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590681

Sigma-Aldrich

碳酸钾

anhydrous, powder, 99.99% trace metals basis

同義詞:

Carbonate of potash, Dipotassium carbonate

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About This Item

線性公式:
K2CO3
CAS號碼:
分子量::
138.21
Beilstein:
4267587
EC號碼:
MDL號碼:
分類程式碼代碼:
12352302
PubChem物質ID:
NACRES:
NA.23
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等級

anhydrous

品質等級

化驗

99.99% trace metals basis

形狀

powder

雜質

≤150.0 ppm Trace Metal Analysis

mp

891 °C (lit.)

溶解度

ethanol: insoluble(lit.)

密度

2.43 g/mL at 25 °C

SMILES 字串

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

InChI

1S/CH2O3.2K/c2-1(3)4;;/h(H2,2,3,4);;/q;2*+1/p-2

InChI 密鑰

BWHMMNNQKKPAPP-UHFFFAOYSA-L

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應用

碳酸钾可以作为碱,用于从4-氯甲基苯乙烯和γ-谷维素合成植物化学谷维素改性聚苯乙烯,以研究它们的液晶(LC)取向性质。[1]

象形圖

Exclamation mark

訊號詞

Warning

危險聲明

危險分類

Eye Irrit. 2 - Skin Irrit. 2 - STOT SE 3

標靶器官

Respiratory system

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

個人防護裝備

dust mask type N95 (US), Eyeshields, Gloves


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分析證明 (COA)

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The diversity of applications and nanostructured materials accessible using ultrasonic spray methods are highlighted in this article.

Ultrasonic spray pyrolysis produces scalable nanomaterials like metal oxides and quantum dots for diverse applications.

Questions

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  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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