in a well-ventilated place. Keep container tightly closed.Other References:Beilstein: 1733364UN#: UN1993