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重要文件

402788

Sigma-Aldrich

乙醛

ACS reagent, ≥99.5%

同義詞:

乙醛

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About This Item

線性公式:
CH3CHO
CAS號碼:
分子量::
44.05
Beilstein:
505984
EC號碼:
MDL號碼:
分類程式碼代碼:
12352100
eCl@ss:
39021102
PubChem物質ID:
NACRES:
NA.21
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生物源

synthetic

品質等級

等級

ACS reagent

蒸汽密度

1.52 (vs air)

蒸汽壓力

14.63 psi ( 20 °C)

化驗

≥99.5%

形狀

liquid

自燃溫度

365 °F

expl. lim.

60 %

雜質

≤0.008 meq/g Titr. acid

蒸發殘留物

≤0.005%

折射率

n20/D 1.332 (lit.)

bp

21 °C (lit.)

mp

−125 °C (lit.)

溶解度

alcohols: soluble
water: miscible

密度

0.785 g/mL at 25 °C (lit.)

官能基

aldehyde

儲存溫度

2-8°C

SMILES 字串

CC=O

InChI

1S/C2H4O/c1-2-3/h2H,1H3

InChI 密鑰

IKHGUXGNUITLKF-UHFFFAOYSA-N

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相關類別

一般說明

乙醛是一种重要的工业溶剂,用作合成多种化合物的中间体。氧化生成乙酸,还原生成乙醇。[1]检测了Criegee中间体(CH2OO)与乙醛的相互作用。[2]研究了其作为神经活性剂的作用。[3]报道了不对称催化乙醛烷基化反应。[4]

應用

乙醛可用于通过一锅法交叉双曼尼希反应合成1,3-二胺[5],而通过脯氨酸催化的曼尼希反应可合成β-氨基醛。[6]

相關產品

產品號碼
描述
訂價

訊號詞

Danger

危險分類

Carc. 1B - Eye Irrit. 2 - Flam. Liq. 1 - Muta. 2 - STOT SE 3

標靶器官

Respiratory system

儲存類別代碼

3 - Flammable liquids

水污染物質分類(WGK)

WGK 3

閃點(°F)

-38.0 °F - closed cup

閃點(°C)

-38.89 °C - closed cup

個人防護裝備

Eyeshields, Faceshields, Gloves


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Direct measurement of Criegee intermediate (CH2OO) reactions with acetone, acetaldehyde, and hexafluoroacetone.
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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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