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74658

1,2,4,5-四甲苯

TraceCERT®, certified reference material, qNMR standard

别名:

杜烯, 1,2,4,5-四甲苯

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关于此项目

线性分子式:
C6H2(CH3)4
化学文摘社编号:
95-93-2
分子量:
134.22
NACRES:
NA.24
PubChem Substance ID:
329765774
eCl@ss:
39011404
UNSPSC Code:
41116107
EC Number:
202-465-7
MDL number:
MFCD00008528
Beilstein/REAXYS Number:
1903393
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Quality Level

300

vapor density

4.6 (vs air)

vapor pressure

160 mmHg ( 140 °C)

description

qNMR Standard for organic solvents (6.9 ppm / 2.2 ppm)

grade

certified reference material, TraceCERT®

shelf life

limited shelf life, expiry date on the label

manufacturer/tradename

Manufactured by: Sigma-Aldrich Production GmbH, Switzerland

technique(s)

gas chromatography (GC): suitable

mp

76-80 °C (lit.)

density

0.838 g/mL at 25 °C (lit.)

application(s)

cleaning products
cosmetics
environmental
flavors and fragrances
food and beverages
personal care
pharmaceutical

format

neat

SMILES string

Cc1cc(C)c(C)cc1C

InChI

1S/C10H14/c1-7-5-9(3)10(4)6-8(7)2/h5-6H,1-4H3

InChI key

SQNZJJAZBFDUTD-UHFFFAOYSA-N

General description

该有证标准物质（CRM）是根据ISO/IEC 17025和ISO 17034生产和认证的。该CRM可追溯到来自NMI的原材料，如 NIST或NMIJ。
证书上给出了定量核磁共振法认证的内容，包括不确定性和失效日期。
下载证书网址：http://www.sigma-aldrich.com。

有关合适的仪器技术的更多信息，请参阅产品的分析证书。

查看我们完整的定量NMR标准品（qNMR标准品）系列。
This certified reference material (CRM) is produced in accordance with ISO 17034 and characterized in accordance with ISO/IEC 17025. This CRM is traceable to SI unit kg and measured against primary material from a National Metrology Institute (NMI), e.g. NIST.

Please visit ISO certificates and Site Quality Self-Assessments to access the current certificates of accreditation.

Search & download your certificate here.

Other Notes

化学位移：2.3 + 7.0 ppm（根据实验条件，化学位移可能略有不同）
合适的NMR溶剂：CDCl3
在我们的NMR在线平台ChemisTwin®上可以找到本品对应的数字化标准物质。您可使用ChemisTwin®上的数字等效品鉴定您的样品并进行定量分析（使用数字化外标）。可查看该物质的NMR谱图，只需点击几次鼠标，就能进行在线样品比对。欢迎点击了解更多，开启免费试用之旅。

Legal Information

TraceCERT is a registered trademark of Merck KGaA, Darmstadt, Germany

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pictograms

FlameEnvironment
GHS02,GHS09

signalword

Danger

hcodes

H228,H410

Hazard Classifications

Aquatic Acute 1 - Aquatic Chronic 1 - Flam. Sol. 1

存储类别

4.1B - Flammable solid hazardous materials

wgk

WGK 1

flash_point_f

165.2 °F - closed cup

flash_point_c

74 °C - closed cup

法规信息

危险化学品

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商品

High-Performance Quantitative H-1 NMR

The signal ratio of two different protons can be measured with tremendous precision, which enables the generation of certified reference materials for use as qNMR standards.

ChemisTwin® Portal FAQ

Learn about ChemisTwin® Portal, an online analytical spectra interpretation tool. Discover its NMR lab benefits, workflow integration, and user responsibilities. Explore dRMs, algorithm accuracy, data formats, subscription possibilities, and more.

NMR Chemical Shifts of Impurities

NMR shift charts assist in identifying impurities in deuterated solvents, aiding accurate chemical analysis.

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ChemisTwin™ & Digital Reference materials (dRMs)

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J-B Ramond et al.
Letters in applied microbiology, 60(4), 359-366 (2014-12-17)
Normalization is a procedure classically employed to detect rare sequences in cellular expression profiles (i.e. cDNA libraries). Here, we present a normalization protocol involving the direct treatment of extracted environmental metagenomic DNA with S1 nuclease, referred to as normalization of
A Pawlukojć et al.
Spectrochimica acta. Part A, Molecular and biomolecular spectroscopy, 63(3), 766-773 (2005-08-16)
The results of inelastic neutron scattering (INS), Raman and infrared (IR) studies on 1,2,4,5-tetramethylbenzene (durene), tetramethylpyrazine (TMP) and tetramethyl-1,4-benzoquinone (TMBQ) in the solid state are reported. The observed frequencies are analyzed on the basis of DFT calculations. The low frequency
S David et al.
Journal of inorganic biochemistry, 28(2-3), 125-135 (1986-10-01)
Solution equilibria are presented for in situ reactions of the type FeII(porp) + B----FeII(porp)B, where porp represents the dianion of some durene-capped porphyrins with variable length linking methylene straps, and B is 1-methyl, 1,2-dimethyl, or 1,5-dicyclohexylimidazole. Increasing distortion of the
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全球贸易项目编号

货号GTIN
74658-1G04061834352419