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Merck

512990

Sigma-Aldrich

2,4,6,8-Tetramethylcyclotetrasiloxane

≥98.5%, ≥99.999% trace metals basis

Sinónimos:

1,3,5,7-Cyclotetra(methylsiloxane), 1,3,5,7-Tetramethylcyclotetrasiloxane, TMCTS

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25 ML
356,00 €
100 ML
614,00 €

356,00 €


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25 ML
356,00 €
100 ML
614,00 €

About This Item

Fórmula lineal:
(HSiCH3O)4
Número de CAS:
Peso molecular:
240.51
Beilstein:
1775282
Número CE:
Número MDL:
Código UNSPSC:
12352103
ID de la sustancia en PubChem:
NACRES:
NA.23

356,00 €


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Nivel de calidad

Ensayo

≥98.5%
≥99.999% trace metals basis

Formulario

liquid

índice de refracción

n20/D 1.387 (lit.)

bp

134 °C (lit.)

mp

−69 °C (lit.)

densidad

0.986 g/mL at 25 °C (lit.)

temp. de almacenamiento

2-8°C

cadena SMILES

C[SiH]1O[SiH](C)O[SiH](C)O[SiH](C)O1

InChI

1S/C4H16O4Si4/c1-9-5-10(2)7-12(4)8-11(3)6-9/h9-12H,1-4H3

Clave InChI

BQYPERTZJDZBIR-UHFFFAOYSA-N

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Descripción general

2,4,6,8-Tetramethylcyclotetrasiloxane is a cyclic siloxane compound, alsoknow as 1,3,5,7-cyclotetra(methylsiloxane). It is a clear, colorless liquidthat exhibits a high degree of thermal stability and low viscosity. With apurity of ≥98.5%, this compound is widely used in diverse fields, includingelectronics, coatings, and chemical manufacturing.

Aplicación

2,4,6,8-Tetramethylcyclotetrasiloxanecan be used as a key component in the development of couplingagents for improving the properties of styrene-butadiene rubber (SBR).

Características y beneficios

Precursor for gate dielectrics in thin-film transistors (TFT), and is a component of photochemically formed SiOX monolayers on TiO.

Pictogramas

Flame

Palabra de señalización

Warning

Frases de peligro

Clasificaciones de peligro

Flam. Liq. 3

Código de clase de almacenamiento

3 - Flammable liquids

Clase de riesgo para el agua (WGK)

WGK 3

Punto de inflamabilidad (°F)

75.2 °F - closed cup

Punto de inflamabilidad (°C)

24 °C - closed cup

Equipo de protección personal

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


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Certificados de análisis (COA)

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Dae-Yoon Kim et al.
Soft matter, 11(1), 58-68 (2014-11-20)
Unconventional star-shaped liquid crystals (abbreviated as SiLCs) were successfully synthesized by chemically connecting four cyanobiphenyl anisotropic mesogens to the periphery of a super-hydrophobic and ultra-flexible cyclic tetramethyltetrasiloxane ring with flexible hexyl chains. Based on the combined experimental techniques of differential

Artículos

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Hybrid organic-inorganic sol-gel materials containing silica were first called “ORMOSILs” in 1984.

Preguntas

1–2 de 2 Preguntas  
  1. How is shipping temperature determined? And how is it related to the product storage temperature?

    1 respuesta
    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 respuesta
    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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