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634867

Sigma-Aldrich

二氧化硅

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號碼:
262-373-8
MDL號碼:
MFCD00011232
分類程式碼代碼:
12352300
PubChem物質ID:
24882697
NACRES:
NA.23

等級

optical grade

品質等級

100

化驗

99.99% trace metals basis

形狀

solid

硬度

7.0 mohs

長度 × 寬度 × 厚度

10 mm × 10 mm × 0.5 mm

折射率

n20/D 1.544 (lit.)

mp

1610 °C (lit.)

轉變溫度

Tm 573.1 °C (phase change)

密度

2.6 g/mL at 25 °C (lit.)
2.684 g/mL

SMILES 字串

O=[Si]=O

InChI

1S/O2Si/c1-3-2

InChI 密鑰

VYPSYNLAJGMNEJ-UHFFFAOYSA-N

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應用

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

特點和優勢

应用于无线通信领域的微波滤波器的出色基片。

外觀

六角形结晶（a = 4.914 Å, c = 5.405 Å）

其他說明

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%

儲存類別代碼

13 - Non Combustible Solids

水污染物質分類（WGK）

nwg

閃點（°F）

Not applicable

閃點（°C）

Not applicable

個人防護裝備

dust mask type N95 (US), Eyeshields, Gloves

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Oxygen-aided synthesis of polycrystalline graphene on silicon dioxide substrates.
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