Calcium Produkt Beschreibung

Calcium Struktur
7440-70-2
  • CAS-Nr.7440-70-2
  • Bezeichnung:Calcium
  • Englisch Name:Calcium
  • Synonyma:Calcium;Elementares Calcium;Kalzium
    Praval;NA 1401;Calcicat;calcium(0);Calcium shot;Calcium atom;CALCIUM METAL;Calcium, 99.5%;LOWCALCIUMDIET;Atomic calcium
  • CBNumber:CB6854193
  • Summenformel:Ca
  • Molgewicht:40.08
  • MOL-Datei:7440-70-2.mol
Calcium physikalisch-chemischer Eigenschaften
  • Schmelzpunkt: :850 °C(lit.)
  • Siedepunkt: :1484 °C(lit.)
  • Dichte :1.54 g/mL at 25 °C(lit.)
  • RTECS-Nr. :EV8040000
  • storage temp.  :water-free area
  • Aggregatzustand :pieces
  • Farbe :Silver-white
  • Wichte :1.54
  • Widerstand (resistivity) :3.5 μΩ-cm, 20°C
  • Wasserlöslichkeit :reacts with H2O, alcohols, dilute acids to evolve H2 [MER06]
  • Sensitive  :air sensitive, moisture sensitive
  • Merck  :13,1644
  • BRN  :4241647
  • Stabilität: :Stable, but reacts with water to release hydrogen and produce calcium hydroxide. Incompatible with strong oxidizing agents, alcohols, moisture.
  • CAS Datenbank :7440-70-2(CAS DataBase Reference)
Sicherheit
  • Kennzeichnung gefährlicher :F
  • R-Sätze: :15
  • S-Sätze: :8-24/25-43
  • RIDADR  :UN 1401 4.3/PG 2
  • WGK Germany  :1
  • TSCA  :Yes
  • HazardClass  :4.3
  • PackingGroup  :II
  • HS Code  :28051200

Calcium Chemische Eigenschaften,Einsatz,Produktion Methoden

  • ERSCHEINUNGSBILD GLäNZENDES SILBERWEISSES METALL (AN FRISCHEN SCHNITTFLäCHEN); VERFäRBT SICH BLäULICH GRAU AN FEUCHTER LUFT.
  • PHYSIKALISCHE GEFAHREN Entzündet sich in feinverteilter Form an der Luft.
  • CHEMISCHE GEFAHREN Reagiert mit Wasser, Alkohol und verdünnten Säuren unter Bildung leichtentzündlichen Wasserstoffs. Reagiert mit Halogenen. Brennt an der Luft. Kontakt mit Alkalihydroxiden oder -carbonaten kann Explosionen verursachen.
  • ARBEITSPLATZGRENZWERTE TLV nicht festgelegt (ACGIH 2005).
    MAK nicht festgelegt (DFG 2005).
  • WIRKUNGEN BEI KURZZEITEXPOSITION WIRKUNGEN BEI KURZZEITEXPOSITION:
    Die Substanz reizt die Augen.
  • LECKAGE Alle Zündquellen entfernen. Verschüttetes Material in Behältern sammeln. NICHT in die Kanalisation spülen. Reste sorgfältig sammeln. An sicheren Ort bringen. NICHT mit Sägemehl oder anderen brennbaren Absorptionsmitteln binden. Persönliche Schutzausrüstung: Vollschutzanzug mit umgebungsluftunabhängigem Atemschutzgerät.
  • R-Sätze Betriebsanweisung: R15:Reagiert mit Wasser unter Bildung hochentzündlicher Gase.
  • S-Sätze Betriebsanweisung: S8:Behälter trocken halten.
    S24/25:Berührung mit den Augen und der Haut vermeiden.
    S43:Zum Löschen . . . (vom Hersteller anzugeben) verwenden (wenn Wasser die Gefahr erhöht, anfügen: "Kein Wasser verwenden").
  • Chemische Eigenschaften softish silver-white metal
  • Chemische Eigenschaften Calcium is a silvery-white metal when freshly cut, which tarnishes to a blue-gray color in air. It can also be found as a powder.
  • Verwenden Reducing agent for production of less common metals; alloying agent to increase strength and corrosion resistance in lead, to improve mechanical and electrical properties in aluminum; refining agent to remove bismuth from lead. In metallurgy as scavenger to deoxidize, desulfurize and degas steel and cast iron; to control non-metallic inclusions in steel; to promote uniform microstructure in gray iron. As anode material in thermal batteries; as "getter" for oxygen and nitrogen.
  • Verwenden Calcium is used as a deoxidizer for copper,steel, and beryllium in metallurgy; to hardenlead for bearing; and in making alloys.
  • Definition Alkaline-earth element of atomic number 20, group IIA of the periodic table. Aw 40.08. Valence 2. Six stable isotopes.
  • Allgemeine Beschreibung A silvery, soft metal that turns grayish white on exposure to air. Used in metallurgy.
  • Air & Water Reaktionen Pyrophoric ignites in air when finely divided, then burns with crimson flame [Merck 11th ed. 1989]. Calcium rapidly decomposes in water, the heat of reaction is sufficient that hydrolysis released hydrogen may ignite [Lab. Gov. Chemist 1966].
  • Reaktivität anzeigen Boron trifluoride reacts with incandescence when heated with alkali metals or alkaline earth metals except magnesium [Merck 11th ed. 1989]. Calcium reacts violently with acids [Lab. Govt. Chemist 1965]. Finely divided Calcium burns spontaneously in chlorine at elevated temperatures [Mellor 3:637, 638, 651 1946-47]. Finely divided or massive Calcium burns spontaneously in fluorine at ordinary temperatures. Calcium is incompatible with metal oxides, alkali metal hydroxides, chlorine fluorides, dinitrogen tetraoxide, and sulfur(with sulfur reacts explosively when ignited) [Bretherick, 5th Ed., 1995].
  • Hazard Evolves hydrogen with moisture. Flammable in finely divided state. Fire and explosion hazard when heated or on contact with strong oxidizing agents.
  • Health Hazard Contact of dusts with skin or eyes can causeburns. It reacts with moisture on skin to formcaustic hydroxide, which may cause sucha burn. Fumes from burning calcium are astrong irritant to the eyes, skin, and mucousmembranes.
  • Health Hazard Contact with eyes or skin produces caustic burns.
  • Brandgefahr Produce flammable gases on contact with water. May ignite on contact with water or moist air. Some react vigorously or explosively on contact with water. May be ignited by heat, sparks or flames. May re-ignite after fire is extinguished. Some are transported in highly flammable liquids. Runoff may create fire or explosion hazard.
  • mögliche Exposition Calcium is used as a raw material for aluminum, copper, and lead alloys.
  • läuterung methode Clean the metal by washing it with ether to remove adhering paraffin, file the surface in an argon-filled glove box, and wash it with ethanol containing 2% of conc HCl. Then wash it with dry ethanol, dry it in a vacuum and store it under pure argon [Addison et al. J Chem Soc 3868 1962].
  • Inkompatibilitäten Forms hydrogen gas on contact with air; finely divided material or dust may ignite spontaneously. A strong reducing agent; reacts violently with water, acids, strong oxidizers (such as chlorine, bromine, and fluorine), alkaline carbonates, dinitrogen tetroxide; halogenated hydrocarbons; lead chloride, halogens, alkaline hydroxides, oxygen, silicon, sulfur, chlorine, fluorine, chlorine trifluoride, and many other substances. Reacts with water to produce flammable hydrogen gas
Calcium Upstream-Materialien And Downstream Produkte
Upstream-Materialien
Downstream Produkte
Calcium Anbieter Lieferant Produzent Hersteller Vertrieb Händler.
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7440-70-2, Calcium Verwandte Suche:
  • Calcium pieces, <1 cm, 99%
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