Potassium carbonate

Product Name: Potassium carbonate (CAS NO.584-08-7)

Molecular Formula: K₂CO₃
Molecular Weight: 138.19g/mol
Mol File: 584-08-7.mol
EINECS: 209-529-3
Appearance: white powder or granules
Melting Point: 891 °C(lit.)
Boiling point:  333.6 °C at 760 mmHg
Storage Temperature: Store at RT.
Flash Point: 169.8 °C 
Water Solubility: 1120 g/L (20 ºC)
Sensitive: Hygroscopic
Stability: Stable. Incompatible with moisture, acids, magnesium bromine trifluoride and magnesium bromine trichloride.
Enthalpy of Vaporization: 63.37 kJ/mol
Vapour Pressure: 2.58E-05 mmHg at 25°C
H-Bond Donor: 0
H-Bond Acceptor: 3
Structure Descriptors of Potassium carbonate (CAS NO.584-08-7):
  IUPAC Name: dipotassium carbonate
  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 
  InChIKey: BWHMMNNQKKPAPP-UHFFFAOYSA-L
Product Categories: INORGANIC & ORGANIC CHEMICALS; FOOD ADDITIVES; Inorganics; Chemical Synthesis; Inorganic BasesMetal and Ceramic Science; Potassium Salts; Salts; Synthetic Reagents; O-P, Puriss p.a.; Puriss p.a.; Reagent Plus; AlphabeticalChemical Synthesis; Biological Buffers; BioUltra Buffers; Inorganic Bases; Reagent Grade; Pharmacopoeia (USP); Pharmacopoeia A-ZPharmacopoeia (USP); Pharmacopoeial OrganicsEssential Chemicals; Routine Reagents; USP; ACS GradeEssential Chemicals; Adsorbents, Filter Aids and Drying Agents; Essential Chemicals; Other Drying Agents; Analytical Reagents for General Use; O-P, Puriss p.a. ACS; Puriss p.a. ACS

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".

 Potassium carbonate (CAS NO.584-08-7)  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.

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

Reported in EPA TSCA Inventory.

Safety Information of Potassium carbonate (CAS NO.584-08-7):
Hazard Codes: Xn
Risk Statements: 22-36/37/38-20/21/22  |
R22:Harmful if swallowed. 
R36/37/38:Irritating to eyes, respiratory system and skin. 
R20/21/22:Harmful by inhalation, in contact with skin and if swallowed.
Safety Statements: 26-36-37/39
S26: In case of contact with eyes, rinse immediately with plenty of water and seek medical advice. 
S36:Wear suitable protective clothing. 
S37/39:Wear suitable gloves and eye/face protection.
RIDADR: 3262
WGK Germany: 1
RTECS: TS7750000
F: 3
PackingGroup: III
HS Code: 28364000

 Potassium carbonate , its CAS NO. is 584-08-7, the synonyms are Carbonic acid, dipotassium salt ; Dipotassium carbonate .