مرجع مواد شیمیایی ایران
اطلاعات عمومی کلسیم هیدروکسید
  • نام شیمیایی

    • کلسیم هیدروکسید

    • Calcium hydroxide

  • مترادف ها
    •  هیدروکسید کلسیم

    • Slaked lime ; Milk of lime ; Caustic lime ; Calcium(II) hydroxide ; Pickling lime ; Hydrated lime ; Portlandite ; Calcium hydrate

  • CAS
    1305-62-0
  • فرمول مولکولی
    Ca(OH)2
  • جرم مولکولی
    74/093
  • EINECS
    215-137-3
  • ICB Number
    ICB 3351
کلسیم هیدروکسید
  • شکل و حالت فیزیکی
    پودر سفید
  • نقطه ذوب
    580 °C
  • نقطه جوش
    2850 °C
  • دانسیته
    2/24 g/mL at 25 °C(lit.)
  • ضریب شکست (n20/D­­)
    1/574
  • دمای نگهداری
    دمای اتاق
  • حلالیت در آب
    0/173 g/100 mL (20 °C)
  • اسیدیته (pka)
    12/4
  • بازیسیته (pkb)
    2/37
  • شماره CAS
    1305-62-0
  • شماره مرک (Merck)
    14,1673
  • NIST Chemistry Reference
  • EPA Substance Registry System
  • مراجع MSDS
  • ارائه دهنده
    زبان
  • انگلیسی
  • انگلیسی
  • انگلیسی
  • Chemical Properties
    • White powder

  • General Description
    • Odorless white granules. Sinks in water.

  • Air & Water Reactions
    • Water soluble. The amount of heat generated by hydrolysis may be large.

  • Reactivity Profile

    The nitroparaffins, nitromethane, nitropropane, etc. form salts with inorganic bases such as Calcium hydroxide . The dry salts are explosive [Chem. Eng. news 30:2344 1952]. Bases are chemically similar to sodium hydroxide (NaOH) or sodium oxide (Na2O). They neutralize acids exothermically to form salts plus water. When soluble in water they give solutions having a pH greater than 7.0. Mixing these materials with water can generate troublesome amounts of heat as the base is dissolved or diluted. Bases react with certain metals (such as aluminum and zinc) to form oxides or hydroxides of the metal and generate gaseous hydrogen. Bases may initiate polymerization reactions in polymerizable organic compounds, especially epoxides). They may generate flammable and/or toxic gases with ammonium salts, nitrides, halogenated organics, various metals, peroxides, and hydroperoxides. Materials of this group often serve as catalysts. A strong base. Forms caustic solution in water [Merck 11th ed. 1989].

  • Usage
    • 1. Calcium hydroxide Used for preparing bleaching powders, hard water softeners and the disinfecting and clarifying agents of tap water , as well as in building industry 2. Used for pharmacy. Used as rubber and oil industry additives. Used in lubricants for preventing coking, sludge deposition and anti-corrosion. Used as hard water softeners, disinfectants, antacids and so on. 3. Used as analytical reagents, carbon dioxide absorbents, as well as in organic synthesis 4. Used for making bleaching powder, hard water softener, depilatory, disinfectant, acid stop agent, astringent and various calcium salts. 5. Use for carbon dioxide examination and gas absorption. Used for leather hair removal, insecticide and water treatment.

  • Health Hazard

    Dust irritates eyes, nose and throat.

  • Preparation products

    Calcium iodate-->Calcium 5'-ribonucleotide-->Calcium formate -->HEXAMETHONIUM BROMIDE-->Calcium bromide-->Calcium nitrate-->4-Hydroxybenzamidine hydrochloride-->Sodium hypophosphite-->Tetrachloropropene-->2-CHLORO-6-HYDROXYBENZALDEHYDE-->1,2:3,4-Di-O-isopropylidene-D-galactopyranose-->CALCIUM IODIDE HYDRATE-->Calcium hypophosphite-->STEVIA-->Calcium nitrite-->4-Pyrimidinol-->Calcium tungstate-->Calcium thiocyanate-->Pyrimidine, 4-bromo- (8CI,9CI)-->Calcium phosphate-->Calcium 2-ethylhexanoate-->Calcium dipropionate-->SODIUM HYPOPHOSPHITE MONOHYDRATE-->Calcium-based grease-->Vicnna lime-->Calcium bis(cyclohexylsulphamate)-->Calcium peroxide-->calcium bis(2-(1-carboxylatoethoxy)-1-methyl-2-oxoethyl) distearate-->SODIUM ALGINATE-->CALCIUM SACCHARIN-->Lamepon A-->CALCIUM5INOSINATE-->CALCIUM5'-GUANYLATE-->Calcium bisulfite-->Calcium bis(2-hydroxy-4-(methylthio)butyrate)-->CALCIUM BROMATE-->MOLECULAR SIEVES-->CALCIUM GLYCEROPHOSPHATE-->CARBOXYMETHYLCELLULOSE CALCIUM (1.5 G) (AS)-->CALCIUM GLUTAMATE

  • Raw materials

    Calcium oxide-->CALCIUM CARBONATE-->METALLURGICAL COKE