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281832

Sigma-Aldrich

Mesityl oxide

technical grade, 90%

Sinónimos:

4-Methyl-3-penten-2-one

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About This Item

Fórmula lineal:
(CH3)2C=CHCOCH3
Número de CAS:
141-79-7
Peso molecular:
98.14
Beilstein:
1361550
Número CE:
205-502-5
Número MDL:
MFCD00008900
Código UNSPSC:
12352100
ID de la sustancia en PubChem:
24856998
NACRES:
NA.22
En este momento no podemos mostrarle ni los precios ni la disponibilidad

grado

technical grade

Nivel de calidad

100

Ensayo

90%

Formulario

liquid

índice de refracción

n20/D 1.442 (lit.)

bp

130 °C (lit.)

mp

-41.5 °C (lit.)

densidad

0.858 g/mL at 25 °C (lit.)

grupo funcional

ketone

cadena SMILES

C\C(C)=C\C(C)=O

InChI

1S/C6H10O/c1-5(2)4-6(3)7/h4H,1-3H3

Clave InChI

SHOJXDKTYKFBRD-UHFFFAOYSA-N

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Descripción general

Zinc chloride-catalyzed condensation of mesityl oxide with ethyl acetoacetate has been reported[1].

Aplicación

Mesityl oxide has been used:
  • in the synthesis of 2,3,4,5-tetrahydro-1,3,3-trimethyldipyrrin, a crucial building block in the rational synthesis of chlorins and oxochlorins[2]
  • as neutral marker in the preparation of imidazole-coated capillary column for electrophoresis[3]

Pictogramas

FlameSkull and crossbones
GHS02,GHS06

Palabra de señalización

Danger

Clasificaciones de peligro

Acute Tox. 3 Inhalation - Acute Tox. 4 Dermal - Acute Tox. 4 Oral - Eye Irrit. 2 - Flam. Liq. 3 - Skin Irrit. 2 - STOT SE 3

Órganos de actuación

Respiratory system

Código de clase de almacenamiento

3 - Flammable liquids

Clase de riesgo para el agua (WGK)

WGK 1

Punto de inflamabilidad (°F)

87.8 °F - closed cup

Punto de inflamabilidad (°C)

31 °C - closed cup

Equipo de protección personal

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

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Certificados de análisis (COA)

Lot/Batch Number
0000404597
0000404597
SHBQ6492
SHBP9463
SHBP4761

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Condensation of mesityl oxide with acetoacetic ester.
Surmatis JD, et al.
The Journal of Organic Chemistry, 35(4), 1053-1056 (1970)
C Y Liu et al.
Journal of chromatography. A, 897(1-2), 383-392 (2000-12-29)
An imidazole-coated capillary column for electrophoresis has been prepared by means of organosilanization. With mesityl oxide as neutral marker, the results indicated that the electroosmotic flow of the bonded phase displays a dramatic difference in pH dependence in comparison with
Marcin Ptaszek et al.
Organic process research & development, 9(5), 651-659 (2005-01-01)
2,3,4,5-Tetrahydro-1,3,3-trimethyldipyrrin (1) is a crucial building block in the rational synthesis of chlorins and oxochlorins. The prior 5-step synthesis of 1 from pyrrole-2-carboxaldehyde (2) employed relatively simple and well-known reactions yet suffered from several drawbacks, including limited scale (>/= 0.5
Scott E Denmark et al.
The Journal of organic chemistry, 71(4), 1668-1676 (2006-02-14)
The mechanism of the formation of substituted quinolines from anilines and alpha,beta-unsaturated ketones has been studied by the use of 13C-labeled ketones in cross-over experiments. In the reaction of doubly labeled 13C(2,4) mesityl oxide, a 100% scrambling of the label
I Z Atamna et al.
Journal of chromatography, 588(1-2), 315-320 (1991-12-27)
Expressions are formulated for the prediction of solute migration time and resolution as a function applied voltage and buffer concentration in capillary zone electrophoresis. The resolution equation assumes that solute diffusion is the only operative zone-broadening mechanism. A resolution surface
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  1. 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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  2. 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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