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87920

四甲基硅烷

Name: 四甲基硅烷
Brand: SIAL

analytical standard, suitable for NMR (spectroscopy), ACS reagent

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关于此项目

线性分子式:

Si(CH₃)₄

化学文摘社编号:

75-76-3

分子量:

88.22

UNSPSC Code:

12142201

NACRES:

NA.24

PubChem Substance ID:

329769617

EC Number:

200-899-1

Beilstein/REAXYS Number:

1696908

MDL number:

MFCD00008274

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属性

Quality Level

200

grade

ACS reagent, analytical standard

vapor pressure

11.66 psi ( 20 °C)

assay

≥99.5% (GC)

form

liquid

autoignition temp.

842 °F

refractive index

n20/D 1.358 (lit.), n20/D 1.359

bp

26-28 °C (lit.)

mp

−99 °C (lit.)

density

0.648 g/mL at 25 °C (lit.)

suitability

suitable for NMR (spectroscopy)

application(s)

environmental

format

neat

storage temp.

2-8°C

SMILES string

C[Si](C)(C)C

InChI

1S/C4H12Si/c1-5(2,3)4/h1-4H3

InChI key

CZDYPVPMEAXLPK-UHFFFAOYSA-N

说明

General description

四甲基硅烷已被国际纯粹与应用化学联合会（IUPAC）推荐为所有核素的通用参考品。它通常用作核磁共振（NMR）的参考标准品，用于测量质子的化学位移，TMS在氯仿、甲醇和二甲基亚砜等溶剂中的¹H化学位移的温度依赖性已进行了研究。

Application

四甲基硅烷可用作定量NMR（qNMR）法定量分析药用植物提取物和草药产品的内标物。它也可用作FT-IR光谱法和质子核磁共振（¹H NMR）技术研究过氧化物化学系统中等规聚丙烯交联反应的内标物。

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pictograms

GHS02

signalword

Danger

hcodes

H224

pcodes

P210 - P233 - P240 - P241 - P242 - P403 + P233

Hazard Classifications

Flam. Liq. 1

存储类别

3 - Flammable liquids

wgk

WGK 3

flash_point_f

-16.6 °F - closed cup

flash_point_c

-27 °C - closed cup

ppe

Eyeshields, Faceshields, Gloves

法规信息

危险化学品

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Variations on the chemical shift of TMS.

Roy E Hoffman

Journal of magnetic resonance (San Diego, Calif. : 1997), 163(2), 325-331 (2003-08-14)

The chemical shift of TMS is commonly assumed to be zero. However, it varies by over 1 ppm for 1H and 4 ppm for 13C and shows a correlation with the physical properties of the solvent. Using the commonly accepted

Hot filament-dissociation of (CH3)3SiH and (CH3)4Si, probed by vacuum ultra violet laser time of flight mass spectroscopy.

Ramesh C Sharma et al.

Spectrochimica acta. Part A, Molecular and biomolecular spectroscopy, 65(3-4), 787-791 (2006-03-15)

The decomposition of trimethylsilane and tetramethylsilane has been investigated for the first time, using hot wire (catalytic) at various temperatures. Trimethylsilane is catalytic-dissociated in these species SiH(2), CH(3)SiH, CH(3), CH(2)Si. Time of flight mass spectroscopy signal of these species are

Chemical shift computations on a crystallographic basis: some reflections and comments.

Robin K Harris et al.

Magnetic resonance in chemistry : MRC, 45 Suppl 1, S174-S186 (2007-12-25)

Computations for chemical shifts of molecular organic compounds using the gauge-including projector augmented wave method and the NMR-CASTEP code are reviewed. The methods are briefly introduced, and some general aspects involving the sources of uncertainty in the results are explored.

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全球贸易项目编号

货号	GTIN
87920-25ML	04061833057049