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T24503

Sigma-Aldrich

Tetramethyl-Harnstoff

99%

Synonym(e):

1,1,3,3-Tetramethylharnstoff, TMU

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5 G
24,90 €
100 G
95,40 €

24,90 €

Versandbereit am23. April 2025Details

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5 G
24,90 €
100 G
95,40 €

About This Item

Lineare Formel:
(CH3)2NCON(CH3)2
CAS-Nummer:
632-22-4
Molekulargewicht:
116.16
Beilstein:
773898
EG-Nummer:
211-173-9
MDL-Nummer:
MFCD00008319
UNSPSC-Code:
12352100
PubChem Substanz-ID:
24900039
NACRES:
NA.22

24,90 €

Versandbereit am23. April 2025Details

Bulk-Bestellung anfordern

Qualitätsniveau

200

Assay

99%

Brechungsindex

n20/D 1.451 (lit.)

bp

177 °C (lit.)
62-63 °C/12 mmHg (lit.)

mp (Schmelzpunkt)

−1 °C (lit.)

Dichte

0.968 g/mL at 20 °C (lit.)

SMILES String

CN(C)C(=O)N(C)C

InChI

1S/C5H12N2O/c1-6(2)5(8)7(3)4/h1-4H3

InChIKey

AVQQQNCBBIEMEU-UHFFFAOYSA-N

Angaben zum Gen

human ... EPHX2(2053)
mouse ... Ephx2(13850)

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Verwandte Kategorien

Anwendung

  • Role of Tetramethylurea in Synthesizing Mesoporous Alumina: Tetramethylurea was used to synthesize mesoporous alumina via a hydrothermal method, affecting pore structure and thermal stability (Ghosh et al., 2014).

Signalwort

Danger

Gefahreneinstufungen

Acute Tox. 4 Oral - Eye Dam. 1 - Repr. 1B - Skin Irrit. 2

Lagerklassenschlüssel

6.1C - Combustible acute toxic Cat.3 / toxic compounds or compounds which causing chronic effects

WGK

WGK 3

Flammpunkt (°F)

167.0 °F - closed cup

Flammpunkt (°C)

75 °C - closed cup

Persönliche Schutzausrüstung

Eyeshields, Faceshields, Gloves, type ABEK (EN14387) respirator filter

Hier finden Sie alle aktuellen Versionen:

Analysenzertifikate (COA)

Lot/Batch Number
WXBF1291V
WXBF1591V
WXBD8401V
WXBD5471V
WXBD4845V

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1,3-Dimethyl-2-imidazolidinon absolute, over molecular sieve (H2O ≤0.04%), ≥99.5% (GC)

Sigma-Aldrich

40725

1,3-Dimethyl-2-imidazolidinon

Y L A Rezus et al.
Physical review letters, 99(14), 148301-148301 (2007-10-13)
We have used femtosecond midinfrared spectroscopy to study the orientational mobility of water molecules in the hydration shells of hydrophobic groups. Our results show that hydrophobic groups are surrounded by a number of water molecules that display much slower orientational
F A Sylvester et al.
Infection and immunity, 64(4), 1420-1425 (1996-04-01)
Piliated Burkholderia (formerly Pseudomonas) cepacia from sputa of cys tic fibrosis patients in Toronto, Canada, were shown earlier to bind to purified mucins and to a protein receptor on epithelial cells via a 22-kDa adhesin located on unique cable pili.
Klaas-Jan Tielrooij et al.
Journal of the American Chemical Society, 132(44), 15671-15678 (2010-10-19)
We study the influence of the amphipilic compound tetramethylurea (TMU) on the dynamical properties of water, using dielectric relaxation spectroscopy in the regime between 0.2 GHz and 2 THz. This technique is capable of resolving different water species, their relative
Artem A Bakulin et al.
Accounts of chemical research, 42(9), 1229-1238 (2009-08-18)
For decades, the enigma of the hydrophobic force has captured the imagination of scientists. In particular, Frank and Evans' idea that the hydrophobic effect was mainly due to some kind of "iceberg" formation around a hydrophobic solute stimulated many experiments
Haiyan Wei et al.
The journal of physical chemistry. B, 114(1), 557-568 (2009-11-26)
The effects of urea, tetramethyl urea (TMU), and trimethylamine N-oxide (TMAO) on the structure and dynamics of aqueous solutions are studied using molecular dynamics simulations. It was found that urea has little effects on the water-water hydrogen-bond length and angle
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  1. How can I determine the shelf life / expiration / retest date of this product?

    1 Antwort

    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 Antwort

    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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