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134457

Sigma-Aldrich

二十二烷

99%

别名:

n-Docosane

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25 G
$172.00
100 G
$222.00

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25 G
$172.00
100 G
$222.00

About This Item

线性分子式:
CH3(CH2)20CH3
CAS号:
629-97-0
分子量:
310.60
Beilstein:
1702206
EC 号:
211-121-5
MDL编号:
MFCD00009348
UNSPSC代码:
12352100
PubChem化学物质编号:
24848154
NACRES:
NA.22

$172.00

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蒸汽密度

10.8 (vs air)

蒸汽压

<1 mmHg ( 21.1 °C)

方案

99%

表单

solid

沸点

369 °C (lit.)

mp

42-45 °C (lit.)

密度

0.778 g/mL at 25 °C (lit.)

SMILES字符串

CCCCCCCCCCCCCCCCCCCCCC

InChI

1S/C22H46/c1-3-5-7-9-11-13-15-17-19-21-22-20-18-16-14-12-10-8-6-4-2/h3-22H2,1-2H3

InChI key

HOWGUJZVBDQJKV-UHFFFAOYSA-N

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应用

二十二烷被用于研究薄盘样品形式的市售蜡，作为大分子晶体学同步加速器束线的可能衍射强度标准品[1]。

储存分类代码

11 - Combustible Solids

WGK

WGK 3

闪点(°F)

235.4 °F - closed cup

闪点(°C)

113 °C - closed cup

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
0000432066
0000432068
0000432068
0000432066
0000360302

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二十八烷

J Brandao-Neto et al.
Journal of synchrotron radiation, 17(1), 53-60 (2009-12-24)
A number of commercially available waxes in the form of thin disc samples have been investigated as possible diffraction intensity standards for macromolecular crystallography synchrotron beamlines. Synchrotron X-ray powder diffraction measurements show that beeswax offers the best performance of these
Cédric Pisani et al.
Nanoscale, 9(5), 1840-1851 (2016-11-20)
Magnetic mesoporous silica nanoparticles (M-MSNs) represent promising targeting tools for theranostics. Engineering the interaction of nanoparticles (NPs) with biological systems requires an understanding of protein corona formation around the nanoparticles as this drives the biological fate of nanocarriers. We investigated
Auke J Kronemeijer et al.
Small (Weinheim an der Bergstrasse, Germany), 7(11), 1593-1598 (2011-05-04)
Charge transport through alkanes and para-phenylene oligomers is investigated in large-area molecular junctions. The molecules are self-assembled in a monolayer and contacted with a top electrode consisting of poly(3,4-ethylenedioxythiophene)-poly(4-styrenesulfonic acid) (PEDOT:PSS). The complete set of J(V,T) characteristics of both saturated
H Kraack et al.
The Journal of chemical physics, 121(16), 8003-8009 (2004-10-16)
The temperature dependent phase behavior of Langmuir films of n-alkanes [CH3(CH2)(n-2)CH3, denote Cn] on mercury was studied for chain lengths 19< or =n< or =22 and temperatures 15< or =T< or =44 degrees C, using surface tensiometry and surface x-ray
Leisha M Armijo et al.
Journal of nanobiotechnology, 18(1), 35-35 (2020-02-20)
Novel methods are necessary to reduce morbidity and mortality of patients suffering from infections with Pseudomonas aeruginosa. Being the most common infectious species of the Pseudomonas genus, P. aeruginosa is the primary Gram-negative etiology responsible for nosocomial infections. Due to
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实验方案

US EPA Method 8015 (modified): GC Analysis of Diesel Range Organics (DRO) on SLB®-5ms (20 m x 0.18 mm I.D., 0.18 µm), Fast GC Analysis

Separation of Decane; Dodecane; Tetradecane; Hexadecane; Octadecane; Eicosane; Docosane; Tetracosane; Hexacosane; Octacosane

Questions

1–2 of 2 Questions  

  1. How can I determine the shelf life / expiration / retest date of this product?

    1 answer

    1. If this product has an expiration or retest date, it will be shown on the Certificate of Analysis (COA, CofA). If there is no retest or expiration date listed on the product's COA, we do not have suitable stability data to determine a shelf life. For these products, the only date on the COA will be the release date; a retest, expiration, or use-by-date will not be displayed.
      For all products, we recommend handling per defined conditions as printed in our product literature and website product descriptions. We recommend that products should be routinely inspected by customers to ensure they perform as expected.
      For products without retest or expiration dates, our standard warranty of 1 year from the date of shipment is applicable.
      For more information, please refer to the Product Dating Information document: https://www.sigmaaldrich.com/deepweb/assets/sigmaaldrich/marketing/global/documents/449/386/product-dating-information-mk.pdf

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  2. How is shipping temperature determined? And how is it related to the product storage temperature?

    1 answer

    1. Products may be shipped at a different temperature than the recommended long-term storage temperature. If the product quality is sensitive to short-term exposure to conditions other than the recommended long-term storage, it will be shipped on wet or dry-ice. If the product quality is NOT affected by short-term exposure to conditions other than the recommended long-term storage, it will be shipped at ambient temperature. As shipping routes are configured for minimum transit times, shipping at ambient temperature helps control shipping costs for our customers. For more information, please refer to the Storage and Transport Conditions document: https://www.sigmaaldrich.com/deepweb/assets/sigmaaldrich/marketing/global/documents/316/622/storage-transport-conditions-mk.pdf

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