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584-08-7

Basic Information
CAS No.: 584-08-7
Name: Potassium carbonate
Molecular Structure:
Molecular Structure of 584-08-7 (Potassium carbonate)
Formula: K2CO3
Molecular Weight: 138.21
Synonyms: Carbonic acid,compounds,dipotassium salt;dipotassium salt;Potassium Carbonate ACS Granular;EPA Pesticide Chemical Code 073504;Kalium carbonicum;Dipotassium carbonate;Potassium carbonate (JP14/USP);Potassium carbonate (2:1);Salt of tartar;Carbonate of potash;Pearl ash;Carbonic acid, dipotassium salt;Kaliumcarbonat [German];Potassium carbonate, anhydrous;Potassium carbonate (K2CO3);
EINECS: 209-529-3
Density: 2.43 g/mL at 25 °C
Melting Point: 891 °C(lit.)
Boiling Point: 333.6oC at 760 mmHg
Flash Point: 111oC
Solubility: 1120 g/L (20 °C) in water
Appearance: white powder or granules
Hazard Symbols: HarmfulXn
Risk Codes: 22-36/37/38-20/21/22
Safety: 26-36-37/39
Transport Information: UN 3262
PSA: 63.19000
LogP: -2.44700
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    Product Name: Potassium carbonate CAS: 584-08-7 MF: K2CO3 MW: 138.21 EINECS: 209-529-3 Mol File: 584-08-7.mol Chemical Properties white powder or granules Uses It is used as drying agent for organic solvents; a base. Appearance:white

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    Potassium Carbonate 1、Chemical Name: Potassium Carbonate 2、Molecular Formula: K2CO3 3、Molecular Weight: 138.21 4、CAS: 584-08-7 5、Character: It is anhydrous or contains 1.5 conbined water molecular. Anhydrous form occurs as white, granular powder

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History

1、Potassium carbonate was first identified in 1742 by Antonio Campanella and is the primary component of potash and the more refined pearlash or salts of tartar.
2、The first patent issued by the U.S. Patent Office was awarded to Samuel Hopkins in 1790 for an improved method of making potash and pearlash.
3、In late 18th century North America, before the development of baking powder, pearl ash was used as a leavening agent in "quick breads".

Consensus Reports

Reported in EPA TSCA Inventory.

Specification

Potassium carbonate , its CAS NO. is 584-08-7, the synonyms are Carbonic acid, dipotassium salt ; Dipotassium carbonate . Potassium carbonate (K2CO3) is a white salt, soluble in water (insoluble in ethano), which forms a strongly alkaline solution. It is deliquescent, often appearing a damp or wet solid. Potassium carbonate is used in the production of soap and glass.

Properties about Potassium carbonate are: (1)mp: 891 °C(lit.); (2)density: 2.43 g/mL at 25 °C; (3)storage temp.: Store at RT.; (4)solubility H2O: 1 M at 20 °C, clear, colorless; (5)form: powder; (6)Water Solubility: 1120 g/L (20 oC); (7)Sensitive: Hygroscopic; (8)Merck: 14,7619; (9)BRN: 4267587;

Preparation of Potassium carbonate: Today potassium carbonate is prepared commercially by the electrolysis of potassium chloride. The resulting potassium hydroxide is then carbonated using carbon dioxide to form potassium carbonate, which is often used to produce other potassium compounds.

2KOH + CO2 → K2CO3 + H2O

Uses of Potassium carbonate: Potassium carbonate is being used as the electrolyte in many cold fusion experiments. It is sometimes used as a buffering agent in the production of mead or wine. It is also used as a fire suppressant in extinguishing deep fat fryers and various other B class related fires. It is used in reactions to maintain anhydrous conditions without reacting with the reactants and product formed. It may also be used to pre-dry some ketones, alcohols, and amines prior to distillation. It is mixed with distilled water to make a safer electrolyte for oxyhydrogen production than potassium hydroxide, the more commonly used electrolyte. In cuisine, it is used as an ingredient in the production of grass jelly, a food consumed in Chinese and Southeast Asian cuisines.

When you are using this chemical, please be cautious about it as the following:
1. In case of contact with eyes, rinse immediately with plenty of water and seek medical advice;
2. Wear suitable protective clothing;
3. Wear suitable gloves and eye/face protection;

You can still convert the following datas into molecular structure:
(1)InChI=1S/CH2O3.2K/c2-1(3)4;;/h(H2,2,3,4);;/q;2*+1/p-2;
(2)InChIKey=BWHMMNNQKKPAPP-UHFFFAOYSA-L;
(3)SmilesC(=O)([O-])[O-].[K+].[K+];

The toxicity data is as follows:

Organism Test Type Route Reported Dose (Normalized Dose) Effect Source
bird - wild LD50 oral 100mg/kg (100mg/kg)   Archives of Environmental Contamination and Toxicology. Vol. 12, Pg. 355, 1983.
 
mouse LD50 oral 2570mg/kg (2570mg/kg)   Gigiena Truda i Professional'nye Zabolevaniya. Labor Hygiene and Occupational Diseases. Vol. 33(5), Pg. 30, 1989.
rat LC inhalation > 500mg/m3 (500mg/m3)   Gigiena Truda i Professional'nye Zabolevaniya. Labor Hygiene and Occupational Diseases. Vol. 33(5), Pg. 30, 1989.
rat LD50 oral 1870mg/kg (1870mg/kg)   American Industrial Hygiene Association Journal. Vol. 30, Pg. 470, 1969.