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Key Documents

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Safety Information

214736

Sigma-Aldrich

Xylenes

reagent grade

Synonym(s):

Xylene mixture of isomers

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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 Code:
12352002
PubChem Substance ID:
329752157
NACRES:
NA.21
grade:
reagent grade
bp:
137-140 °C (lit.)
vapor pressure:
18 mmHg ( 37.7 °C)

CN¥98,937.16

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grade

reagent grade

vapor density

3.7 (vs air)

vapor pressure

18 mmHg ( 37.7 °C)

Assay

≥75.0% (xylenes isomers)

form

liquid

autoignition temp.

867 °F

expl. lim.

7 %

dilution

(for analytical testing)

impurities

≤25% ethylbenzene

refractive index

n20/D 1.497 (lit.)

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product line

MISSION®

product line

MISSION®

product line

MISSION®

product line

MISSION®

technique(s)

capture ELISA: 5 × 108 TU/mL using p24

technique(s)

capture ELISA: 5 x 108 TU/mL using p24

technique(s)

capture ELISA: 5 x 108 TU/mL using p24

technique(s)

capture ELISA: 5 x 108 TU/mL using p24

storage temp.

−70°C

storage temp.

−70°C

storage temp.

−70°C

storage temp.

−70°C

shipped in

dry ice

shipped in

dry ice

shipped in

dry ice

shipped in

dry ice

Quality Level

200

Quality Level

200

Quality Level

200

Quality Level

200

General description

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]

Application

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

Signal Word

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

Target Organs

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

Regulatory Information

危险化学品

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    SHBR5732
    SHBR3386

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    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
    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)
    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

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