Potassium carbonate:
Potassium carbonate, white crystalline powder.
The density of 2.428 g/cm3.
Melting point 891ºC, boiling point decomposition, the relative molecular weight of 138.21.
Soluble in water, aqueous solution is alkaline, insoluble in ethanol, acetone and ether.
Strong hygroscopicity, exposed to the air can absorb carbon dioxide and water, into potassium bicarbonate, should be sealed packaging.
Hydrate has one water, two water, three water.
Potassium carbonate aqueous solution is alkaline.
Insoluble in ethanol and ether.
Potassium carbonate is anhydrous or crystalline with 1.5 molecules.
The anhydrous substance is white granular powder, the crystal is small white translucent crystal or particle, odorless, with strong alkali taste, relative density 2.428(19ºC), melting point 891ºC, solubility in water is 114.5g/l00mL(25ºC), easy to absorb moisture in moist air.
Soluble in lmL water (25ºC) and about 0.7mL boiling water, the saturated aqueous solution after cooling, glassy monoclinic crystal hydrate precipitation, relative density 2.043, lost crystal water at 100ºC, the pH value of 10% aqueous solution is about 11.6, insoluble in ethanol and ether.
Application USES:
Potassium carbonate can be used in glass, printing and dyeing, soap, enamel, preparation of potassium salt, synthesis of ammonia carbonylation, also used in the color television industry, mainly used in food leavening agent.
Mainly used for analytical reagents. Such as high purity analysis, emission spectrum analysis. Can also be used for silicate and insoluble sulfate flux, organic liquid absorbent and electroplating, chemical fertilizer, photography industry.
Used in glass, printing and dyeing, soap, enamel, preparation of potassium salt, synthetic ammonia carbonylation, color television industry, food as swelling agent; As gas adsorbent, dry powder fire extinguishing agent, rubber anti-aging agent, etc.; Used for washing and processing of exposed photosensitive materials.
It is used in the manufacture of picture tube glass shell in electronic industry, decarbonization of chemical fertilizer production, potassium salt manufacturing, used as analytical reagent, flux, and also used in the preparation of various potassium salts; Fluxes for analytical reagents, reference reagents and fused silicates and insoluble sulphates.
Chemical experiments do desiccant. It is moderately absorbent and can form potassium carbonate with two crystalline waters (K2CO3·2H2O), but interacts with water more slowly. Suitable for dry alcohol, ester and other neutral organic matter as well as general basic organic matter such as amines, alkaloids. However, it can not be used as a desiccant for acids, phenols or other acidic substances.
Alkaline agent and dough amendment, and can inhibit the sourness of noodles, can be used for pasta food, according to the production needs of appropriate use. Used in the production of optical glass, can improve glass transparency, strength and refractive coefficient.
specificatio
Chinese name: potash |
Other name: potassium alkali |
Water solubility: easily soluble in water [105.5G (0ºC)] |
Dangerous goods Transport Number 3262 |
Other name: potassium alkali |
Appearance: White powder or pellet |