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D134651

Sigma-Aldrich

Dimethoxymethane

ReagentPlus®, 99%

Sinônimo(s):

Formaldehyde dimethyl acetal, Methylal

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About This Item

Fórmula linear:
CH2(OCH3)2
Número CAS:
109-87-5
Peso molecular:
76.09
Beilstein:
1697025
Número CE:
203-714-2
Número MDL:
MFCD00008495
Código UNSPSC:
12352100
ID de substância PubChem:
24893265
NACRES:
NA.21
Preço e disponibilidade não estão disponíveis no momento.

grau

reagent

Nível de qualidade

200

densidade de vapor

2.6 (vs air)

pressão de vapor

6.38 psi ( 20 °C)

linha de produto

ReagentPlus®

Ensaio

99%

Formulário

liquid

temperatura de autoignição

459 °F

Lim. expl.

17.6 %

dilution

(for general lab use)

índice de refração

n20/D 1.354 (lit.)

p.e.

41-42 °C (lit.)

pf

−105 °C (lit.)

densidade

0.86 g/mL at 25 °C (lit.)

cadeia de caracteres SMILES

COCOC

InChI

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

chave InChI

NKDDWNXOKDWJAK-UHFFFAOYSA-N

Categorias relacionadas

Descrição geral

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]

Aplicação

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]

Informações legais

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

Pictogramas

Flame
GHS02

Palavra indicadora

Danger

Frases de perigo

H225

Declarações de precaução

P210 - P233 - P240 - P241 - P242 - P243

Classificações de perigo

Flam. Liq. 2

Perigos de suplementos

EUH019

Código de classe de armazenamento

3 - Flammable liquids

Classe de risco de água (WGK)

WGK 1

Ponto de fulgor (°F)

-0.4 °F - closed cup

Ponto de fulgor (°C)

-18 °C - closed cup

Equipamento de proteção individual

Eyeshields, Faceshields, Gloves

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Certificados de análise (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)
Scandium trifluoromethanesulfonate as a recyclable catalyst for efficient methoxymethylation of alcohols.
Karimi B and Ma'mani L.
Tetrahedron Letters, 44(32), 6051-6053 (2003)
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)
Anesthesia with methylal in dogs, mice and rats.
R W VIRTUE
Anesthesiology, 12(1), 100-108 (1951-01-01)
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Questions

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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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