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Merck

31623

Sigma-Aldrich

二氧化硅

washed and calcined, analytical reagent

别名:

白石英砂, 二氧化硅, 石英

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About This Item

线性分子式:
SiO2
CAS号:
分子量:
60.08
EC 号:
MDL编号:
UNSPSC代码:
12352300
PubChem化学物质编号:
NACRES:
SB.52

表单

granular

质量水平

质量

washed and calcined, analytical reagent

杂质

≤0.2% Soluble in HCl

缺失

≤0.1% loss on ignition

造粒

0.1-0.5 mm (min.70%)

痕量阴离子

chloride (Cl-): ≤100 mg/kg

SMILES字符串

O=[Si]=O

InChI

1S/O2Si/c1-3-2

InChI key

VYPSYNLAJGMNEJ-UHFFFAOYSA-N

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一般描述

Silicon dioxide (SiO2) exists in three crystalline forms, namely quartz, tridymite and cristobalite. It reacts with hydrofluoric acid to form silicon tetrafluoride (SiF4) and water. Silicates are formed on reacting SiO2 with alkali melts. SiO2 is the main component in glass, brick and concrete and also forms the insulator in silicon devices. The alteration of the surface of SiO2 with (3-aminopropyl)triethoxysilane (APTES) for binding lactate dehydrogenase (LDH) to form an amino layer has been reported. The silicon-silicon dioxide structure has been investigated at liquid nitrogen temperature by electron spin resonance spectra.

应用

Silicon dioxide may be used to produce silicon by electrochemical reduction in the presence of calcium chloride (CaCl2) electrolyte.

储存分类代码

13 - Non 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


历史批次信息供参考:

分析证书(COA)

Lot/Batch Number

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访问文档库

Study of silicon-silicon dioxide structure by electron spin resonance I.
Nishi Y.
Japanese Journal of Applied Physics, 10(1), 52-52 (1971)
Pinpoint and bulk electrochemical reduction of insulating silicon dioxide to silicon.
Nohira T, et al.
Nature Materials, 2(6), 397-401 (2003)
Electronic structure of silicon dioxide (a review).
Nekrashevich SS and Gritsenko VA.
Physics of the Solid State, 56(2), 207-222 (2014)
Eagleson M.
Concise Encyclopedia Chemistry, 983-984 (1994)
Surface modification of silicon dioxide, silicon nitride and titanium oxynitride for lactate dehydrogenase immobilization.
Saengdee P, et al.
Biosensors And Bioelectronics, 67, 134-138 (2015)

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