Calciumhydrid Produkt Beschreibung

CALCIUM HYDRIDE Struktur
7789-78-8
  • CAS-Nr.7789-78-8
  • Bezeichnung:Calciumhydrid
  • Englisch Name:CALCIUM HYDRIDE
  • Synonyma:Calciumhydrid
    CaH2;Hydrolete;Hydrolith;Cakium hydride;CALCIUM HYDRIDE;Dihydridecalcium;Calciumhydridemm;Calciumhydridemesh;Calciumhydride,95%;calciumhydride(cah2)
  • CBNumber:CB0115234
  • Summenformel:CaH2
  • Molgewicht:42.09
  • MOL-Datei:7789-78-8.mol
Calciumhydrid physikalisch-chemischer Eigenschaften
  • Schmelzpunkt: :190 °C(lit.)
  • Dichte :1.9
  • storage temp.  :Store at RT.
  • Aggregatzustand :powder
  • Farbe :Light gray
  • Wichte :1.9
  • Wasserlöslichkeit :Soluble in water and alcohol. Insoluble in benzene.
  • Sensitive  :Moisture Sensitive
  • Merck  :14,1672
  • Stabilität: :Stable, but reacts violently with water, liberating and igniting hydrogen. Contact with strong oxidizers may cause fire or explosion. Incompatible with strong oxidizing agents, strong acids, halogens, water, alcohols.
  • InChIKey :FAQLAUHZSGTTLN-UHFFFAOYSA-N
  • CAS Datenbank :7789-78-8(CAS DataBase Reference)
  • NIST chemische Informationen :calcium hydride(7789-78-8)
  • EPA chemische Informationen :Calcium hydride (CaH2)(7789-78-8)
Sicherheit
  • Kennzeichnung gefährlicher :F
  • R-Sätze: :15
  • S-Sätze: :24/25-43-7/8-43A
  • RIDADR  :UN 1404 4.3/PG 1
  • WGK Germany  :1
  • TSCA  :Yes
  • HazardClass  :4.3
  • PackingGroup  :I
  • HS Code  :28500090

CALCIUM HYDRIDE Chemische Eigenschaften,Einsatz,Produktion Methoden

  • R-Sätze Betriebsanweisung: R15:Reagiert mit Wasser unter Bildung hochentzündlicher Gase.
  • S-Sätze Betriebsanweisung: 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").
    S7/8:Behälter trocken und dicht geschlossen halten.
  • Beschreibung Calcium hydride is a gray powder (white if pure, which is rare). It reacts vigorously with water liberating H2 gas. CaH2 is thus used as a drying agent, i.e. a desiccant. It is prepared directly from the metal or by reacting CaCO3 with hydrogen at elevated temperatures. The overall reaction is shown as follows:
    CaCO3+heat+H2→CaH2+H2O+CO2
    CaH2 is a saline hydride, meaning that its structure is salt-like. The alkali metals and the alkaline earth metals all form saline hydrides. These species are insoluble in all solvents with which they do not react because they have extended structures. CaH2 crystallizes in the PbCl2 structural pattern.
    The reaction of CaH2 with water can be represented as follows:
    CaH2+2H2O0Ca(OH)2+2H2
    The two hydrolysis products, H2, a gas, and Ca(OH)2, an aqueous mixture of solid plus liquid (i.e. a slurry), are readily separated from the solvent by distillation, filtration, or decantation.
  • Chemische Eigenschaften greyish-white solid
  • Verwenden Calcium hydride is a relatively mild desiccant. It is safer than the more reactive agents such as sodium metal. Calcium hydride is widely used as a desiccant for basic solvents such as amines and pyridine in organic syntheses. It is also used to pre-dry solvents prior to the use of a more reactive desiccant. The compound has, however, been widely used for decades as a safe and convenient means to inflate weather balloons. Likewise, it is regularly used in laboratories to produce small quantities of highly pure hydrogen for experiments.
  • Verwenden To prepare rare metals by reduction of their oxides; as a drying agent for liquids and gases; to generate hydrogen: 1 g of calcium hydride in water liberates 1 liter of hydrogen at STP; in organic syntheses.
  • Allgemeine Beschreibung Grayish-colored lump or crystalline solid. Irritating to skin and eyes. Used to make other chemicals.
  • Air & Water Reaktionen Ignites in air or reacts violently, sometimes explosively, with air of high humidity [Bretherick 1979 p. 107]. Reacts exothermically with water to generate flammable hydrogen gas and calcium hydroxide, a base. [Merck, 11th ed. 1989].
  • Reaktivität anzeigen When silver fluoride is ground with CALCIUM HYDRIDE the mass becomes incandescent [Mellor 3:389 1946-47]. Heating the hydride strongly with chlorine, bromine, or iodine leads to incandescence. Mixtures of the hydride with various bromates, i.e. barium bromate; chlorates, i.e. barium chlorate, and perchlorates, i.e. potassium perchlorate; explode on grinding, [Mellor, 1946, vol. 3, 651]. CaH2 reacts incandescently with AgF if subject to friction. (Mellor, 1941, Vol. 3, 389, 651).
  • Hazard Evolves highly flammable hydrogen when wet; solid product is slaked lime. Irritating to skin.
  • Health Hazard Inhalation or contact with vapors, substance or decomposition products may cause severe injury or death. May produce corrosive solutions on contact with water. Fire will produce irritating, corrosive and/or toxic gases. Runoff from fire control may cause pollution.
  • 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.
CALCIUM HYDRIDE Upstream-Materialien And Downstream Produkte
Upstream-Materialien
Downstream Produkte
Calciumhydrid Anbieter Lieferant Produzent Hersteller Vertrieb Händler.
Global(168)Suppliers
  • Firmenname:Hebei Daohui Chemical Co.,LTD
  • Telefon:+86 18612009158
  • Fax:+86 0316-8063153
  • E-Mail:251818762@qq.com
  • Land:China
  • Produktkatalog:11
  • Edge Rate:62
  • Firmenname:J & K SCIENTIFIC LTD.
  • Telefon:400-666-7788 +86-10-82848833
  • Fax:86-10-82849933
  • E-Mail:jkinfo@jkchemical.com;market6@jkchemical.com
  • Land:China
  • Produktkatalog:96815
  • Edge Rate:76
  • Firmenname:Meryer (Shanghai) Chemical Technology Co., Ltd.
  • Telefon:+86-(0)21-61259100(Shanghai) +86-(0)755-86170099(ShenZhen) +86-(0)10-62670440(Beijing)
  • Fax:+86-(0)21-61259102(Shanghai) +86-(0)755-86170066(ShenZhen) +86-(0)10-88580358(Beijing)
  • E-Mail:sh@meryer.com
  • Land:China
  • Produktkatalog:40269
  • Edge Rate:62
  • Firmenname:3B Pharmachem (Wuhan) International Co.,Ltd.
  • Telefon:86-21-50328103 * 801、802、803、804 Mobile:18930552037
  • Fax:86-21-50328109
  • E-Mail:3bsc@sina.com
  • Land:China
  • Produktkatalog:15881
  • Edge Rate:69
  • Firmenname:Alfa Aesar
  • Telefon:400-610-6006; 021-67582000
  • Fax:021-67582001/03/05
  • E-Mail:saleschina@alfa-asia.com
  • Land:China
  • Produktkatalog:30163
  • Edge Rate:84
  • Firmenname:Beijing dtftchem Technology Co., Ltd.
  • Telefon:13651141086; 86(10)60275028、60275820
  • Fax:86 (10) 60270825
  • E-Mail:dtftchem@sina.com
  • Land:China
  • Produktkatalog:1403
  • Edge Rate:62
  • Firmenname:Energy Chemical
  • Telefon:021-58432009 / 400-005-6266
  • Fax:021-58436166-800
  • E-Mail:info@energy-chemical.com
  • Land:China
  • Produktkatalog:44025
  • Edge Rate:61
  • Firmenname:Beijing Ouhe Technology Co., Ltd
  • Telefon:+86-10-4006331231;+86-10-51280831;+86-10-82967028
  • Fax:+86-10-82967029
  • E-Mail:sales@ouhechem.com
  • Land:China
  • Produktkatalog:12495
  • Edge Rate:60
  • Firmenname:JinYan Chemicals(ShangHai) Co.,Ltd.
  • Telefon:13817811078,021-50426030
  • Fax:86-021-50426522,50426273
  • E-Mail:sales@jingyan-chemical.com
  • Land:China
  • Produktkatalog:10011
  • Edge Rate:60
7789-78-8, CALCIUM HYDRIDE Verwandte Suche:
  • CALCIUM HYDRIDE, GREY CHUNKSCALCIUM HYDRIDE, GREY CHUNKSCALCIUM HYDRIDE, GREY CHUNKSCALCIUM HYDRIDE, GREY CHUNKS
  • Hot selling Calcium Hydride
  • calcium hydride E:candyli(at)speedgainpharma(dot)com
  • CALCIUM HYDRIDE
  • Cakium hydride
  • CaH2
  • Calcium hydride (CaH2)
  • Calcium hydride, ca. 93%, 0-20 mm grain size, up to 15% powder, extra pure
  • Calcium hydride, ca. 93%, 0-2 mm grain size, extra pure
  • Calcium hydride, ca. 93%, 10-100 mm pieces, extra pure
  • Calcium hydride, 0-20 mm grain size, up to 15% powder, extra pure
  • Calcium hydride, 0-2 mm grain size, extra pure
  • Calcium hydride, 10-100 mm pieces, extra pure
  • Dihydridecalcium
  • Calcium hydride, 92% min
  • Calcium hydride,ca. 93%,extra pure,10-100 mmpieces
  • Calcium hydride,ca. 93%,extra pure,0-20 mm grain size, up to 15% powder
  • Calcium hydride,ca. 93%,extra pure,0-2 mm grain size
  • CalciuM Chloride (AS)
  • CalciuM hydride, 0-2 MM grain size, extra pure, ca. 93% 100GR
  • CalciuM hydride, 0-2 MM grain size, extra pure, ca. 93% 500GR
  • CalciuM hydride, 10-100 MM pieces, extra pure, ca. 93% 100GR
  • CalciuM hydride, 10-100 MM pieces, extra pure, ca. 93% 500GR
  • calciumhydride(cah2)
  • Hydrolete
  • Hydrolith
  • Calciumhydridemesh
  • Calciumhydridemm
  • Calciumhydridemmwhitegraygranules
  • Calciumhydridesticks
  • CALCIUM HYDRIDE, REAGENT GRADE, 95%
  • CALCIUM HYDRIDE REAGENT GRADE 95%
  • CALCIUM HYDRIDE, POWDER
  • Calcium hydride, powder, 99.99% metals basis
  • Calcium hydride, 99.9% metals basis
  • CALCIUM HYDRIDE, COARSE GRANULES, -4+40 MESH, 95%
  • CALCIUM HYDRIDE, POWDER, 0-2mm, 90-95%
  • Calciumhydride,coarsepowder,ca92%
  • Calciumhydride,90-95%
  • Calcium hydride, 0-2 mm grain size, extra pure, ca. 93%
  • Calcium hydride, 0-20 mm grain size, up to 15% powder, extra pure, ca. 93%
  • Calcium hydride, 10-100 mm pieces, extra pure, ca. 93%
  • Calciumhydride,95%
  • calcium hydride, coarse powder
  • CALCIUMHYDRIDE,ANHYDROUS
  • CALCIUM HYDRIDE, COARSE POWDER: CA 92%
  • Calcium hydride, 98% (metals basis excluding Mg), Mg <1%
  • Calcium hydride, 88-96%
  • CALCIUM HYDRIDE FOR SYNTHESIS
  • CalciuM Hydride, Anhydrous, Desiccant, 4-40 Mesh
  • CalciuM hydride, grain size: 0 - 2 MM
  • CalciuM hydride, 99.99% Metals basis
  • Calcium hydride 99.9% trace metals basis
  • Calcium hydride powder, 0-2 mm, reagent grade, >=90% (gas-volumetric)
  • Calcium hydride purum p.a., >=97.0% (gas-volumetric), powder
  • Calcium hydride reagent grade, 95% (gas-volumetric)
  • Calcium hydride, 98% trace metals basis excluding Mg
  • Calcium hydride, technical, 90%