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重要文件

185884

Sigma-Aldrich

N,N-二甲基乙酰胺

ReagentPlus®, ≥99%

同義詞:

DMAc

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About This Item

線性公式:
CH3CON(CH3)2
CAS號碼:
分子量::
87.12
Beilstein:
1737614
EC號碼:
MDL號碼:
分類程式碼代碼:
12352111
eCl@ss:
39031204
PubChem物質ID:
NACRES:
NA.21
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蒸汽密度

3 (vs air)

品質等級

蒸汽壓力

2 mmHg ( 25 °C)
4 mmHg ( 38 °C)

產品線

ReagentPlus®

化驗

≥99%

形狀

liquid

自燃溫度

914 °F

expl. lim.

1.8 %, 100 °F
11.5 %, 160 °F

折射率

n20/D 1.437 (lit.)

pH值

4 (20 °C, 200 g/L)

bp

164.5-166 °C (lit.)

mp

−20 °C (lit.)

密度

0.937 g/mL at 25 °C (lit.)

SMILES 字串

CN(C)C(C)=O

InChI

1S/C4H9NO/c1-4(6)5(2)3/h1-3H3

InChI 密鑰

FXHOOIRPVKKKFG-UHFFFAOYSA-N

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一般說明

N,N-二甲基乙酰胺(DMAc)已被广泛用于组成纤维素的溶剂混合物。对溶解在不同浓度的DMAc/LiCl混合物中的纤维素的静态和动态光散射研究已有报道。[1]

應用

N,N-二甲基乙酰胺(DMAc)已被用作从块状石墨液中进行原始石墨烯相剥离的一种有机溶剂。[2]
可与氯化锂(LiCl)一起组成溶剂体系,以溶解商业人造丝级纤维素。[3] DMAc/LiCl溶剂混合物已用于制备几丁质、纤维素和聚酰亚胺纤维和薄膜。[4]
N,N-二甲基乙酰胺可被用于制备α-硫代N,N-二甲基乙酰胺。[5]DMAc可与氯化钯一起形成一种有效的催化体系,用于无需进行异构化而将数种内烯烃氧化为羰基化合物。[6]

法律資訊

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

象形圖

Health hazardExclamation mark

訊號詞

Danger

危險分類

Acute Tox. 4 Dermal - Acute Tox. 4 Inhalation - Eye Irrit. 2 - Repr. 1B

儲存類別代碼

6.1C - Combustible acute toxic Cat.3 / toxic compounds or compounds which causing chronic effects

水污染物質分類(WGK)

WGK 2

閃點(°F)

147.2 °F - closed cup

閃點(°C)

64 °C - closed cup

個人防護裝備

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


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分析證明 (COA)

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Isolation and reactions of. alpha.-lithio N, N-dimethylacetamide.
Woodbury RP and Rathke MW
The Journal of Organic Chemistry, 42(10), 1688-1690 (1977)
Wacker-Type Oxidation of Internal Olefins Using a PdCl2/N,N-Dimethylacetamide Catalyst System under Copper-Free Reaction Conditions.
Mitsudome T, et al.
Angewandte Chemie (International Edition in English), 49(7), 1238-1240 (2010)
Transparent conductive electrodes.
YK and Chen J.
Materials for Flexible and Printed Electronics , 1(840), 6-6 (2014)
B Tosh et al.
Carbohydrate research, 327(3), 345-352 (2000-08-17)
Commercial rayon grade cellulose was dissolved in the lithium chloride-N,N-dimethylacetamide (LiCl-DMAc) solvent system and esterified with acetic anhydride using p-toluenesulfonyl chloride (p-TsCl) and pyridine as catalysts. The reaction temperature was varied from 28 to 70 degrees C and the time
Solutions of cellulose in N, N-dimethylacetamide/lithium chloride studied by light scattering methods.
Roder T, et al.
Polymer, 42(16), 6765-6773 (2001)

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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