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323136

Sigma-Aldrich

Trimethylboroxine

99%

Sinonimo/i:

2,4,6-Trimethyl-1,3,5,2,4,6-trioxatriborinane, 2,4,6-Trimethylboroxine, Methaneboronic anhydride, Trimethyl-1,3,5,2,4,6-trioxatriborinane

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About This Item

Formula empirica (notazione di Hill):
C3H9B3O3
Numero CAS:
823-96-1
Peso molecolare:
125.53
Beilstein:
1757008
Numero MDL:
MFCD00013354
Codice UNSPSC:
12352103
ID PubChem:
24859217
NACRES:
NA.22
Prezzi e disponibilità al momento non sono disponibili

Saggio

99%

Stato

liquid

Indice di rifrazione

n20/D 1.362 (lit.)

P. ebollizione

78-80 °C (lit.)

Punto di fusione

−38 °C (lit.)

Densità

0.898 g/mL at 25 °C (lit.)

Stringa SMILE

Cb1ob(C)ob(C)o1

InChI

1S/C3H9B3O3/c1-4-7-5(2)9-6(3)8-4/h1-3H3
GBBSAMQTQCPOBF-UHFFFAOYSA-N

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Applicazioni

Trimethylboroxine (TMB) is a cyclic anhydride of methyl-boronic acid. It can be been used:
  • As a derivatizing agent for gas chromatographic/mass spectrometric analysis.[1]
  • In the preparation of methylaluminoxane (MAO) which is used in the polymerization of olefins.[2]
  • As an electrolyte additive to enhance the interface stability of electrode/electrolyte.[3]
  • In methylation of aryl halides by palladium-catalyzed Suzuki-Miyaura coupling reaction.[4]
  • In the preparation of CBS (Corey, Bakshi and Shibata) catalysts for asymmetric reductions of ketones to alcohols.[5]

Prodotti correlati

N° Catalogo
Descrizione
Determinazione del prezzo

Pittogrammi

FlameCorrosion
GHS02,GHS05

Avvertenze

Danger

Indicazioni di pericolo

H225,H314

Classi di pericolo

Flam. Liq. 2 - Skin Corr. 1B

Codice della classe di stoccaggio

3 - Flammable liquids

Classe di pericolosità dell'acqua (WGK)

WGK 3

Punto d’infiammabilità (°F)

15.8 °F - closed cup

Punto d’infiammabilità (°C)

-9 °C - closed cup

Dispositivi di protezione individuale

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

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Certificati d'analisi (COA)

Lot/Batch Number
SHBR7698
SHBR6981
SHBQ3449
SHBP1506
SHBM7888

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I documenti relativi ai prodotti acquistati recentemente sono disponibili nell’Archivio dei documenti.

Visita l’Archivio dei documenti

Reactivity of metallocene catalysts for olefin polymerization: influence of activator nature and structure
Pedeutour JN
Macromolecular Rapid Communications, 22(14), 1095-1123 (2001)
Tetrahedron Asymmetry, 14, 2115-2118 (2003)
Polymer, 37, 4629-4629 (1996)
Enhanced high voltage performances of layered lithium nickel cobalt manganese oxide cathode by using trimethylboroxine as electrolyte additive
Yu Q, et al.
Electrochimica Acta, 176(14), 919-925 (2015)
Practical methylation of aryl halides by Suzuki-Miyaura coupling.
Gray M, et al.
Tetrahedron Letters, 41(32), 6237-6240 (2000)
Visualizza tutti i documenti correlati

Questions

1–2 of 2 Questions  

  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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