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文件

634867

二氧化硅

Name: 二氧化硅
Brand: ALDRICH

single crystal substrate, optical grade, 99.99% trace metals basis, L × W × thickness 10 mm × 10 mm × 0.5 mm

别名:

方石英, 石英, 砂石, 硅石

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About This Item

线性分子式:

SiO₂

CAS号:

60676-86-0

分子量:

60.08

EC 号:

262-373-8

MDL编号:

MFCD00011232

UNSPSC代码:

12352303

PubChem化学物质编号:

24882697

NACRES:

NA.23

等级

optical grade

质量水平

100

检测方案

99.99% trace metals basis

形式

solid

硬度

7.0 mohs

长度 × 宽度 × 厚度

10 mm × 10 mm × 0.5 mm

折射率

n20/D 1.544 (lit.)

mp

1610 °C (lit.)

转变温度

T_m 573.1 °C (phase change)

密度

2.6 g/mL at 25 °C (lit.)
2.684 g/mL

SMILES字符串

O=[Si]=O

InChI

1S/O2Si/c1-3-2

InChI key

VYPSYNLAJGMNEJ-UHFFFAOYSA-N

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应用

SiO₂因其绝佳的热机械性能而作为基质材料用于一系列的应用，包括：

气相沉积
相沉积
原子力显微镜探针（AFM）
旋涂
电子设备

特点和优势

应用于无线通信领域的微波滤波器的出色基片。

外形

六角形结晶（a = 4.914 Å, c = 5.405 Å）

其他说明

比热 = 0.18 cal/g；热电常数 = 1200μV/°C @ 300 °C；热导率 = 0.0033 cal/cm°C；热膨胀 (x10^-6) = α；₁₁: 13.71, α₃₃: 7.48；Q值 = 1.8 × 10⁶ min；音速，SAW = 3160 m/sec; 频率常数，BAW = 1661 kHz/mm；压电耦合 = K² BAW: 0.65%, SAW: 0.14%

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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