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214736

Sigma-Aldrich

Xylenes

reagent grade

동의어(들):

Xylene mixture of isomers

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크기 선택

1 L
₩157,731
4 L
₩249,487

₩157,731

출고 가능일2025년 4월 24일세부사항

벌크 견적 요청
모든 사진(2)

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보기 변경
1 L
₩157,731
4 L
₩249,487

About This Item

Linear Formula:
C6H4(CH3)2
CAS Number:
1330-20-7
Molecular Weight:
106.17
EC Number:
215-535-7
MDL number:
MFCD00077264
UNSPSC 코드:
12352002
PubChem Substance ID:
329752157
NACRES:
NA.21
bp:
137-140 °C (lit.)
vapor pressure:
18 mmHg ( 37.7 °C)

₩157,731

출고 가능일2025년 4월 24일세부사항

벌크 견적 요청

Grade

reagent grade

Quality Level

100

vapor density

3.7 (vs air)

vapor pressure

18 mmHg ( 37.7 °C)

분석

≥75.0% (xylenes isomers)

양식

liquid

autoignition temp.

867 °F

expl. lim.

7 %

dilution

(for analytical testing)

불순물

≤25% ethylbenzene

refractive index

n20/D 1.497 (lit.)

bp

137-140 °C (lit.)

mp

-34 °C (lit.)

density

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

InChI key

MVZVDAGWAAZJPE-UHFFFAOYSA-N

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관련 카테고리

일반 설명

Xylenes is the mixture of isomeric ortho-, meta- and para-forms of xylene. Its dispersed emission and time of flight mass spectra has been reported. Transitions from S1 ↔ S0 states have been found to be within the range of 100cm-1 and were reported to be arising due to the internal rotation of ring methyl groups.[1] Time-resolvedin situ FTIR spectroscopic and gas chromatographic studies have been carried out to study its diffusion coefficients, adsorption rates and isomerization efficacy over HSZM-5 surfaces.[2]

애플리케이션

Xylenes may be employed in chloramphenicol acetyltransferase (CAT) assay to evaluate the CAT gene expression.[3]

애플리케이션

제품 번호
설명
가격

픽토그램

FlameHealth hazardExclamation mark
GHS02,GHS08,GHS07

신호어

Danger

Hazard Classifications

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

표적 기관

Central nervous system,Liver,Kidney, Respiratory system

Storage Class Code

3 - Flammable liquids

WGK

WGK 2

Flash Point (°F)

77.0 °F - closed cup

Flash Point (°C)

25 °C - closed cup

가장 최신 버전 중 하나를 선택하세요:

시험 성적서(COA)

Lot/Batch Number
SHBS7319
SHBS4540
SHBR8748
SHBS2114
SHBR5732

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이미 열람한 고객

Slide 1 of 2

1 of 2

o-Xylene anhydrous, 97%

Sigma-Aldrich

294780

o-Xylene

Xylene Substitute

Sigma-Aldrich

A5597

Xylene Substitute

Transport and isomerization of xylenes over HZSM-5 zeolites.
Mirth G, et al.
J. Catal., 139(1), 24-33 (1993)
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)
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
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

질문

1–4 / 4 질문  

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

    1 답변

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

    1 답변

    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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  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 답변

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

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  4. Does Xylenes have a shelf life

    1 답변

    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.

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