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T7024

Sigma-Aldrich

N,N,N′,N′-Tetramethylethylenediamine

BioReagent, for molecular biology, ≥99% (GC)

Synonym(s):

1,2-Bis(dimethylamino)ethane, TEMED, TMEDA

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25 ML
€73.90
50 ML
€131.00
100 ML
€242.00

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25 ML
€73.90
50 ML
€131.00
100 ML
€242.00

About This Item

Linear Formula:
(CH3)2NCH2CH2N(CH3)2
CAS Number:
110-18-9
Molecular Weight:
116.20
Beilstein:
1732991
EC Number:
203-744-6
MDL number:
MFCD00008335
UNSPSC Code:
41105319
PubChem Substance ID:
24900242
NACRES:
NA.31
grade:
for molecular biology
Assay:
≥99% (GC)
bp:
120-122 °C (lit.)

€73.90

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grade

for molecular biology

Quality Level

200

product line

BioReagent

Assay

≥99% (GC)

expl. lim.

9.08 %

refractive index

n20/D 1.4179 (lit.)

bp

120-122 °C (lit.)

mp

−55 °C (lit.)

density

0.775 g/mL at 20 °C (lit.)

foreign activity

DNase, RNase, protease, none detected

SMILES string

CN(C)CCN(C)C

InChI

1S/C6H16N2/c1-7(2)5-6-8(3)4/h5-6H2,1-4H3

InChI key

KWYHDKDOAIKMQN-UHFFFAOYSA-N

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Application

This product is designated as molecular biology grade and is suitable for polyacrylamide gel electrophoresis (PAGE). It has been analyzed for the absence of nucleases and proteases.
TEMED is a tertiary amine that is used to catalyze the formation of free radicals from ammonium persulfate or riboflavin. TEMED-generated free radicals cause the compounds acrylamide and bis-acrylamide to polymerize and form the gel matrix polyacrylamide. Because TEMED is functional only in its free base form, low pH conditions will inhibit polymerization.[1],[2],[3]
The potential contribution of TEMED to elevated background in silver stained SDS PAGE has been studied.[4] TEMED has been used in the coating of soft polymers, such as polyacrylamide, in capillaries for investigation by atomic force microscopy.[5] Microchips containing oligonucleotides and proteins immobilized within gel pads have been prepared using TEMED.[6]
The capillary isoelectric focusing of proteins with an isoelectric point (pI) > 12 has been investigated through the use of TEMED.[7] TEMED has been used in the HPLC of small organic molecules.[8]

Quantity

Suggested use is 35 μl for 50 ml acrylamide gel solution.

Signal Word

Danger

Hazard Statements

H225,H302,H314,H331

Hazard Classifications

Acute Tox. 3 Inhalation - Acute Tox. 4 Oral - Eye Dam. 1 - Flam. Liq. 2 - Skin Corr. 1B

Storage Class Code

3 - Flammable liquids

WGK

WGK 1

Flash Point(F)

61.7 °F - closed cup

Flash Point(C)

16.5 °C - closed cup

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

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Certificates of Analysis (COA)

Lot/Batch Number
BCCM7546
BCCL1561
BCCK6320
BCCJ9691
BCCH5634

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A V Vasiliskov et al.
BioTechniques, 27(3), 592-594 (1999-09-18)
The manufacturing of microchips containing oligonucleotides and proteins immobilized within gel pads, ranging in size from 10 x 10 to 100 x 100 microns, is described. The microchips are produced by photo- or persulfate-induced copolymerization of unsaturated derivatives of biomolecules
R Barberi et al.
Journal of chromatography. B, Biomedical applications, 683(1), 3-13 (1996-08-09)
Atomic force microscopy (AFM) has been used to probe the surface of a capillary after coating with "soft" polymers, notably polyacrylamides. The aim was the investigation of the efficiency of coverage of the silica surface, so as to reduce or
Andrews, A. T.
Electrophoresis: Theory, Techniques, and Biochemical and Clinical Applications, 21-24 (1986)
Sambrook, J. and Russell, D. W.
Molecular Cloning: A Laboratory Manual, 5-5 (2001)
G Patras et al.
Electrophoresis, 20(10), 2039-2045 (1999-08-18)
A novel experimental procedure to study the factors that contribute to background silver staining in sodium dodecyl sulphate-polyacrylamide gel electrophoresis (SDS-PAGE) is described. A mechanism is proposed for background silver staining, which was found to result primarily from the redox
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Questions

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  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

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  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

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