235695

Octamethylcyclotetrasiloxane

98%

• Sinónimos: 2,2,4,4,6,6,8,8-Octamethyl-1,3,5,7,2,4,6,8-tetraoxatetrasilocane, octamethyl-1,3,5,7,2,4,6,8-tetraoxatetrasilocane
• Fórmula lineal: [-Si(CH₃)₂O-]₄
• Número de CAS: 556-67-2
• Peso molecular: 296.62
• Beilstein: 1787074
• Número CE: 209-136-7
• Número MDL: MFCD00003269
• Código UNSPSC: 12352103
• ID de la sustancia en PubChem: 24853994
• NACRES: NA.23

Propiedades

• densidad de vapor: 1 (vs air)
• Nivel de calidad: 200
• Ensayo: 98%
• Formulario: liquid
• índice de refracción: n20/D 1.396 (lit.)
• bp: 175-176 °C (lit.)
• mp: 17-18 °C (lit.)
• densidad: 0.956 g/mL at 25 °C (lit.)
• cadena SMILES: C[Si]1(C)O[Si](C)(C)O[Si](C)(C)O[Si](C)(C)O1
• InChI: 1S/C8H24O4Si4/c1-13(2)9-14(3,4)11-16(7,8)12-15(5,6)10-13/h1-8H3
• Clave InChI: HMMGMWAXVFQUOA-UHFFFAOYSA-N

Descripción

Descripción general

Octamethylcyclotetrasiloxane (D4) is a volatile methylsiloxane (VMS) with a relatively low molecular weight. This silicone fluid has a silicon-oxygen bond in a cyclic arrangement and methyl groups are attached to the silicon atom. D4 can be used in the manufacture of silicone based polymers for use in medical devices and personal care products.

Aplicación

D4 can be polymerized through ring opening mechanism with a rare earth solid super acid as a catalyst for potential usage in the synthesis of vinyl coated polydimethylsiloxane (PDMS). It may also be used as a probe liquid for nuclear magnetic resonance cryoporometry (NMRC) to analyze the pore size distribution (PSD) of oil-bearing tight sandstone. Chemical vapor deposition (CVD) of D4 may be utilized for the preparation of siloxane based thin films.

Información de seguridad

• Pictogramas: GHS02,GHS08,GHS09
• Palabra de señalización: Warning
• Frases de peligro: H226,H361f,H410
• Consejos de prudencia: P202 - P210 - P233 - P240 - P273 - P308 + P313
• Clasificaciones de peligro: Aquatic Acute 1 - Aquatic Chronic 1 - Flam. Liq. 3 - Repr. 2
• Código de clase de almacenamiento: 3 - Flammable liquids
• Clase de riesgo para el agua (WGK): WGK 3
• Punto de inflamabilidad (°F): 123.8 °F - closed cup
• Punto de inflamabilidad (°C): 51 °C - closed cup
• Equipo de protección personal: Eyeshields, Gloves, type ABEK (EN14387) respirator filter