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Potassium Carbonate ( K2CO3 ) Anhydrous - Drying Agent - - 500g
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Description
Potassium Carbonate Anhydrous – Drying Agent
Other Names: Potash, Pearl Ash
Chemical Formula: K₂CO₃
Molar Mass: 138.21 g/mol
CAS Number: 584-08-7
Appearance: White, granular or crystalline powder
Odor: Odorless
Potassium carbonate is a strongly alkaline inorganic salt with excellent hygroscopic properties, commonly used as a drying agent, pH regulator, and base in various chemical processes.
Chemical and Physical Properties
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Density: ~2.43 g/cm³
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Melting Point: ~891 °C
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Boiling Point: Decomposes before boiling
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Solubility in Water: Very soluble (1120 g/L at 20 °C)
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Solubility in Other Solvents: Insoluble in alcohol; soluble in glycerol
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pH (1% aqueous solution): ~11.5
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Hygroscopicity: Highly hygroscopic – absorbs moisture readily from air
Applications
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Drying Agent: Used for removing moisture from organic solvents and gases
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Chemical Synthesis: Functions as a mild base or buffering agent in laboratory reactions
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Glass Industry: Flux for modifying glass melting behavior and improving clarity
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Cleaning Compounds: Component of industrial cleaners and degreasers
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Ceramics and Metallurgy: Used in ceramic glazing and metal surface treatments
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pH Control: Adjusts alkalinity in industrial solutions
Safety
Signal Word: ⚠️ Warning
H302 (15.4%): Harmful if swallowed [Warning Acute toxicity, oral]
H315 (45%): Causes skin irritation [Warning Skin corrosion/irritation]
H319 (97.7%): Causes serious eye irritation [Warning Serious eye damage/eye irritation]
H335 (42.3%): May cause respiratory irritation [Warning Specific target organ toxicity, single exposure; Respiratory tract irritation]
P261, P264, P264+P265, P270, P271, P280, P301+P317, P302+P352, P304+P340, P305+P351+P338, P319, P321, P330, P332+P317, P337+P317, P362+P364, P403+P233, P405, and P501
Handling and Storage
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Handling: Avoid contact with eyes and prolonged skin exposure. Prevent dust formation. Use in a well-ventilated area
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Storage: Store in tightly sealed containers in a cool, dry place. Protect from moisture and incompatible substances (e.g., acids)
Environmental Considerations
Potassium carbonate is not classified as environmentally hazardous in small amounts but may alter the pH of water if released in significant quantities. Avoid discharge into natural waterways. Dispose of in accordance with local environmental regulations.