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319937

Sigma-Aldrich

N,N-二甲基甲酰胺

ACS reagent, ≥99.8%

同義詞:

DMF, NSC 5356

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About This Item

線性公式:
HCON(CH3)2
CAS號碼:
68-12-2
分子量：:
73.09
Beilstein:
605365
EC號碼:
200-679-5
MDL號碼:
MFCD00003284
分類程式碼代碼:
12352111
PubChem物質ID:
329753939
NACRES:
NA.07
bp:
153 °C (lit.)
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等級

ACS reagent

品質等級

200

蒸汽密度

2.5 (vs air)

蒸汽壓力

2.7 mmHg ( 20 °C)

化驗

≥99.8%

形狀

liquid

自燃溫度

833 °F

expl. lim.

15.2 %

dilution

(for analytical testing)

雜質

≤0.0005 meq/g Titr. acid
≤0.003 meq/g Titr. base
≤0.15% water

蒸發殘留物

≤0.005%

顏色

clear
APHA: ≤15

折射率

n20/D 1.430 (lit.)

pH值

7 (20 °C, 200 g/L)

bp

153 °C (lit.)

mp

−61 °C (lit.)

密度

0.944 g/mL (lit.)

SMILES 字串

[H]C(=O)N(C)C

InChI

1S/C3H7NO/c1-4(2)3-5/h3H,1-2H3

InChI 密鑰

ZMXDDKWLCZADIW-UHFFFAOYSA-N

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相關類別

一般說明

N, N-二甲基甲酰胺（DMF）是一种有机化合物，在有机合成中常用作试剂和溶剂。它在各种反应中起着多重作用，如甲酰化剂、脱水剂、还原剂以及催化剂。

應用

DMF 可用作：     
  • 有机金属化合物的甲酰化剂。
  • 反应物，通过与氯化氧磷的反应制备 Vilsmeier 试剂。
  • 试剂，在叔丁醇钾环境下进行芳酰氯的胺化。     
  • 金属盐的还原剂，用于制备金属胶体。
  • 催化剂，用于无保护碳水化合物的区域选择性硅基化。

DMF 还可用于以下用途：     
  • DMF-光气催化体系用于从乙醇制备烷基卤化物。      
  • DMF-POCl3 用于将无环和环烯化酮转化为 β-氯-α, β-不饱和醛。
  • DMF-POCl3 用于从酰基苯胺合成喹啉-3-羧基。      
  • DMF-SOCl2 混合物用于将氧脱水成腈。      
  • DMF-Ag2O 将 α-溴丙酰胺转化为恶唑烷酮。
  • DMF 在许多要求高溶解力的化学反应中经常用作溶剂。

多种疏水性有机化合物的溶剂。

訊號詞

Danger

危險分類

Acute Tox. 4 Dermal - Acute Tox. 4 Inhalation - Eye Irrit. 2 - Flam. Liq. 3 - Repr. 1B

儲存類別代碼

3 - Flammable liquids

水污染物質分類（WGK）

WGK 2

閃點（°F）

135.5 °F - closed cup

閃點（°C）

57.5 °C - closed cup

從最近期的版本中選擇一個：

分析證明 (COA)

Lot/Batch Number
SHBS6453
SHBS5648
SHBR5636
SHBR4594
SHBS0470

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Jun Nishida et al.
Proceedings of the National Academy of Sciences of the United States of America, 111(52), 18442-18447 (2014-12-17)
The structural elasticity of metal-organic frameworks (MOFs) is a key property for their functionality. Here, we show that 2D IR spectroscopy with pulse-shaping techniques can probe the ultrafast structural fluctuations of MOFs. 2D IR data, obtained from a vibrational probe
L Piazza et al.
Nature communications, 6, 6407-6407 (2015-03-03)
Surface plasmon polaritons can confine electromagnetic fields in subwavelength spaces and are of interest for photonics, optical data storage devices and biosensing applications. In analogy to photons, they exhibit wave-particle duality, whose different aspects have recently been observed in separate
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Osteoporosis and overweight/obesity constitute major worldwide public health burdens that are associated with aging. A high proportion of women develop osteoporosis and increased intraabdominal adiposity after menopause. which leads to bone fractures and metabolic disorders. There is no efficient treatment
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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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