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236497

Sigma-Aldrich

乙酸钾

ACS reagent, ≥99.0%

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About This Item

線性公式:
CH3COOK
CAS號碼:
分子量::
98.14
Beilstein:
3595449
EC號碼:
MDL號碼:
分類程式碼代碼:
12352106
PubChem物質ID:
NACRES:
NA.21
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等級

ACS reagent

蒸汽壓力

<0.0000001 hPa ( 25 °C)

化驗

≥99.0%

形狀

powder or crystals

雜質

≤0.005% insolubles

pH值

6.5-9.0 (25 °C, 5%)

溶解度

water: soluble 98.2 g/L at 20 °C

密度

1.57 g/cm3 at 25 °C (lit.)

負離子痕跡

chloride (Cl-): ≤0.003%
phosphate (PO43-): ≤0.001%
sulfate (SO42-): ≤0.002%

正離子痕跡

Ca: ≤0.005%
Fe: ≤5 ppm
Mg: ≤0.002%
Na: ≤0.03%
heavy metals: ≤5 ppm (as Pb)

適合性

complies for IR spectroscopy

SMILES 字串

[K+].CC([O-])=O

InChI

1S/C2H4O2.K/c1-2(3)4;/h1H3,(H,3,4);/q;+1/p-1

InChI 密鑰

SCVFZCLFOSHCOH-UHFFFAOYSA-M

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一般說明

乙酸钾是一种吸湿性材料,在有机合成中用作碱。它还可作为缓冲溶剂和中和剂。

應用

乙酸钾用作:
  • 以DEG(二甘醇)为溶剂糖酵解硬质聚胺酯的催化剂。
  • 用于加成和聚合反应的亲核催化剂。
  • 环氧化物和 S-苯基硫代酸酯区域选择性反应的亲核催化剂。
  • 过渡金属催化反应的促进剂/碱。
  • 在邻苯二甲酰亚胺的光脱羧基亲核加成反应中作为甲基自由基来源,以及模板反应中作为钾离子来源。

乙酸钾还可以作为碱:
  • 用于异羟肟酸的洛森重排反应。
  • 用于E2 消除′反应。
  • 用于 α,α-二氯酮酯裂解和醇类的去质子化。

法律資訊

Redi-Dri is a trademark of Sigma-Aldrich Co. LLC

儲存類別代碼

13 - Non Combustible Solids

水污染物質分類(WGK)

WGK 1

閃點(°F)

Not applicable

閃點(°C)

Not applicable


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Potassium acetate-catalyzed acetylation of wood: extraordinarily rapid acetylation at 120 C.
Obataya E and Minato K.
Wood Science and Technology, 42(7), 567-577 (2008)
Eagleson M.
Concise Encyclopedia Chemistry, 886-886 (1994)
Jay D Gralla et al.
The EMBO journal, 25(7), 1515-1521 (2006-03-17)
Potassium glutamate accumulates upon hyper-osmotic shock and serves as a temporary osmoprotectant. This salt leads to transcriptional activation of sets of genes that allow the cell to achieve long-term adaptation to high osmolarity. The current experiments show that potassium glutamate
Yuval Erez et al.
The journal of physical chemistry. A, 116(9), 2039-2048 (2012-02-10)
Steady-state and time-resolved emission techniques were employed to study the effect of acetate, a mild base, on the luminescence of curcumin in methanol and ethanol. We found that the steady-state emission intensity as well as the average fluorescence decay time
Fátima Gebauer et al.
Methods in enzymology, 429, 23-33 (2007-10-05)
Classically, Drosophila cell-free translation systems have been used to study the response of the translational machinery to heat shock treatment. We and others have developed optimized Drosophila embryo and ovary extracts, and their use has expanded to the study of

Questions

1–3 of 3 Questions  
  1. what is the content in ppm of residual/ unreacted Acetic acid in Potassium Acetate .

    1 answer
    1. The amount of residual acetic acid in this material has not been determined.

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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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  3. 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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