235695

Octamethylcyclotetrasiloxane

98%

• 동의어(들): 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
• Linear Formula: [-Si(CH₃)₂O-]₄
• CAS Number: 556-67-2
• Molecular Weight: 296.62
• Beilstein: 1787074
• EC Number: 209-136-7
• MDL number: MFCD00003269
• UNSPSC 코드: 12352103
• PubChem Substance ID: 24853994
• NACRES: NA.23

속성

• vapor density: 1 (vs air)
• 분석: 98%
• 양식: liquid
• refractive index: n20/D 1.396 (lit.)
• bp: 175-176 °C (lit.)
• mp: 17-18 °C (lit.)
• density: 0.956 g/mL at 25 °C (lit.)
• SMILES string: 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
• InChI key: HMMGMWAXVFQUOA-UHFFFAOYSA-N

설명

일반 설명

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.

애플리케이션

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.

안전성 정보

• 픽토그램: GHS02,GHS08,GHS09
• 신호어: Warning
• 유해 및 위험 성명서: H226,H361f,H410
• 예방조치 성명서: P202 - P210 - P233 - P240 - P273 - P308 + P313
• Hazard Classifications: Aquatic Acute 1 - Aquatic Chronic 1 - Flam. Liq. 3 - Repr. 2
• Storage Class Code: 3 - Flammable liquids
• WGK: WGK 3
• Flash Point (°F): 123.8 °F - closed cup
• Flash Point (°C): 51 °C - closed cup
• 개인 보호 장비: Eyeshields, Gloves, type ABEK (EN14387) respirator filter