مرجع مواد شیمیایی ایران
اطلاعات عمومی پتاسیم هیدروکسید
  • نام شیمیایی

    • پتاسیم هیدروکسید

    • Potassium hydroxide

  • مترادف ها
    • پتاس ; هیدروکسید پتاسیم ; پتاس سوزآور

    • Caustic potash ; Lye ; Potash lye ; Potassia ; Potassium hydrate

  • CAS
    1310-58-3
  • فرمول مولکولی
    KOH
  • جرم مولکولی
    56/11
  • EINECS
    215-181-3
  • ICB Number
    ICB 3347
پتاسیم هیدروکسید
  • شکل و حالت فیزیکی
    جامد سفید رنگ
  • نقطه ذوب
    360 °C
  • نقطه جوش
    1327 °C
  • دانسیته
    2/044 g/cm3 (20 °C)
  • فشار بخار
    1 mm Hg ( 719 °C)
  • ضریب شکست (n20/D­­)
    1/409 (20 °C)
  • دمای نگهداری
    0-6 °C
  • حلالیت در آب
    121 g/100 mL (25 °C)
  • اسیدیته (pka)
    13/5
  • شماره CAS
    1310-58-3
  • شماره مرک (Merck)
    14,7640
  • NIST Chemistry Reference
  • EPA Substance Registry System
  • مراجع MSDS
  • ارائه دهنده
    زبان
  • انگلیسی
  • انگلیسی
  • 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.

  • Preparation products

    2-Amino-4-trifluoromethylbenzonitrile-->2,3-Dimethylthiophene-->Vat Grey M-->Antistatic agent PK-->Potassium sorbate -->Potassium fluoroaluminate-->GELLAN GUM-->2,3-Dimethylpyrazine-->2-BROMO-6-(1H-PYRAZOL-1-YL)PYRIDINE-->5-Hydroxymethyluracil-->4-ISOPROPOXYBENZOIC ACID-->1,2,3,4-TETRAHYDRO-9H-PYRIDO[3,4-B]INDOLE-->PYRROLIDONE HYDROTRIBROMIDE-->3,5-DIBROMO-2-ETHOXYBENZALDEHYDE-->3-ACETYL-2-METHYL-QUINOLINE-4-CARBOXYLIC ACID-->4-(CYCLOHEXYLTHIO)-3-NITROBENZALDEHYDE-->antistatic agent F695-->POLYETHYLENE GLYCOL MONOOLEYL ETHER-->Tripotassium citrate-->Potassium isobutylxanthate-->Potassium tartrate-->AMYLXANTHIC ACID POTASSIUM SALT-->4-(4-CHLOROPHENYLTHIO)-3-NITROBENZALDEHYDE-->4-[(2-FURYLMETHYL)THIO]-3-NITROBENZALDEHYDE-->4-(BENZYLTHIO)-3-NITROBENZALDEHYDE-->2-(2,4-DINITROPHENOXY)ETHANOL-->Piperonylic acid-->Potassium citrate-->Organosilicon water-proofing agent-->4-ETHOXYPHENYLACETIC ACID-->2-Benzylaminopyridine-->Potassium stearate-->Potassium titanium oxalate-->oxalic acid, potassium salt -->Potassium hydrogen phthalate-->D-Glucosamine hydrochloride-->2-Allylcyclohexanone-->Potassium metavanadate-->potassium silicate,electronic grade-->Potassium lactate

  • Raw materials

    Sodium hydroxide-->Hydrochloric acid-->Potassium carbonate-->Hydrogen-->Potassium chloride -->Graphite-->Potassium hydroxide solution-->Potassium fluoride-->Barium chloride dihydrate-->Barium chloride-->MERCURY-->Potassium amalgam