235695
八甲基环四硅氧烷
98%
别名:
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
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关于此项目
线性分子式:
[-Si(CH3)2O-]4
化学文摘社编号:
分子量:
296.62
Beilstein:
1787074
EC 号:
MDL编号:
UNSPSC代码:
12352103
PubChem化学物质编号:
NACRES:
NA.23
蒸汽密度
1 (vs air)
质量水平
方案
98%
表单
liquid
折射率
n20/D 1.396 (lit.)
沸点
175-176 °C (lit.)
mp
17-18 °C (lit.)
密度
0.956 g/mL at 25 °C (lit.)
SMILES字符串
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
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一般描述
八甲基环四硅氧烷（D4）是一种分子量相对较低的挥发性甲基硅氧烷（VMS）。该硅酮流体具有环状排列的硅-氧键，并且其中甲基连接至硅原子上。D4可用于制造用于医疗设备和个人护理产品的有机硅基聚合物。
应用
以稀土固体超强酸为催化剂，D4可通过开环聚合，用于乙烯基包覆聚二甲基硅氧烷（PDMS）的合成。它也可以用作核磁共振低温法（NMRC）的探测液，以分析含油致密砂岩的孔径分布（PSD）。D4的化学气相沉积（CVD）可用于制备基于硅氧烷的薄膜。
警示用语：
Warning
危险声明
危险分类
Aquatic Acute 1 - Aquatic Chronic 1 - Flam. Liq. 3 - Repr. 2
储存分类代码
3 - Flammable liquids
WGK
WGK 3
闪点(°F)
123.8 °F - closed cup
闪点(°C)
51 °C - closed cup
个人防护装备
Eyeshields, Gloves, type ABEK (EN14387) respirator filter
法规信息
危险化学品
此项目有
Stephanie Watermann et al.
Metabolites, 11(1) (2021-01-13)
1H NMR spectroscopy, in combination with chemometric methods, was used to analyze the methanol/acetonitrile (1:1) extract of walnut (Juglans Regia L.) regarding the geographical origin of 128 authentic samples from different countries (France, Germany, China) and harvest years (2016-2019). Due
Applying octamethylcyclotetrasiloxane as a probe liquid for characterizing the pore size distribution of oil-bearing tight sandstones by nuclear magnetic resonance cryoporometry.
Liu Biao, et al.
Marine and Petroleum Geology, 88(2), 814-825 (2017)
Hot-filament chemical vapor deposition of organosilicon thin films from hexamethylcyclotrisiloxane and octamethylcyclotetrasiloxane.
Lewis HGP
Journal of the Electrochemical Society, 148(12), F212-F220 (2001)
Photocatalytic oxidation of octamethylcyclotetrasiloxane (D4): Towards a better understanding of the impact of volatile methyl siloxanes on photocatalytic systems.
Lamaa L, et al.
Applied Catalysis. B, Environmental, 156, 438-446 (2014)
J M McKim et al.
Toxicological sciences : an official journal of the Society of Toxicology, 63(1), 37-46 (2001-08-18)
The cyclic siloxane octamethylcyclotetrasiloxane (D4) and the linear siloxane hexamethyldisiloxane (HMDS) have numerous industrial and consumer applications and thus have the potential for human exposure. The present study was undertaken to examine potential estrogenic and antiestrogenic activities of D4 and
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