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D134651

Sigma-Aldrich

二甲氧基甲烷

ReagentPlus®, 99%

别名:

二甲醇缩甲醛, 甲缩醛

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100 ML
$67.40
1 L
$121.00
2.5 L
$234.00
18 L
$689.00

$67.40

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100 ML
$67.40
1 L
$121.00
2.5 L
$234.00
18 L
$689.00

About This Item

线性分子式:
CH2(OCH3)2
CAS号:
109-87-5
分子量:
76.09
Beilstein:
1697025
EC 号:
203-714-2
MDL编号:
MFCD00008495
UNSPSC代码:
12352100
PubChem化学物质编号:
24893265
NACRES:
NA.21

$67.40

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蒸汽密度

2.6 (vs air)

质量水平

200

蒸汽压

6.38 psi ( 20 °C)

产品线

ReagentPlus®

方案

99%

表单

liquid

自燃温度

459 °F

expl. lim.

17.6 %

dilution

(for general lab use)

折射率

n20/D 1.354 (lit.)

沸点

41-42 °C (lit.)

mp

−105 °C (lit.)

密度

0.86 g/mL at 25 °C (lit.)

SMILES字符串

COCOC

InChI

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

InChI key

NKDDWNXOKDWJAK-UHFFFAOYSA-N

相关类别

一般描述

二甲氧基甲烷（DMM，甲缩醛）是一种可生物降解的二甲基缩醛。它可以通过甲醛与甲醇的酸催化缩合反应合成。它是两亲性的，具有低粘度、低表面张力和低沸点。它是一种易燃、高挥发性溶剂，具有良好的溶解能力。[1]二甲胺具有较高的含氧量和改善柴油、汽油燃烧特性的能力，被认为是一种潜在的代用燃料和燃料添加剂。已用光声法测量了它的热扩散率。[2]用电子衍射技术分析 DMM 的分子结构，表明其具有 C 2 对称性，构象为 gauche-gauche 。[3]

应用

二甲氧基甲烷（甲醛缩二甲缩醛）可用于合成甲氧甲基 (MOM) 醚。[4][5] [6] 也可作为外部交联剂形成微孔聚合物。[7]

法律信息

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

象形图

Flame
GHS02

警示用语：

Danger

危险声明

H225

危险分类

Flam. Liq. 2

补充剂危害

EUH019

储存分类代码

3 - Flammable liquids

WGK

WGK 1

闪点(°F)

-0.4 °F - closed cup

闪点(°C)

-18 °C - closed cup

个人防护装备

Eyeshields, Faceshields, Gloves

历史批次信息供参考:

分析证书(COA)

Lot/Batch Number
SDBB2146
STBK5987
STBK1803
MKCN4287
STBJ7855

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Sigma-Aldrich

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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)
Scandium trifluoromethanesulfonate as a recyclable catalyst for efficient methoxymethylation of alcohols.
Karimi B and Ma'mani L.
Tetrahedron Letters, 44(32), 6051-6053 (2003)
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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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