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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:
KOH;LYE;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. 
0-6°C
Löslichkeit
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)
Wasserlöslichkeit
soluble
Sensitive 
Air Sensitive & Hygroscopic
Merck 
14,7640
Expositionsgrenzwerte
Ceiling in air 2 mg/m3 (ACGIH).
Stabilität:
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 (K(OH))(1310-58-3)
Sicherheit
  • Risiko- und Sicherheitserklärung
  • Gefahreninformationscode (GHS)
Kennzeichnung gefährlicher C,F,T,Xi
R-Sätze: 34-35-22-11-39/23/24/25-23/24/25-36/38-36/37-67-52/53
S-Sätze: 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)
Toxizität 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 Gesundheitsschädlich bei Verschlucken. Akute Toxizität 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 Toxizität dermal Kategorie 3 Achtung P280, P302+P352, P312, P322, P361,P363, P405, P501
H314 Verursacht schwere Verätzungen der Haut und schwere Augenschäden. Ätzwirkung 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 Augenschäden. Schwere Augenschädigung 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 Toxizität inhalativ Kategorie 3 Achtung P261, P271, P304+P340, P311, P321,P403+P233, P405, P501
H370 Schädigt die Organe. Spezifische Zielorgan-Toxizität (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 Möglichkeit 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 Körper durch Inhalation des Aerosols und durch Verschlucken.

INHALATIONSGEFAHREN

Verdampfung bei 20°C vernachlässigbar; eine gesundheitsschädliche Partikelkonzentration in der Luft kann jedoch schnell erreicht werden.

WIRKUNGEN BEI KURZZEITEXPOSITION

WIRKUNGEN BEI KURZZEITEXPOSITION:
ätzend. Die Substanz verätzt stark die Augen, die Haut und die Atemwege. ätzend beim Verschlucken. Inhalation des Aerosols der Substanz kann zu Lungenödem führen (s.Anm.).

WIRKUNGEN NACH WIEDERHOLTER ODER LANGZEITEXPOSITION

Wiederholter oder andauernder Hautkontakt kann Dermatitis hervorrufen.

LECKAGE

Verschüttetes Material in geeigneten Behältern sammeln; falls erforderlich durch Anfeuchten Staubentwicklung verhindern. Reste mit viel Wasser wegspülen. Persönliche Schutzausrüstung: Vollschutzanzug mit umgebungsluftunabhängigem Atemschutzgerät.

R-Sätze Betriebsanweisung:

R34:Verursacht Verätzungen.
R35:Verursacht schwere Verätzungen.
R22:Gesundheitsschädlich 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:Dämpfe können Schläfrigkeit und Benommenheit verursachen.

S-Sätze Betriebsanweisung:

S7:Behälter 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 möglich, 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.

Chemische Eigenschaften

White, deliquescent pieces, lumps, sticks, pellets, or flakes having a crystalline fracture. Keep well stoppered, absorbs water and carbon dioxide from the air. Soluble in water, alcohol, glycerol; slightly soluble in ether.

Chemische Eigenschaften

Potassium hydroxide is a white deliquescent solid.

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.

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.

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

Pharmaceutic aid (alkalizing agent).

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

Reaktivität 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.

Health Hazard

Potassium hydroxide is extremely corrosiveto tissues. Its corrosive action is greater thanthat of sodium hydroxide. It gelatinizes tissuesto form soluble compounds that maycause deep and painful lesions (ACGIH1986). Contact with the eyes can damagevision. Ingestion can cause severe pain in thethroat, vomiting, and collapse.
LD50 value, oral (rats): 365 mg/kg
Exposure to its dusts can cause irritationof the nose and throat.

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

mögliche 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. Containers of hydroxides should be stored in a cool, dry location, separated from acids and incompatible substances.

Lager

Potassium hydroxide should be stored in an airtight, nonmetallic container in a cool, dry place.

Versand/Shipping

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

läuterung 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.

Inkompatibilitäten

A strong base. 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. 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.

Inkompatibilitäten

Potassium hydroxide is a strong base and is incompatible with any compound that readily undergoes hydrolysis or oxidation. It should not be stored in glass or aluminum containers, and will react with acids, esters, and ethers, especially in aqueous solution.

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 Händler.

Global( 412)Lieferanten
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Jiangsu Kolod Food Ingredients Co.,Ltd.
+86-518-85110578 18805133257
+86-518-85110578 sales3257@jskolod.com CHINA 100 60
Shanghai Time Chemicals CO., Ltd.
+86-021-57951555
+86-021-57951555 jack.li@time-chemicals.com CHINA 1365 55
Mainchem Co., Ltd.
+86-0592-6210733
+86-0592-6210733 sales@mainchem.com CHINA 32447 55
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86-0551-65418684 18949823763
86-0551-65418684 info@tnjchem.com China 1852 55
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+86-371-86658258
sales@coreychem.com CHINA 29979 58
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1310-58-3(Kaliumhydroxid)Verwandte Suche:


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