calcium hydride melting point

US2082134A US50569A US5056935A US2082134A US 2082134 A US2082134 A US 2082134A US 50569 A US50569 A US 50569A US 5056935 A US5056935 A US 5056935A US 2082134 A US2082134 A US 2082134A Authority US United States Prior art keywords hydrogen magnesium calcium calcium hydride retort Prior art date 1935-11-19 Legal status (The legal status is an assumption and is not a legal … Calcium (atomic symbol: Ca, atomic number: 20) is a Block S, Group 2, Period 4 element with an atomic weight of 40.078. If it is dissolved in water it reacts violently, producing hydrogen. 1.9 g/cm3 at 20.0 °C Water solubility (Not applicable) They conduct electricity in molten state liberating a diatomic molecule of hydrogen gas at the anode. Synthesis. Soluble in water and alcohol. When silver fluoride is ground with CALCIUM HYDRIDE the mass becomes incandescent [Mellor 3:389 1946-47]. Melting Point (MP), Calcium hydride changes its state from solid to liquid at 816°C (1500.8°F or 1089.15K) Calcium hydride is a gray orthorhombic crystal or powder compound. Calcium Hydride is generally immediately available in most volumes. CaH 2 is sold by various chemical suppliers. Calcium hydride for synthesis. Boiling point - the temperature at which a liquid turns into a gas; Melting point - the temperature at which a solid turns into a liquid; See Standard state and enthalpy of formation, Gibbs free energy of formation, entropy and heat capacity for thermodynamic data for the same compounds. Figure 3: calcium hydride. Calcium is a solid at atmospheric presure up to the melting point of 842 0C. Heating melting point less than they decomposition, with the water violent reaction of hydrogen released H 2 O CaH 2 +2 = Ca (OH) 2 +2 H 2? Generally, it is rare to find it in this form so it usually has a grayish tint. CaH2. Molecular Weight. Physical and chemical properties of calcium hydride . Melting Point: 190 C (lit.) It also reacts with alcohol (National Center for Biotechnology Information, S.F.). [Note: Readily absorbs CO 2 from the air to form calcium carbonate.] Preparation. - Find MSDS or SDS, a COA, data sheets and more information. a desiccant.. CaH 2 is a saline hydride, meaning that its structure is salt-like. HSDB 8095. Application: Calcium hydride has been used as a drying agent for organic solvents. Calcium hydrate, Caustic lime, Hydrated lime, Slaked lime White, odorless powder. Shop a large selection of Calcium products and learn more about Calcium hydride, 90-95%, Alfa Aesar™: Metals Salts and Inorganics . Chemsrc provides Sodium hydride(CAS#:7646-69-7) MSDS, density, melting point, boiling point, structure, formula, molecular weight etc. Chemical Name. Properties of calcium hydride: White, melts without decomposition in the atmosphere of hydrogen, at further heating decomposes. Calcium hydride is a grey or white solid powder, insoluble in all solvents. BuyersGuideChem provides reliable information about Calcium hydride (7789-78-8) like chemical properties, structure, melting point density, molecular formula, molecular weight, physical properties, toxicity information. Product name : Calcium Hydride CAS-No. Calcium hydride may be made by the reaction of calcium metal with hydrogen gas. The melting point is specific for a given substance. The melting point depends on the pressure. ... Melting point/freezing Melting point/range: 190 °C - lit. EINECS 232-189-2 Ionic hydride has both high melting point and the boiling point as all metal compounds usually do They have high density since these are stable molecules. 7789-78-8. Calcium hydride is a set of crystals of white orthorhombic structure when it is pure. ... Melting point/ range 816.0 °C Decomposition temperature 600 °C Density ca. Metal hydrides can release and absorb hydrogen at certain temperatures based on their thermodynamics. Insoluble in benzene. Melting point. a desiccant.. CaH 2 is a saline hydride, meaning that its structure is salt-like. Calcium hydride CaH 2 chemical formula, molecular weight 42.096. Storage & Sensitivity. Synonyms. The alkali metals and the alkaline earth metals all form saline hydrides. It has a molecular mass of 42.094 g/mol, a melting point of 816 degrees celcius, ad a density of 1.70 g/ml. Physical and chemical properties Physical State Solid Appearance Grey Odor Odorless Odor Threshold No information available pH No information available Melting Point/Range 675 °C / 1247 °F Boiling Point/Range No information available Flash Point No information available Evaporation Rate Not applicable Articles of Sodium hydride are included as well. American Elements offers a broad range of products for hydrogen storage research, advanced fuel cells and battery applications. CaH2 + 2H2O = Ca(OH)2 + 2H2 BeH 2 is a covalent polymer, magnesium hydride is partially ionic and the hydrides of calcium, strontium, and barium are very ionic and hydridic in their properties. Calcium dihydride; Calcium(II) hydride; CAS No. IUPAC Name: Calcium hydride Molecular Formula: CaH 2 Molecular Weight: 42.093880 g/mol Melting Point: 190 °C(lit.) Magnesium hydride is the chemical compound with the molecular formula MgH 2. Ambient temperatures. A strong reducing agent, reacts with water and acids. This page contains information on the chemical Calcium hydride including: 3 synonyms/identifiers; U.S. Code of Federal Regulations Title 49 Section 172 shipping regulations and proper shipping name; USDOT 2008 Emergency Response Guidebook initial response information. CaH 2 is thus used as a drying agent, i.e. 816 ° C melting point. CaH2 - CALCIUM HYDRIDE. Calcium hydride is the chemical compound with the formula CaH 2, and is therefore an alkaline earth hydride.This grey powder (white if pure, which is rare) reacts vigorously with water liberating hydrogen gas. Availability. CaH 2 has a density of 1.70 g/cm 3. Is oxidized in air. 1.900. It reacts vigorously with water and alcohols. It contains 7.66% by weight of hydrogen and has been studied as a potential hydrogen storage medium. Dangers and reactivity. Heating the hydride strongly with chlorine, bromine, or iodine leads to incandescence. Calcium hydride, 98% (metals basis excluding Mg), Alfa Aesar™ ... Melting Point: 600°C (decomposition) Quantity: 50g: Chemical Name or Material: Calcium hydride, Mg … Also known as: Calcium dihydride. Calcium hydride is the chemical compound with the formula CaH 2.This grey powder (white if pure, which is rare) reacts vigorously with water liberating hydrogen gas. Calcium hydride (CaH2) CaH2. calcium hydride is strong reductive. DTXSID60894886. : 7789-78-8 1.2 Relevant identified uses of the substance or mixture and uses advised against Identified uses : Laboratorychemicals, Industrial & for professional use only. It is also a temperature at which a solid (crystal) turns into a liquid. barium chlorate, and perchlorates, i.e. Calcium hydride, 98% (metals basis excluding Mg), Alfa Aesar™ Structure Search; Print SDS. For full table with Density, Liquid Denity at Melting Point and Water Solubility-rotate the screen! See more Calcium products. CAS 7789-78-8, chemical formula CaH₂. 42.09390 What is the chemical reaction of Calcium hydride with water? Calcium hydride. Calcium hydride is used primarily as a source of hydrogen, as a drying agent for liquids and gases, and as a reducing agent for metal oxides. Elements: Calcium (Ca), Hydrogen (H) Molecular weight: 42.094 g/mol. Solubility. We say that such a body melts. barium bromate; chlorates, i.e. Applications. The number of electrons in each of Calcium's shells is [2, 8, 8, 2] and its electron configuration is [Ar] 4s 2. The thermochemical energy storage properties of calcium hydride (CaH2) destabilised with either silicon (Si) or CaxSiy compounds at various molar rati… Ion - type salt compounds. Calcium hydride Revision Date 17-Jan-2018 9. The melting point is the highest temperature at which crystallization may occur. ... Melting Point: 600°C (decomposition) CAS: 7789-78-8: Molecular Formula: CaH 2: Solubility Information: K [35,, ]. Density: 1.70 g/cm 3 Sensitive: Moisture EINECS: 232-189-2 Appearance: Greyish-white solid Structure of Calcium hydride (CAS NO.7789-78-8): For example, the melting point of ice (frozen water) is 0 °C. EC Number: 232-189-2 UNSPSC Code: 12352300 General description: Calcium hydride shows promising abilities as a hydrogen storage system for alkaline fuel cells. 600° dec. Density. CaH 2 is thus used as a drying agent, i.e. Mixtures of the hydride with various bromates, i.e. Molecular Formula. Hydrogen can easily be generated from renewable energy sources and is the most abundant element in … Get global suppliers, vendor, prices, . It contains 7.66% by weight of hydrogen and has been studied as a potential hydrogen storage medium. From Wikipedia. Molecular formula: CaH 2. Melting point: 816°C (under hydrogen gas) Boiling point: Density: 1700 kg m-3; The following are some synonyms of calcium dihydride: calcium dihydride; calcium(II) hydride; calcium dihydride; The oxidation number of calcium in calcium dihydride is 2. It has a molecular weight of 42,094 g / mol, has a melting point of 816 degrees Celsius and a density of 1.70 g / ml. White powder. Calcium hydride is used as an efficient drying agent for aprotic base-stable solvents like ethers and tertiary amines. 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