CAS 584-08-7 Potassium carbonate - Materials / Alfa Chemistry

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Potassium carbonate

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Catalog Number

ACM584087

CAS Number

584-08-7

Product Name

Potassium carbonate

Category

Electrolytes

Synonyms

Dipotassium cabonate

Description

Potassium carbonate (K2CO3) is a white salt, soluble in water (insoluble in ethanol) which forms a strongly alkaline solution. It can be made as the product of potassium hydroxide’s absorbent reaction with carbon dioxide. It is deliquescent, often appearing a damp or wet solid. Potassium carbonate is used in the production of soap and glass.

IUPAC Name

Dipotassium;carbonate

Molecular Weight

138.205

Molecular Formula

CK2O3

Canonical SMILES

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

InChI

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

InChI Key

BWHMMNNQKKPAPP-UHFFFAOYSA-L

Boiling Point

Decomposes

Melting Point

891 °C

Flash Point

111ºC

Purity

99%+

Density

2.43 g/mL at 25 °C (lit.)

Solubility

Very soluble in water, insoluble in ethanol

Appearance

Yellow powder

Storage

Store at +5 °C to +30 °C

Color/Form

Colorless cubic crystals; hygroscopic;Granules or granular powder;White, deliquescent, granular, translucent powder

Complexity

18.8

Covalently-Bonded Unit Count

EC Number

209-529-3;209-529-3

Exact Mass

137.91215683

Formal Charge

Heavy Atom Count

ICSC Number

1588

Log P

-2.44700

MeSH Entry Terms

K2CO3;potassium carbonate;potassium carbonate sesquihydrate

Monoisotopic Mass

137.91215683

Odor

Odorless

Other Experimental

Hygroscopic;Enthalpy of fusion: 27.60 kJ/mol at 899 °C;Decomposes on heating with CO2 loss.;Deliquesces in moist air;K2CO3 forms several hydrates, of which K2CO3.1.5H₂O is the stable phase in contact with the saturated solution from 0 °C to about 110 °C.;Granular crystals; solubility 111 g/100 g water at 20 °C /Potassium carbonate sesquihydrate/;When it contains the full amount of water (16.36%) it is not hygroscopic. The aqueous solution is strongly alkaline. /Potassium carbonate sesquihydrate/

Rotatable Bond Count

RTECS Number

TS7750000

Stability

Stable. Incompatible with moisture, acids, magnesium bromine trifluoride and magnesium bromine trichloride.

Storage Conditions

Store at RT.

Topological Polar Surface Area

63.2 Å²

UNII

BQN1B9B9HA

WGK Germany

MSDS

Download MSDS

COA

Download COA

Spec Sheet

Download Spec Sheet

Case Study

A Green Method to Deoxidize Graphene Oxide Using Potassium Carbonate as A Reducing Agent

He, Dongning, et al. RSC advances, 2015, 5(16), 11966-11972.

The preparation of graphene from graphene oxide (GO) via chemical exfoliation is an efficient approach, especially for the preparation of graphene on an industrial scale. Potassium carbonate (K2CO3) can be used as a safe, recyclable green chemical reducing agent to reduce graphene oxide. This is a green, simple and easy-to-scale GO deoxygenation process.
The reaction process of potassium carbonate deoxygenating GO
· On the one hand, the ionized oxygen produced by the electrochemical reaction between hydroxyl ions and oxygen in the presence of K2CO3 reacts with the attached carbonyl groups on the GO layer at 50 °C.
· On the other hand, ionized oxygen attacks the hydroxyl and epoxy groups, and they become carbonyl groups, which are then converted to carbon dioxide by K2CO3 at 90°C. These oxygen-containing groups are eventually converted from the graphene layer into CO2, leading to the formation of graphene sheets.

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