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D134651

Sigma-Aldrich

Dimethoxymethane

ReagentPlus®, 99%

Sinónimos:

Formaldehyde dimethyl acetal, Methylal

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About This Item

Fórmula lineal:
CH2(OCH3)2
Número de CAS:
109-87-5
Peso molecular:
76.09
Beilstein:
1697025
Número CE:
203-714-2
Número MDL:
MFCD00008495
Código UNSPSC:
12352100
ID de la sustancia en PubChem:
24893265
NACRES:
NA.21
bp:
41-42 °C (lit.)
En este momento no podemos mostrarle ni los precios ni la disponibilidad

grado

reagent

Nivel de calidad

200

densidad de vapor

2.6 (vs air)

presión de vapor

6.38 psi ( 20 °C)

Línea del producto

ReagentPlus®

Ensayo

99%

Formulario

liquid

temp. de autoignición

459 °F

lim. expl.

17.6 %

dilution

(for general lab use)

índice de refracción

n20/D 1.354 (lit.)

bp

41-42 °C (lit.)

mp

−105 °C (lit.)

densidad

0.86 g/mL at 25 °C (lit.)

cadena SMILES

COCOC

InChI

1S/C3H8O2/c1-4-3-5-2/h3H2,1-2H3

Clave InChI

NKDDWNXOKDWJAK-UHFFFAOYSA-N

Categorías relacionadas

Descripción general

Dimethoxymethane (DMM, methylal) is a biodegradable dimethyl acetal. It can be synthesized by acid catalyzed condensation of formaldehyde with methanol. It is amphiphilic in nature with low viscosity, surface tension and boiling point. It is a flammable, highly volatile solvent with good dissolving power.[1] DMM is considered as a potential alternative fuel and fuel additive due to its high oxygen content and its ability to enhance the combustion characteristics of diesel and petrol. Its thermal diffusivity has been determined by photoacoustic method.[2] Analysis of the molecular structure of DMM by electron diffraction technique shows that it has C2 symmetry with a gauche-gauche conformation.[3]

Aplicación

Dimethoxymethane (Formaldehyde dimethyl acetal) may be used in the synthesis of methoxymethyl (MOM) ethers.[4][5][6] It may also be used as an external cross-linker to form microporous polymers.[7]

Información legal

ReagentPlus is a registered trademark of Merck KGaA, Darmstadt, Germany

Pictogramas

Flame
GHS02

Palabra de señalización

Danger

Frases de peligro

H225

Clasificaciones de peligro

Flam. Liq. 2

Riesgos supl.

EUH019

Código de clase de almacenamiento

3 - Flammable liquids

Clase de riesgo para el agua (WGK)

WGK 1

Punto de inflamabilidad (°F)

-0.4 °F - closed cup

Punto de inflamabilidad (°C)

-18 °C - closed cup

Equipo de protección personal

Eyeshields, Faceshields, Gloves

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Certificados de análisis (COA)

Lot/Batch Number
SDBB2146
STBK5987
STBK1803
MKCN4287
STBJ7855

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The molecular structure of dimethoxymethane.
Astrup EE.
Acta Chemica Scandinavica, 27(9), 3271-3276 (1973)
A photoacoustic study on Dimethoxymethane.
Bama GK and Ramachandran K.
AIP Conference Proceedings, 1004, 191-191 (2008)
An efficient protocol for the preparation of MOM ethers and their deprotection using zirconium (IV) chloride.
Sharma GVM, et al.
Tetrahedron Letters, 45(50), 9229-9232 (2004)
A new strategy to microporous polymers: knitting rigid aromatic building blocks by external cross-linker.
Li B, et al.
Macromolecules, 44(8), 2410-2414 (2011)
Highly efficient and selective methoxymethylation of alcohols and phenols catalyzed by high-valent tin (IV) porphyrin.
Gharaati S, et al.
Inorgorganica Chimica Acta, 363(9), 1995-2000 (2010)
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Questions

1–2 of 2 Questions  

  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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