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    Kaliumhydroxid Produkt Beschreibung

    Potassium hydroxide  Struktur
    1310-58-3
    CAS-Nr.
    1310-58-3
    Bezeichnung:
    Kaliumhydroxid
    Englisch Name:
    Potassium hydroxide
    Synonyma:
    LYE;KOH;KHO;POTASH;Potassa;Potassio;POTASH LYE;KOH/CH63857;Causicpotash;potassium lye
    CBNumber:
    CB3107908
    Summenformel:
    KOH
    Molgewicht:
    56.11
    MOL-Datei:
    1310-58-3.mol

    Kaliumhydroxid Eigenschaften

    Schmelzpunkt:
    361 °C (lit.)
    Siedepunkt:
    1320°C
    Dichte
    1.450 g/mL at 20 °C
    Dampfdruck
    1 mm Hg ( 719 °C)
    Brechungsindex
    n20/D 1.421
    Flammpunkt:
    52 °F
    storage temp. 
    Store at +5°C to +30°C.
    L?slichkeit
    H2O: 1 M at 20 °C, clear, colorless
    Aggregatzustand
    powder
    Farbe
    white
    Wichte
    1.09
    Geruch (Odor)
    Odorless
    PH
    14 (56g/l, H2O, 20℃)
    Explosionsgrenze
    3.5-15.0%(V) (ethanol)
    Wasserl?slichkeit
    soluble
    Sensitive 
    Air Sensitive & Hygroscopic
    Merck 
    14,7640
    Expositionsgrenzwerte
    Ceiling in air 2 mg/m3 (ACGIH).
    Stabilit?t:
    Stable, but very hygroscopic. Dissolves exothermically in water. Incompatible with most metals, strong acids, acid chlorides, organic materials, zinc, aluminium, nitroalkanes, nitrobenzene, chlorine dioxide. Reacts vigorously with a wide variety of other materials. Readily absorbs water and carbon dioxide from the air.
    InChIKey
    KWYUFKZDYYNOTN-UHFFFAOYSA-M
    CAS Datenbank
    1310-58-3(CAS DataBase Reference)
    NIST chemische Informationen
    Potassium hydroxide(1310-58-3)
    EPA chemische Informationen
    Potassium hydroxide (1310-58-3)
    Sicherheit
    • Risiko- und Sicherheitserkl?rung
    • Gefahreninformationscode (GHS)
    Kennzeichnung gef?hrlicher C,F,T,Xi
    R-S?tze: 34-35-22-11-39/23/24/25-23/24/25-36/38-36/37-67-52/53
    S-S?tze: 7-16-36/37-45-36/37/39-26-61
    RIDADR  UN 2924 3/PG 2
    WGK Germany  1
    RTECS-Nr. TT2100000
    3
    Selbstentzündungstemperatur 425 °C (ethanol)
    TSCA  Yes
    HazardClass  8
    PackingGroup  II
    HS Code  28259090
    Giftige Stoffe Daten 1310-58-3(Hazardous Substances Data)
    Toxizit?t LD50 orally in rats: 1.23 g/kg (Smyth)
    Bildanzeige (GHS)
    Alarmwort Achtung
    Gefahrenhinweise
    Code Gefahrenhinweise Gefahrenklasse Abteilung Alarmwort Symbol P-Code
    H225 Flüssigkeit und Dampf leicht entzündbar. Entzündbare Flüssigkeiten Kategorie 2 Achtung P210,P233, P240, P241, P242, P243,P280, P303+ P361+P353, P370+P378,P403+P235, P501
    H290 Kann gegenüber Metallen korrosiv sein. Korrosiv gegenüber Metallen Kategorie 1 Warnung P234, P390, P404
    H302 Gesundheitssch?dlich bei Verschlucken. Akute Toxizit?t oral Kategorie 4 Warnung P264, P270, P301+P312, P330, P501
    H303 May be harmfulif swallowed Acute toxicity,oral Category 5 P312
    H311 Giftig bei Hautkontakt. Akute Toxizit?t dermal Kategorie 3 Achtung P280, P302+P352, P312, P322, P361,P363, P405, P501
    H314 Verursacht schwere Ver?tzungen der Haut und schwere Augensch?den. ?tzwirkung auf die Haut Kategorie 1B Achtung P260,P264, P280, P301+P330+ P331,P303+P361+P353, P363, P304+P340,P310, P321, P305+ P351+P338, P405,P501
    H315 Verursacht Hautreizungen. Hautreizung Kategorie 2 Warnung P264, P280, P302+P352, P321,P332+P313, P362
    H318 Verursacht schwere Augensch?den. Schwere Augensch?digung Kategorie 1 Achtung P280, P305+P351+P338, P310
    H319 Verursacht schwere Augenreizung. Schwere Augenreizung Kategorie 2 Warnung P264, P280, P305+P351+P338,P337+P313P
    H331 Giftig bei Einatmen. Akute Toxizit?t inhalativ Kategorie 3 Achtung P261, P271, P304+P340, P311, P321,P403+P233, P405, P501
    H370 Sch?digt die Organe. Spezifische Zielorgan-Toxizit?t (einmalige Exposition) Kategorie 1 Achtung P260, P264, P270, P307+P311, P321,P405, P501
    Sicherheit
    P260 Dampf/Aerosol/Nebel nicht einatmen.
    P264 Nach Gebrauch gründlich waschen.
    P264 Nach Gebrauch gründlich waschen.
    P280 Schutzhandschuhe/Schutzkleidung/Augenschutz tragen.
    P321 Besondere Behandlung
    P301+P330+P331 BEI VERSCHLUCKEN: Mund ausspülen. KEIN Erbrechen herbeiführen.
    P303+P361+P353 BEI BERüHRUNG MIT DER HAUT (oder dem Haar): Alle kontaminierten Kleidungsstücke sofort ausziehen. Haut mit Wasser abwaschen oder duschen.
    P305+P351+P338 BEI KONTAKT MIT DEN AUGEN: Einige Minuten lang behutsam mit Wasser spülen. Eventuell vorhandene Kontaktlinsen nach M?glichkeit entfernen. Weiter spülen.

    Kaliumhydroxid Chemische Eigenschaften,Einsatz,Produktion Methoden

    ERSCHEINUNGSBILD

    WEISSER, ZERFLIESSENDER FESTSTOFF, GERUCHLOS.

    ARBEITSPLATZGRENZWERTE

    TLV: (als STEL, ceiling) 2 mg/m? (ACGIH 2005).
    MAK nicht festgelegt (DFG 2005).

    AUFNAHMEWEGE

    Aufnahme in den K?rper durch Inhalation des Aerosols und durch Verschlucken.

    INHALATIONSGEFAHREN

    Verdampfung bei 20°C vernachl?ssigbar; eine gesundheitssch?dliche Partikelkonzentration in der Luft kann jedoch schnell erreicht werden.

    WIRKUNGEN BEI KURZZEITEXPOSITION

    WIRKUNGEN BEI KURZZEITEXPOSITION:
    ?tzend. Die Substanz ver?tzt stark die Augen, die Haut und die Atemwege. ?tzend beim Verschlucken. Inhalation des Aerosols der Substanz kann zu Lungen?dem führen (s.Anm.).

    WIRKUNGEN NACH WIEDERHOLTER ODER LANGZEITEXPOSITION

    Wiederholter oder andauernder Hautkontakt kann Dermatitis hervorrufen.

    LECKAGE

    Verschüttetes Material in geeigneten Beh?ltern sammeln; falls erforderlich durch Anfeuchten Staubentwicklung verhindern. Reste mit viel Wasser wegspülen. Pers?nliche Schutzausrüstung: Vollschutzanzug mit umgebungsluftunabh?ngigem Atemschutzger?t.

    R-S?tze Betriebsanweisung:

    R34:Verursacht Ver?tzungen.
    R35:Verursacht schwere Ver?tzungen.
    R22:Gesundheitssch?dlich beim Verschlucken.
    R11:Leichtentzündlich.
    R39/23/24/25:Giftig: ernste Gefahr irreversiblen Schadens durch Einatmen, Berührung mit der Haut und durch Verschlucken.
    R23/24/25:Giftig beim Einatmen, Verschlucken und Berührung mit der Haut.
    R36/38:Reizt die Augen und die Haut.
    R36/37:Reizt die Augen und die Atmungsorgane.
    R67:D?mpfe k?nnen Schl?frigkeit und Benommenheit verursachen.

    S-S?tze Betriebsanweisung:

    S7:Beh?lter dicht geschlossen halten.
    S16:Von Zündquellen fernhalten - Nicht rauchen.
    S36/37:Bei der Arbeit geeignete Schutzhandschuhe und Schutzkleidung tragen.
    S45:Bei Unfall oder Unwohlsein sofort Arzt zuziehen (wenn m?glich, dieses Etikett vorzeigen).
    S36/37/39:Bei der Arbeit geeignete Schutzkleidung,Schutzhandschuhe und Schutzbrille/Gesichtsschutz tragen.
    S26:Bei Berührung mit den Augen sofort gründlich mit Wasser abspülen und Arzt konsultieren.

    Beschreibung

    Caustic potash, KOH, also known as potassium hydroxide and lye, is a hydroxide salt. It is found as a white solid in the form of pieces, lumps, sticks, pellets, or flakes. Potassium hydroxide may also be found as a liquid. It is water soluble and may absorb water and carbon dioxide from the air. The specific gravity is 2.04, which is heavier than water; however, it is miscible with water, so it will mix rather than form layers.

    Chemische Eigenschaften

    Potassium hydroxide, caustic potash, potassium hydrate, KOH, white solid, formed (1) by reaction of potassium carbonate and calcium hydroxide in H2O, and then separation of the solution and evaporation, (2) by electrolysis of potassium chloride under the proper conditions, and evaporation.

    Chemische Eigenschaften

    Potassium hydroxide occurs as a white or nearly white fused mass. It is available in small pellets, flakes, sticks and other shapes or forms. It is hard and brittle and shows a crystalline fracture. Potassium hydroxide is hygroscopic and deliquescent; on exposure to air, it rapidly absorbs carbon dioxide and water with the formation of potassium carbonate. Soluble in water, alcohol, glycerol; slightly soluble in ether.

    Physikalische Eigenschaften

    White rhombohedral deliquescent crystal; density 2.044 g/cm3; melts at 360°C; vaporizes around 1,320°C; highly soluble in water, 107 g/100mL at 15°C and 178 g/100mL at 100°C; aqueous solution highly alkaline, pH of 0.1M solution is 13.5; soluble in alcohol and glycerol; insoluble in ether and liquid ammonia.

    Verwenden

    Potassium hydroxide is used in making liquidsoap and potassium salts, in electroplatingand lithography, in printing inks, as a mordantfor wood, and finds wide applicationsin organic syntheses and chemical analyses.

    Verwenden

    potassium hydroxide is used as an emulsifier in lotions and as an alkali in liquid soaps, protective creams, and shaving preparations. Depending on the concentration used, it can be highly irritating to the skin and/or cause a burning sensation.

    Verwenden

    Potassium Hydroxide is a water-soluble food additive and bleaching agent. upon exposure to air it readily absorbs carbon dioxide and moisture and deliquesces. it is used to destroy the bitter chemical constituents in olives that will be used as black olives.

    Indications

    Potassium hydroxide (KOH) is a strong alkali that digests proteins and epidermal debris. In one study, 10% solution was applied b.i.d. to each lesion for 30 days with excellent clearance. The side effects included stinging of the lesion and one case of secondary infection. Also reported were the occurrence of a hypertrophic scar as well as some persistent or transitory hyper- and hypopigmentation. The same authors who used the 5% KOH solution completed further studies and they found it to be as effective-yet with decreased side effects.

    Vorbereitung Methode

    Potassium hydroxide is made by the electrolysis of potassium chloride. Commercial grades may contain chlorides as well as other impurities.

    Allgemeine Beschreibung

    A white solid. Corrosive to metals and tissue. Used in soap manufacture, bleach, as an electrolyte in alkaline batteries, and as a food additive.

    Air & Water Reaktionen

    Hydrolysis generates enough heat to ignite adjacent combustible material [Haz. Chem. Data 1966]. Dissolves in water (with liberation of heat, may steam and spatter. Solution is basic (alkaline). Deliquescent

    Reaktivit?t anzeigen

    POTASSIUM HYDROXIDE absorbs moisture readily forming caustic solution that attacks aluminum and zinc. A piece of potassium hydroxide causes liquid chlorine dioxide to explode [Mellor 2:289. 1946-47]. 1,2-dichloroethylene and potassium hydroxide forms chloroacetylene, which is explosive and spontaneously flammable in air. Potassium hydroxide is highly toxic [Rutledge 1968. p. 134]. A reaction between n-nitrosomethylurea and potassium hydroxide in n-butyl ether resulted in an explosion due to the formation of diazomethane [Schwab 1972]. Potassium persulfate and a little potassium hydroxide and water ignited a polythene (polyethylene) liner of a container by release of heat and oxygen [MCA Case History 1155. 1955]. Using potassium hydroxide to dry impure tetrahydrofuran, which contains peroxides, may be hazardous. Explosions have occurred in the past. Sodium hydroxide behaves in a similar way as potassium hydroxide [NSC Newsletter Chem. Soc. 1967]. A strong base. Forms caustic solution in water. [Merck 11th ed. 1989].

    Hazard

    Toxic by ingestion and inhalation, strong caustic, handle with gloves or tongs, corrosive to tissue. Eye, skin and upper respiratory tract irritant.

    Health Hazard

    Causes severe burns of eyes, skin, and mucous membranes.
    Potassium hydroxide is a strongly alkaline, hydrophilic substance and therefore solid potassium hydroxide is highly corrosive. It reacts with fat and can cause irreversible damage to any site of contact with the body (for example skin or eyes). Solutions of potassium hydroxide in water at concentrations above 0.5% (w/w) are irritating at points of contact and, at higher concentrations, the solutions can be corrosive. Potassium hydroxide does not cause skin allergies. Because of the corrosive properties of potassium hydroxide, its ingestion can be fatal. Under normal conditions of handling and use, potassium hydroxide in solution will dissociate into its constituent ions and, if ingested, will not be systemically available in the body as such.

    Brandgefahr

    Non-combustible, substance itself does not burn but may decompose upon heating to produce corrosive and/or toxic fumes. Some are oxidizers and may ignite combustibles (wood, paper, oil, clothing, etc.). Contact with metals may evolve flammable hydrogen gas. Containers may explode when heated.

    Flammability and Explosibility

    Sodium hydroxide and potassium hydroxide are not flammable as solids or aqueous solutions.

    Pharmazeutische Anwendungen

    Potassium hydroxide is widely used in pharmaceutical formulations to adjust the pH of solutions. It can also be used to react with weak acids to form salts.
    Therapeutically, potassium hydroxide is used in various dermatological applications.

    Sicherheitsprofil

    Poison by ingestion. An eye irritant and severe human skin irritant. Very corrosive to the eyes, skin, and mucous membranes. Mutation data reported. Ingestion may cause violent pain in throat and epigastrium, hematemesis, collapse. Stricture of esophagus may result if substance is not immedately fatal. Above 84' it reacts with reducing sugars to form poisonous carbon monoxide gas. Violent, exothermic reaction with water. Potentially explosive reaction with bromoform + crown ethers, chlorine dioxide, nitrobenzene, nitromethane, nitrogen trichloride, peroxidized tetrahydrofuran, 2,4,6- trinitrotoluene. Reaction with ammonium hexachloroplatinate(2-) + heat forms a heat- sensitive explosive product. Violent reaction or ignition under the appropriate condtions with acids, alcohols, p-bis(l,3- dbromoethyl)benzene, cyclopentadene, germanium, hyponitrous acid, maleic anhydride, nitroalkanes, 2-nitrophenol, potassium peroxodisulfate, sugars, 2,2,3,3- tetrafluoropropanol, thorium dicarbide. When heated to decomposition it emits toxic fumes of K2O. See also SODIUM HYDROXIDE.

    Sicherheit(Safety)

    Potassium hydroxide is widely used in the pharmaceutical and food industries and is generally regarded as a nontoxic material at low concentrations. At high concentrations it is a corrosive irritant to the skin, eyes, and mucous membranes.
    (rat, oral): 0.273 g/kg

    m?gliche Exposition

    KOH is generally used as an alkali and in the manufacture of other potassium compounds.

    Lager

    splash goggles and impermeable gloves should be worn at all times when handling these substances to prevent eye and skin contact. Operations with metal hydroxide solutions that have the potential to create aerosols should be conducted in a fume hood to prevent exposure by inhalation. NaOH and KOH generate considerable heat when dissolved in water; when mixing with water, always add caustics slowly to the water and stir continuously. Never add water in limited quantities to solid hydroxides. Potassium hydroxide should be stored in an airtight, nonmetallic container in a cool, dry place, separated from acids and incompatible substances.

    Versand/Shipping

    UN1814 (solution) & UN1813 (solid); Potassium hydroxide, solid or solution, Hazard class: 8; Labels: 8-Corrosive material.

    l?uterung methode

    Its carbonate content can be reduced by rinsing KOH sticks rapidly with water prior to dissolving them in boiled out distilled water. Alternatively, a slight excess of saturated BaCl2 or Ba(OH)2 can be added to the solution which, after shaking well, is set aside so that the BaCO3 is allowed to separate out. Davies and Nancollas [Nature 165 237 1950] rendered KOH solutions carbonate free by ion exchange using a column of Amberlite IR-100 in the OH-form.

    Inkompatibilit?ten

    Potassium hydroxide is a strong base and is incompatible with any compound that readily undergoes hydrolysis or oxidation. Violent reaction with acids, alcohols, water, metals (when wet), halogenated hydrocarbons; maleic anhydride. Heat is generated if KOH comes in contact with water and carbon dioxide from the air. It should not be stored in glass or aluminum containers, Corrosive to zinc, aluminum, tin and lead in the presence of moisture releasing combustible/explosive hydrogen gas. Can absorb water from air and give off sufficient heat to ignite surrounding combustible materials.

    Waste disposal

    Dilute with large volume of water, neutralize and flush to sewer

    Regulatory Status

    GRAS listed. Accepted for use in Europe in certain food applications. Included in the FDA Inactive Ingredients Database (injections, infusions, and oral capsules and solutions). Included in nonparenteral and parenteral medicines licensed in the UK. Included in the Canadian List of Acceptable Non-medicinal Ingredients.

    Kaliumhydroxid Upstream-Materialien And Downstream Produkte

    Upstream-Materialien

    Downstream Produkte


    Kaliumhydroxid Anbieter Lieferant Produzent Hersteller Vertrieb H?ndler.

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    1310-58-3(Kaliumhydroxid)Verwandte Suche:


    • POTASH
    • POTASH CAUSTIC
    • POTASH LYE
    • POTASSIUM HYDRATE
    • POTASSIUM HYDROXIDE STANDARD
    • POTASSIUM HYDROXIDE
    • POTASSIUM HYDROXIDE ETHANOLIC
    • hydroxydedepotassium(solide)
    • hydroxydedepotassium(solutions)
    • Kaliumhydroxid
    • Kaliumhydroxyde
    • Potassa
    • Potasse caustique
    • potassecaustique
    • potassecaustique(french)
    • Potassio
    • potassio(idrossidodi)
    • Potassium hydroxide (K(OH))
    • potassium(hydroxydede)
    • potassium(hydroxydede)(french)
    • Vegetable alkali
    • caustic potash, in aqueous solution
    • caustic potash, solid
    • potassium hydroxide (na <0.05%)
    • Potassium hydroxide pellets
    • potassium hydroxide, in aqueous solution
    • potassium lye
    • Potassiumhydroxideflake
    • SPECS: MIN 90% CAUSTIC POTASH(POTTASSIUM HYDROXIDE).
    • POTASSIUM HYDROXIDE, PELLETS, 85+%, A.C. S. REAGENT
    • POTASSIUM HYDROXIDE, VOLUMETRIC STANDARD , 1.0N SOLUTION IN WATER
    • POTASSIUM HYDROXIDE 45 WT. % SOLUTION &
    • POTASSIUM HYDROXIDE STD SOL., 1.0 MOL/L (1.0N) IN MEOH, 1 L
    • POTASSIUM HYDROXIDE SOLUTION 28.5%
    • POTASSIUM HYDROXIDE, FOR LUMINESCENCE, P ELLETS
    • POTASSIUM HYDROXIDE ACS REAGENT PELLETS
    • POTASSIUM HYDROXIDE, PH EUR
    • Potassium hydroxide solution 47 %
    • POTASSIUM HYDROXIDE STD. SOL., 0.1 MOL/L (0.1N) IN MEOH, 1 L
    • POTASSIUM HYDROXIDE (So < 0.05%), ACS, P ELLETS
    • POTASSIUM HYDROXIDE, VOLUMETRIC STANDARD , 1.0N SOLUTION IN METHYL ALCOHOL
    • 0,1 MOL POTASSIUM HYDROXIDE SOLUTIONFIXA NAL
    • POTASSIUM HYDROXIDE SEMICONDUCTOR GRADE
    • POTASSIUM HYDROXIDE, PELLETS, 99.99% METALS BASIS, SEMICONDUCTOR GRADE
    • POTASSIUM HYDROXIDE PELLETS 85+% &
    • POTASSIUM HYDROXIDE, VOLUMETRIC STANDARD , 0.5N SOLUTION IN METHYL ALCOHOL
    • POTASSIUM HYDROXIDE SOLUTION 50% 50 L
    • POTASSIUM HYDROXIDE POWDER, TECHNICAL
    • POTASSIUM HYDROXIDE, FLAKES
    • PotassiumHydroxidePelletsExtraPure
    • PotassiumHydroxideFlakesBp
    • PotassiumHydroxideFlakesExtraPure
    • PotassiumHydroxidePelletsAcs
    • PotassiumHydroxidePelletsFcc
    • PotassiumHydroxideFlakesNf
    • PotassiumHydroxidePelletsA.R.
    • PotassiumHydroxide0.1M
    • PotassiumHydroxidePelletsNf
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