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214736

Sigma-Aldrich

Xylole

reagent grade

Synonym(e):

Xylol

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About This Item

Lineare Formel:
C6H4(CH3)2
CAS-Nummer:
1330-20-7
Molekulargewicht:
106.17
EG-Nummer:
215-535-7
MDL-Nummer:
MFCD00077264
UNSPSC-Code:
12352002
PubChem Substanz-ID:
329752157
NACRES:
NA.21
bp:
137-140 °C (lit.)
Preise und Verfügbarkeit sind derzeit nicht verfügbar.

Qualität

reagent grade

Qualitätsniveau

100

Dampfdichte

3.7 (vs air)

Dampfdruck

18 mmHg ( 37.7 °C)

Assay

≥75.0% (xylenes isomers)

Form

liquid

Selbstzündungstemp.

867 °F

Expl.-Gr.

7 %

dilution

(for analytical testing)

Verunreinigungen

≤25% ethylbenzene

Brechungsindex

n20/D 1.497 (lit.)

bp

137-140 °C (lit.)

mp (Schmelzpunkt)

-34 °C (lit.)

Dichte

0.86 g/mL at 25 °C (lit.)

SMILES String

Cc1ccc(C)cc1.Cc2cccc(C)c2.Cc3ccccc3C

InChI

1S/3C8H10/c1-7-3-5-8(2)6-4-7;1-7-4-3-5-8(2)6-7;1-7-5-3-4-6-8(7)2/h3*3-6H,1-2H3

InChIKey

MVZVDAGWAAZJPE-UHFFFAOYSA-N

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Verwandte Kategorien

Allgemeine Beschreibung

Xylole sind eine Mischung den isomeren ortho-, meta- und para-Formen von Xylol. Das dispergierte Emissionsspektrum und das Flugzeitmassenspektrum wurden beschrieben. Die Übergangsbereiche aus den S1↔ S0 Formen wurden bis 100 cm-1 ermittelt und sind auf die interne Rotation der Ringmethylgruppen zurückzuführen.[1] Zeitaufgelöste spektroskopische und gaschromatographische In-situ-FTIR-Analysen wurden durchgeführt, um Diffusionskoeffizienten, Absorptionsraten und die Isomerisierungswirkung auf HSZM-5-Oberflächen zu untersuchen.[2]

Anwendung

Xylole können im Chloramphelicolacetyltransferase(CAT)-Assay eingesetzt werden, um die CAT-Genexpression zu bewerten.[3]

Anwendung

Produkt-Nr.
Beschreibung
Preisangaben

Signalwort

Danger

Gefahreneinstufungen

Acute Tox. 4 Dermal - Acute Tox. 4 Inhalation - Aquatic Chronic 3 - Asp. Tox. 1 - Eye Irrit. 2 - Flam. Liq. 3 - Skin Irrit. 2 - STOT RE 2 Inhalation - STOT SE 3

Zielorgane

Central nervous system,Liver,Kidney, Respiratory system

Lagerklassenschlüssel

3 - Flammable liquids

WGK

WGK 2

Flammpunkt (°F)

77.0 °F - closed cup

Flammpunkt (°C)

25 °C - closed cup

Hier finden Sie alle aktuellen Versionen:

Analysenzertifikate (COA)

Lot/Batch Number
SHBS4540
SHBR8748
SHBS2114
SHBR5732
SHBR3386

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1 of 3

p-Xylen anhydrous, ≥99%

Sigma-Aldrich

296333

p-Xylen

o-Xylen anhydrous, 97%

Sigma-Aldrich

294780

o-Xylen

Xylene Substitute

Sigma-Aldrich

A5597

Xylene Substitute

K J Li et al.
Proceedings of the National Academy of Sciences of the United States of America, 95(7), 3650-3654 (1998-05-09)
Efficient and controllable expression of a transgene usually requires the presence of intron sequences and much efforts have been made to produce retrovirus vectors that can transduce and integrate genes with introns. However, this has proven difficult because the viral
A study of nonrigid aromatic molecules by supersonic molecular jet spectroscopy. I. Toluene and the xylenes.
Breen PJ, et al.
J. Chem. Phys. , 87(4), 1917-1926 (1987)
Transport and isomerization of xylenes over HZSM-5 zeolites.
Mirth G, et al.
J. Catal., 139(1), 24-33 (1993)
Anne-France le Rolle et al.
Journal of translational medicine, 13, 199-199 (2015-06-25)
Clinical therapy for metastatic colorectal cancer (CRC) remains limited, especially when the tumor harbors a KRAS mutation. This study aimed to identify prognostic biomarkers in CRC that are accessible for therapeutic inhibition. Conditioned media from human CRC epithelial cells and
Ryan P Smith et al.
Human gene therapy, 26(6), 377-385 (2015-03-27)
Much research has gone into the development of hybrid gene delivery systems that combine the broad tropism and efficient transduction of adenoviral vectors with the ability to achieve stable expression of cargo genes. In addition to gene therapy applications, such
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Chromatograms

application for HPLC

Questions

1–4 of 4 Questions  

  1. 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

      Helpful?

  2. 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

      Helpful?

  3. hello we would like to enquire if this grade of xylene (CAS 1330-20-7) is equivelant to the grade BS 458:1963

    1 answer

    1. This product is not BS 458:1963 grade. Currently, British Standard grade products are not available.

      Helpful?

  4. Does Xylenes have a shelf life

    1 answer

    1. This product is not assigned an expiration date or recommended retest date. Products with no expiration date or recommended retest date should be routinely inspected by customers to ensure they perform as expected. These products are also subject to a one year warranty from the date of shipment. For more information you may access the "Product Dating Information" document under "ADDITIONAL USEFUL DOCUMENTS ABOUT OUR PRODUCTS" at the bottom of the Quality Services page with this link: https://www.sigmaaldrich.com/life-science/quality-and-regulatory-management/quality-services.

      Helpful?

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