Product Name: Tetramethyldisiloxane

Alias: Tetramethyl dihydro disiloxane （TMDSO）

Chemical Informations

Main Composition:1,1,3,3-Tetramethyldisiloxane

Molecular Formula: C₄H₁₄OSi₂

Cas No.:3277-26-7

EINECS: 221-906-4

Product Description:

Chemically identified as 1,1,3,3-Tetramethyldisiloxane (abbreviated as TMDSO or H2), is a highly clear, volatile reactive fluid possessing terminal silicon-hydrogen (Si-H) bonds at both polar extremes.It serves as the paramount terminal regulator (end-blocker) for producing hydride-terminated silicone oils and block-copolymer intermediates. Its Si-H end-groups undergo smooth, flawless hydrosilylation with vinyl resins to form ultra-resilient, stress-relaxed polyorganosiloxane structures.

Typical properties:

Appearance: colorless transparent liquid

Content:≥99%

Refractive index:1.3669-1.3710

Boiling Point: 69-71°C

Flashing point:-12 ℃

Melting point: -78℃

Density (25℃)g/cm3：0.76

Water solubility:insoluble in water.

Hydrolytic Sensitivity：reacts with aqueous base

Applications:

Hydride Blocker Intermediate: The primary linear end-capping building block to synthesize hydride-terminated (Si-H terminated) silicone fluids used in addition-cure networks.

Block Copolymer Synthesis: Reacts via hydrosilylation with organic polymers (like allyl-terminated polyethers or polyurethanes) to form advanced soft-tactile block architectural plastics.

Reducing Agent: Utilized in precision organic pharma and catalyst-controlled chemical reductions.

Package ：Steel plastic composite drum.130KG or 140KG/drum.