Potassium benzoate, (C6H5COOK), preservative, E212 Potassium amide, Highly toxic, Violent reaction with water, Not permitted in schools Potassium aluminium silicate, E555, Feldspars, (AlSi3O8): 35.15.0 Potassium adipate, C6H8K2O4, K2C6H80, dipotassium hexanedioate, E357, (acidity regulator, buffer) Potassium acetate, (CH3COOK), potassium ethanoate, white crystalline powder, completely dissociated into ions, E261 Solubility in water of different salts: 3.9 (Table) Reactions of potassium salts with water: 14.2.1 Poisons and First Aid: 3.10.0, (See the potassium salts in the table.) Plant nutrients from plant ash: 9.5.25, (See: 3. The potash could be boiled with fat to make produce soap. "Potash" was the name given to the potassium hydroxide, potassium carbonate and other potassium salts remaining when wood was burnt completely and the ashes dissolved in water boiling in iron pots, so "pot-ash". Potassium chloride, Sylvite (sylvine) bitter taste, KCl. Muscovite mica, white mica, K2Al4Si6Al2O20(OH,F)4 Langbeinite, K2Mg2(SO4)3, may be in "potash fertilizers" Illite, KAl4(Si, Al)8O20(OH)4, KAl4(Si, Al)8O18.2H2O, most common clay mineral Potassium forms a crust of yellow oxide that may explode when cut.įor school science experiments, use sodium or lithium instead of potassium.Ītomic number: 19, Relative atomic mass: 39.0983, RD 0.86, MP = 63.7 oC, BP = 774 oCĪmazonite, microcline, KAlSi3O8, blue-blue/green crystalsīiotite mica, K2(Mg,Fe)6-4(Fe,Al,Ti)0-2(Si6-5Al2-3O20)(OH,F)4 Potassium reacts violently with water to form hydrogen gas that may ignite or explode.ĭestroy potassium safely with 2-methylpropan-2-ol. Potassium metal is banned in many school systems. Potassium ions are lost in sweat along with sodium ions. Potassium has less concentration in extra cellular fluids than in intracellular fluids, where it is the primary cation. Potassium reacts with cold water and reacts with air to form peroxides. It reacts with dilute HCl or H2SO4 to form H2 and metal ion, reacts with concentrated oxidizing acids, HNO3 or H2SO4 to produce high oxidation number ions, and sulfur dioxide SO2 or nitrogen dioxide, NO2. Potassium is the " K" in the common fertilizer NPK, usually as (K2O). Potassium is about 2.5% of the earth's crust, is available in the laboratory as pieces of the metal in liquid paraffin and is used widely in chemistry. Potassium is a soft and shiny white alkali metal, highest metal in the reactivity series so does not occur in the free state. Potassium, K (Dutch potasch, potasschen potash) (Latin kalium, K), metal, potassium rod stored in mineral oil, AAS solution, toxic if ingested or contacts skin Tests for potassium: 12.11.3.1.1, tetraphenylborate testĬhemicals Not permitted in schools, Australia: Potassium and compounds All Rights Reserved.Tests for potassium: 12.11.3.25, sodium perchlorate We do not warrant (neither express nor implied) that the information in this chart is accurate or complete or that any material is suitable for any purpose. We have no knowledge of possible effects beyond this period. Ratings of chemical behavior listed in this chart apply at a 48-hr exposure period. ALWAYS test your equipment under the specific conditions of your application before permanent installation. Please Note: The information in this chart has been supplied by reputable sources and is to be used ONLY as a guide in selecting equipment for appropriate chemical compatibility. Polypropylene Chemical Compatibility Chart: Check the chemical compatibility of Polypropylene with various chemicals, solvents, alcohols and other products. Low temperature threshold: polypropylene becomes brittle below 0☌.The melting point of polypropylene is 160☌ / 320☏).At elevated temperature, polypropylene can be dissolved in nonpolar solvents such as xylene, tetralin and decalin.Polypropylene offers good resistance to non-oxidizing acids and bases, fats and most organic solvents.In general, polypropylene is chemically less resistant than polyethylene.What Chemicals are Compatible with Polypropylene?
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