مرجع مواد شیمیایی ایران
اطلاعات عمومی کلسیم کاربید
  • نام شیمیایی

    • کلسیم کاربید

    • Calcium carbide

  • مترادف ها
    •  کاربید کلسیم

  • CAS
    75-20-7
  • فرمول مولکولی
    CaC2
  • جرم مولکولی
    60/01
  • EINECS
    200-848-3
  • ICB Number
    ICB 5501
  • شکل و حالت فیزیکی
    پودر سفید - خاکستری
  • نقطه ذوب
    2300 °C
  • دانسیته
    2/22 g/mL at 25 °C(lit.)
  • حلالیت در آب
    با آب واکنش می دهد
  • شماره CAS
    75-20-7
  • شماره مرک (Merck)
    14,1656
  • EPA Substance Registry System
  • مراجع MSDS
  • ارائه دهنده
    زبان
  • انگلیسی
  • Chemical Properties
    • grey or black solid with a garlic-like odour

  • General Description
    • Grayish-black irregular lump solid. Used to make acetylene and in steel manufacture.

  • Air & Water Reactions
    • Reacts rapidly with water to generate the flammable gas acetylene and the base calcium hydroxide. Enough heat may be generated to ignite the gas [Jones, G.W. BM Report Invest. 3755 1944].

  • Reactivity Profile

    Calcium carbide is a reducing agent. May react vigorously with oxidizing materials. The powdered mixture of the acetylide and iron oxide and iron chloride burns violently upon ignition, producing molten iron. Calcium carbide incandesces with chlorine, bromine, or iodine at 245, 350, or 305°C., respectively, [Mellor, 1946, Vol. 5, 862]. The carbide burns incandescently when mixed and heated with lead difluoride, magnesium, hydrogen chloride, and tin (II) chloride, [Mellor, 1946, 1940, 1946, and 1941], respectively. Interaction of Calcium carbide with methanol to give calcium methoxide is vigorous , but subject to an induction period of variable length. Once reaction starts, evolution of acetylene gas is very rapid, unpublished observations [Bretherick 1995]. Mixing Calcium carbide with silver nitrate solutions forms silver acetylide, a highly sensitive explosive. Copper salt solutions would behave similarly, [Photogr. Sci. Eng., 1966, 10, 334]. The mixture of Calcium carbide and sodium peroxide is explosive, as is Calcium carbide and perchloryl fluoride as gases at 100-300°C.

  • Health Hazard

    Eye and skin irritation

  • Fire Hazard

    Behavior in Fire: If wet by water, highly flammable acetylene gas is formed.

  • Preparation products

    Sodium hypochlorite-->Ethyl vinyl ether-->1,3-BUTADIENE-->Dichloroethane-->Carbon Black-->Trichloroethylene-->Polyvinyl chloride-->Acetylene-->Calcium cyanamide-->2-Butyne-1,4-diol-->Propargyl alcohol-->Cement dust-->2-Methyl-2-butanol-->Tetrapotassium hexacyanoferrate trihydrate-->Polychloroprene-->Sulfadiazine-->Difluoroethane-->VINYL CHLORIDE-->2-Butene-1,4-diol-->1,1,2,2-Tetrabromoethane-->2-Butene-1,4-diol-->1,1,2,2-TETRABROMOETHANE

  • Raw materials

    Calcium carbonate-->Calcium oxide-->CARBON MONOXIDE-->Carbon Black-->CALCIUM CARBONATE-->METALLURGICAL COKE-->Coke (coal) -->Electrode paste