Merck

637238

Sigma-Aldrich

二氧化硅

nanopowder, 10-20 nm particle size (BET), 99.5% trace metals basis

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别名:
二氧化硅
线性分子式:
SiO2
CAS号:
分子量:
60.08
EC 号:
MDL编号:
PubChem化学物质编号:
NACRES:
NA.23

质量水平

检测方案

99.5% trace metals basis

形式

nanopowder

粒径

10-20 nm (BET)

bp

2230 °C (lit.)

mp

>1600 °C (lit.)

密度

2.2-2.6 g/mL at 25 °C

堆积密度

0.011 g/mL

SMILES string

O=[Si]=O

InChI

1S/O2Si/c1-3-2

InChI key

VYPSYNLAJGMNEJ-UHFFFAOYSA-N

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637246805890806811
Silicon dioxide nanopowder, 10-20 nm particle size (BET), 99.5% trace metals basis

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637238

二氧化硅

Silicon dioxide nanopowder (spherical, porous), 5-20 nm particle size (TEM), 99.5% trace metals basis

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二氧化硅

Silica mesoporous, 0.5 μm particle size, pore size ~2 nm

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Silica mesoporous, 1 μm particle size, pore size ~2 nm

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二氧化硅

form

nanopowder

form

nanopowder (spherical, porous)

form

powder

form

powder

particle size

10-20 nm (BET)

particle size

5-20 nm (TEM)

particle size

0.4-0.6 μm (SEM), 0.5 μm

particle size

1 μm

bp

2230 °C (lit.)

bp

2230 °C (lit.)

bp

2230 °C (lit.)

bp

2230 °C (lit.)

mp

>1600 °C (lit.)

mp

>1600 °C (lit.)

mp

>1600 °C (lit.)

mp

>1600 °C (lit.)

density

2.2-2.6 g/mL at 25 °C

density

2.2-2.6 g/mL at 25 °C

density

-

density

-

一般描述

二氧化硅纳米粒子的折射率类似于聚合物涂层,因此它在纳米复合材料的制备中具有多种应用。热阻、电学和机械性能方面都得到了增强。二氧化硅纳米粒子可用于多种催化剂、颜料稳定、电子和传感器等领域。

应用

二氧化硅纳米粒子已被用于:
  • 研究SiO2纳米复合材料在弱光条件下的非线性光学性质。
  • 作为纳米复合海藻酸钙纤维中的纳米添加剂。
  • 作为液体聚甲基硅氧烷中的分散剂,其在低强度可见辐射场中表现出独特的光学非线性。

储存分类代码

11 - Combustible Solids

WGK

nwg

闪点(°F)

Not applicable

闪点(°C)

Not applicable

个人防护装备

dust mask type N95 (US), Eyeshields, Gloves


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