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590681

Sigma-Aldrich

Potassium carbonate

anhydrous, powder, 99.99% trace metals basis

Synonyme(s) :

Carbonate of potash, Dipotassium carbonate

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5 G
54,50 €
25 G
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About This Item

Formule linéaire :
K2CO3
Numéro CAS:
584-08-7
Poids moléculaire :
138.21
Beilstein:
4267587
Numéro CE :
209-529-3
Numéro MDL:
MFCD00011382
Code UNSPSC :
12352302
ID de substance PubChem :
24881291
Nomenclature NACRES :
NA.23

54,50 €

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Qualité

anhydrous

Essai

99.99% trace metals basis

Forme

powder

Impuretés

≤150.0 ppm Trace Metal Analysis

Pf

891 °C (lit.)

Solubilité

ethanol: insoluble(lit.)

Densité

2.43 g/mL at 25 °C

Chaîne SMILES 

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

InChI

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

Clé InChI

BWHMMNNQKKPAPP-UHFFFAOYSA-L

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Catégories apparentées

Application

Potassium carbonate may be used as a base in the synthesis of phytochemical-based oryzanol modified polystyrene from 4-chloromethylstyrene and γ-oryzanol in order to study their liquid crystal (LC) orientation property.[1]

À utiliser avec

Réf. du produit
Description
Tarif

Pictogrammes

Exclamation mark
GHS07

Mention d'avertissement

Warning

Mentions de danger

H315,H319,H335

Classification des risques

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

Organes cibles

Respiratory system

Code de la classe de stockage

13 - Non Combustible Solids

Classe de danger pour l'eau (WGK)

WGK 1

Point d'éclair (°F)

Not applicable

Point d'éclair (°C)

Not applicable

Équipement de protection individuelle

dust mask type N95 (US), Eyeshields, Gloves

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Certificats d'analyse (COA)

Lot/Batch Number
0000412896
0000412894
0000412896
0000197259
0000197258

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Vertical liquid crystal orientation of phytochemical-based oryzanol modified polystyrene.
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Sunflower seed oil residue, a by-product of sunflower seed oil refining, was utilized as a feedstock for preparation of activated carbon (SSHAC) via microwave induced K(2)CO(3) chemical activation. SSHAC was characterized by Fourier transform infrared spectroscopy, nitrogen adsorption-desorption and elemental
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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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