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Sigma-Aldrich

氢氧化钾

semiconductor grade, pellets, 99.99% trace metals basis (Purity excludes sodium content.)

别名:

苛性钾

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100 G
$278.00
500 G
$915.00

$278.00

国内现货，预计发货时间2025年4月15日详情

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100 G
$278.00
500 G
$915.00

About This Item

线性分子式:
KOH
CAS号:
1310-58-3
分子量:
56.11
EC 号:
215-181-3
MDL编号:
MFCD00003553
UNSPSC代码:
12352106
eCl@ss:
38100303
PubChem化学物质编号:
329753558
NACRES:
NA.21

$278.00

国内现货，预计发货时间2025年4月15日详情

获取大包装报价

等级

semiconductor grade

质量水平

200

蒸汽压

1 mmHg ( 719 °C)

方案

99.99% trace metals basis (Purity excludes sodium content.)

表单

pellets

组成

KOH, >85.0%

杂质

15% water

pH值（酸碱度）

~13.5 (25 °C, 5.6 g/L)

mp

361 °C (lit.)

痕量阳离子

Na: ≤500.0 ppm

SMILES字符串

[OH-].[K+]

InChI

1S/K.H2O/h;1H2/q+1;/p-1

InChI key

KWYUFKZDYYNOTN-UHFFFAOYSA-M

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相关类别

一般描述

氢氧化钾（KOH）又称苛性钾。它被用作许多含钾产品的重要前体。

应用

与碲粉结合，介导芳香族羰基化合物的吡那酮化反应。[1]
氢氧化钾可用于：
  • 作为碱，从胺和乙醇合成亚胺。
  • 作为仲醇与伯醇β-烷基化反应的碱，无需任何过渡金属催化剂。
  • 结合铝用于芳香醛的吡啶化和受阻酮的还原。
  • 作为沉淀剂，采用改性水热法制备 MnZn 铁氧体纳米粒子（Mn0.8Zn0.2Fe2O4铁氧体纳米粒子）。

象形图

CorrosionExclamation mark
GHS05,GHS07

警示用语：

Danger

危险声明

H290,H302,H314

危险分类

Acute Tox. 4 Oral - Eye Dam. 1 - Met. Corr. 1 - Skin Corr. 1A

储存分类代码

8A - Combustible corrosive hazardous materials

WGK

WGK 1

闪点(°F)

Not applicable

闪点(°C)

Not applicable

历史批次信息供参考:

分析证书(COA)

Lot/Batch Number
MKCX4655
MKCW3339
MKCS8606
MKCR9566
MKCR5077

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Nature communications, 11(1), 4246-4246 (2020-08-28)
Water electrolysis offers a promising energy conversion and storage technology for mitigating the global energy and environmental crisis, but there still lack highly efficient and pH-universal electrocatalysts to boost the sluggish kinetics for both cathodic hydrogen evolution reaction (HER) and
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The effect of the alkali-metal cation (Li+, Na+, K+, and Cs+) on the non-Nernstian pH shift of the Pt(554) and Pt(533) step-associated voltammetric peak is elucidated over a wide pH window (1-13), through computation and experiment. In conjunction with our
Haochen Zhang et al.
Nature communications, 10(1), 3340-3340 (2019-07-28)
Electroreduction of carbon dioxide to hydrocarbons and oxygenates on copper involves reduction to a carbon monoxide adsorbate followed by further transformation to hydrocarbons and oxygenates. Simultaneous improvement of these processes over a single reactive site is challenging due to the
Maria D Cabezas et al.
Methods in cell biology, 119, 261-276 (2014-01-21)
The extracellular matrix (ECM) is a complex, spatially inhomogeneous environment that is host to myriad cell-receptor interactions that promote changes in cell behavior. These biological systems can be probed and simulated with engineered surfaces, but doing so demands careful control
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Hydrogen production from renewable energy and ubiquitous water has a potential to achieve sustainability, although current water electrolyzers cannot compete economically with the fossil fuel-based technology. Here, we evaluate water electrolysis at pH 7 that is milder than acidic and alkaline
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Questions

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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