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Potassium hydroxide

CAS No.1310-58-3
Chemical Name:Potassium hydroxide
Synonyms:KOH;LYE;POTASH;Potassa;Potassio;POTASH LYE;KOH/CH63857;Causicpotash;potassium lye;normanal0,1-N
CBNumber:CB3107908
Molecular Formula:HKO
Formula Weight:56.11
MOL File:1310-58-3.mol
Potassium hydroxide Property
Melting point : 361 °C(lit.)
Boiling point : 1320°C
density : 1.450 g/mL at 20 °C
vapor pressure : 1 mm Hg ( 719 °C)
refractive index : n20/D 1.421
Fp : 52 °F
storage temp. : 0-6°C
solubility : H2O: 1 M at 20 °C, clear, colorless
form : powder
Water Solubility : soluble
Sensitive : Air Sensitive & Hygroscopic
Merck : 14,7640
Stability:: 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.
CAS DataBase Reference: 1310-58-3(CAS DataBase Reference)
NIST Chemistry Reference: Potassium hydroxide(1310-58-3)
EPA Substance Registry System: Potassium hydroxide (K(OH))(1310-58-3)
Safety
Hazard Codes : C,F,T,Xi
Risk Statements : 34-35-22-11-39/23/24/25-23/24/25-36/38-36/37-67-52/53
Safety Statements : 7-16-36/37-45-36/37/39-26-61
RIDADR : UN 2924 3/PG 2
WGK Germany : 1
RTECS : TT2100000
F : 3
HazardClass : 8
PackingGroup : II
Hazardous Substances Data: 1310-58-3(Hazardous Substances Data)

Potassium hydroxide Chemical Properties,Usage,Production

Chemical Properties
white crystals, flakes, sticks or pellets
General Description
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 Reactions
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
Reactivity Profile
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].
Health Hazard
Causes severe burns of eyes, skin, and mucous membranes.
Fire Hazard
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.
Potassium hydroxide Preparation Products And Raw materials
Raw materials
Barium chloride dihydrate Potassium fluoride Potassium carbonate Potassium hydroxide solution MERCURY Hydrochloric acid Hydrogen Sodium hydroxide Barium chloride Potassium chloride Graphite Potassium amalgam
Preparation Products
4-(BENZYLTHIO)-3-NITROBENZALDEHYDE POLYETHYLENE GLYCOL MONOOLEYL ETHER 4-[(2-FURYLMETHYL)THIO]-3-NITROBENZALDEHYDE Potassium stearate Potassium tartrate oxalic acid, potassium salt Potassium hydrogen phthalate 2-Allylcyclohexanone 2-Amino-4-trifluoromethylbenzonitrile Organosilicon water-proofing agent 4-ETHOXYPHENYLACETIC ACID 2-BROMO-6-(1H-PYRAZOL-1-YL)PYRIDINE D-Glucosamine hydrochloride antistatic agent F695 4-(CYCLOHEXYLTHIO)-3-NITROBENZALDEHYDE 2-Benzylaminopyridine Potassium sorbate Potassium isobutylxanthate Tripotassium citrate 3,5-DIBROMO-2-ETHOXYBENZALDEHYDE Potassium metavanadate Antistatic agent PK Potassium lactate 2-(2,4-DINITROPHENOXY)ETHANOL Potassium fluoroaluminate 5-Hydroxymethyluracil Potassium citrate Piperonylic acid GELLAN GUM 1,2,3,4-TETRAHYDRO-9H-PYRIDO[3,4-B]INDOLE 4-ISOPROPOXYBENZOIC ACID PYRROLIDONE HYDROTRIBROMIDE 3-ACETYL-2-METHYL-QUINOLINE-4-CARBOXYLIC ACID Potassium titanium oxalate 2,3-Dimethylpyrazine 4-(4-CHLOROPHENYLTHIO)-3-NITROBENZALDEHYDE potassium silicate,electronic grade 2,3-Dimethylthiophene AMYLXANTHIC ACID POTASSIUM SALT Vat Grey M
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POTASH POTASH CAUSTIC POTASH LYE POTASSIUM HYDRATE POTASSIUM HYDROXIDE STANDARD POTASSIUM HYDROXIDE POTASSIUM HYDROXIDE ETHANOLIC POTASSIUM OXIDE HYDRATE Alphabetic META - METH Mass Spectrometry Reagents for Protein Sequencing Proteomics and Protein Expression Protein Analysis Protein Sequencing Stable Isotopes Solvents and Solutions for Mass Spectrometry Solvents Western Blotting Causicpotash causticpotashsolutions Hydroxyde de potassium hydroxydedepotassium hydroxydedepotassium(french) hydroxydedepotassium(solide) hydroxydedepotassium(solutions) Kaliumhydroxid Kaliumhydroxyde Potassa Potasse caustique potassecaustique potassecaustique(french) Potassio potassio(idrossidodi) Potassium hydroxide (K(OH)) potassium(hydroxydede) potassium(hydroxydede)(french) potassiumhydratesolutions potassiumhydroxide(k(oh)) potassiumhydroxide(non-specificname) potassiumhydroxide,[containingcorrosiveliquid] potassiumhydroxide,[drysolid,flake,bead,orgranular] potassiumhydroxidesolid potassiumhydroxidesolutions Vegetable alkali KALII HYDROXIDUM KOH CAUSTIC POTASH LYE 1310-58-3 Buffers and Reagents Buffers, Reagents, & Stains Analytical Standards BioChemical Analytical Chromatography Product Catalog Alphabetical Listings caustic potash, in aqueous solution caustic potash, solid
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