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12013-56-8

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12013-56-8 Usage

Description

Calcium silicide has the molecular formula of Ca2Si and the molecular weight of 96.2514 g/mol. This salt can be formed by the reaction of Ca metal, mixed with Si, at 850°C in an inert atmosphere.

Chemical Properties

METAL PIECES

Physical properties

Calcium silicide, also called calcium disilicide, is an inorganic compound, a silicide of calcium. It is a whitish or dark gray to black solid matter with melting point between 700 and 935°C. It is insoluble in water, but may decompose when subjected to moisture, evolving hydrogen and producing calcium hydroxide. It decomposes in hot water. It is flammable and may ignite in air by producing silane that spontaneously ignites.

Uses

Different sources of media describe the Uses of 12013-56-8 differently. You can refer to the following data:
1. The uses of calcium silicide are many. Some of these include: ? Calcium silicide is used for manufacture of special metal alloys, e.g. for removing phosphorus and as a deoxidizer. ? In pyrotechnics, it is used as fuel to make special mixtures, e.g. for production of smokes, in flash compositions, and in percussion caps. ? Calcium silicide is used in the manufacture of certain initiatory, pyrotechnic and smoke compositions. ? The silicon and calcium alloy is mainly used as desulfurizing agent and deoxidizer for steel industry and casting industry. ? Calcium silicide has been found to be extremely corrosive to all metals including the refractory metals. It has been successfully contained in boron nitride for 36 h. ? The formation of calcium silicide (CaSi2) intermetallic through the simultaneous reduction of calcium oxide from the electrolyte and of the silica pellet and reduction of dissolved carbon dioxide. C
2. It is an important raw material used in Pharmaceutical intermediates. It is an ideal compound of deoxidizer and desulfurizer which can be used in production of many types of stainless steel. It is also used as inoculants and additive in cast iron.

Check Digit Verification of cas no

The CAS Registry Mumber 12013-56-8 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 1,2,0,1 and 3 respectively; the second part has 2 digits, 5 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 12013-56:
(7*1)+(6*2)+(5*0)+(4*1)+(3*3)+(2*5)+(1*6)=48
48 % 10 = 8
So 12013-56-8 is a valid CAS Registry Number.
InChI:InChI=1/Ca.Si2/c;1-2/q+2;-2

12013-56-8 Well-known Company Product Price

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  • Alfa Aesar

  • (14676)  Calcium silicide, tech. Ca ≈30%, may contain up to 5% Fe   

  • 12013-56-8

  • 10g

  • 174.0CNY

  • Detail
  • Alfa Aesar

  • (14676)  Calcium silicide, tech. Ca ≈30%, may contain up to 5% Fe   

  • 12013-56-8

  • 100g

  • 502.0CNY

  • Detail
  • Alfa Aesar

  • (14676)  Calcium silicide, tech. Ca ≈30%, may contain up to 5% Fe   

  • 12013-56-8

  • 500g

  • 2167.0CNY

  • Detail
  • Aldrich

  • (21240)  Calciumsilicide  technical

  • 12013-56-8

  • 21240-250G-F

  • 494.91CNY

  • Detail
  • Aldrich

  • (21240)  Calciumsilicide  technical

  • 12013-56-8

  • 21240-1KG-F

  • 1,377.09CNY

  • Detail

12013-56-8SDS

SAFETY DATA SHEETS

According to Globally Harmonized System of Classification and Labelling of Chemicals (GHS) - Sixth revised edition

Version: 1.0

Creation Date: Aug 20, 2017

Revision Date: Aug 20, 2017

1.Identification

1.1 GHS Product identifier

Product name CALCIUM SILICIDE

1.2 Other means of identification

Product number -
Other names CALCIUM SILICIDE POWDER

1.3 Recommended use of the chemical and restrictions on use

Identified uses For industry use only.
Uses advised against no data available

1.4 Supplier's details

1.5 Emergency phone number

Emergency phone number -
Service hours Monday to Friday, 9am-5pm (Standard time zone: UTC/GMT +8 hours).

More Details:12013-56-8 SDS

12013-56-8Relevant articles and documents

Thermodynamic stabilities of intermediate phases in the Ca-Si system

Brutti,Ciccioli,Balducci,Gigli,Manfrinetti,Napoletano

, p. 525 - 531 (2001)

Vaporization thermodynamics in the binary system calcium-silicon has been studied by Knudsen effusion-mass spectrometry and vacuum microbalance techniques. The equilibrium partial pressure of Ca(g) over the two-phase regions in the composition range 20-75

Dumbbells of five-connected silicon atoms and superconductivity in the binary silicides MSi3 (M = Ca, Y, Lu)

Schwarz, Ulrich,Wosylus, Aron,Rosner, Helge,Schnelle, Walter,Ormeci, Alim,Meier, Katrin,Baranov, Alexey,Nicklas, Michael,Leipe, Susann,Mueller, Carola J.,Grin, Yuri

, p. 13558 - 13561 (2012)

The new metastable binary silicides MSi3 (M = Ca, Y, Lu) have been synthesized by high-pressure, high-temperature reactions at pressures between 12(2) and 15(2) GPa and temperatures from 900(100) to 1400(150) K. The atomic patterns comprise int

Evers, Juergen,Oehlinger, Gilbert,Weiss, Armin

, p. 399 - 402 (1980)

Phase selection during calcium silicide formation for layered and powder growth

Wen, Cuilian,Kato, Akihiko,Nonomura, Tomomi,Tatsuoka, Hirokazu

, p. 4583 - 4587 (2011)

Phase selection during Ca silicide formation was discussed using the chemical potential and the effective heat of formation (ΔH′) models. The compositional analyses of Ca silicides were experimentally carried out in detail for both the layered and powder

High pressure synthesis and crystal structure of a ternary superconductor Ca2Al3Si4 containing layer structured calcium sub-network isomorphous with black phosphorus

Tanaka, Masashi,Zhang, Shuai,Tanaka, Yuki,Inumaru, Kei,Yamanaka, Shoji

, p. 445 - 451 (2013)

The Zintl compound CaAl2Si2 is peritectically decomposed to a mixture of Ca2Al3Si4 and aluminum metal at temperatures above 600 °C under a pressure of 5 GPa. The new ternary compound Ca2Al3Sl4 crystalizes with the space group Cmc21 and the lattice parameters a=5.8846(8), b=14.973(1), and c=7.7966(5) A. The structure is composed of aluminum silicide framework [Al3Si4] and layer structured [Ca 2] network interpenetrating with each other. The electron probe microanalysis (EPMA) shows the formation of solid solutions Ca 2Al3-xSi4+x (x2] sub-network is isomorphous with black phosphorus. The new ternary compound shows superconductivity with a transition temperature (T c) of 6.4 K. The band structure calculation suggests that the superconductivity should occur through the conduction bands mainly composed of 3p orbitals of the aluminum silicide framework.

Heat capacity and thermodynamic properties of some Ca silicides

Canepa,Napoletano,Manfrinetti,Palenzona

, p. 20 - 23 (2000)

The heat capacities of three Ca compounds, namely CaSi2, Ca3Si4 and Ca14Si19 were measured in the 3-300 K temperature range by adiabatic calorimetry. No thermal anomalies were found in the whole temperature range. In the three Ca silicides, from an analysis of the low temperature data (Ta power law lower than three in the lattice heat capacity behaviour was observed and tentatively ascribed to the layered structure of the compounds, in agreement with structural informations. From heat capacity data the thermodynamic functions entropy, enthalpy and Gibbs energy were calculated at 298 K.

Effect of electrolysis potential on reduction of solid silicon dioxide in molten CaCl2

Yasuda, Kouji,Nohira, Toshiyuki,Ito, Yasuhiko

, p. 443 - 447 (2005)

Electrochemical reduction of solid SiO2 by using a contacting electrode method was investigated in molten CaCl2 at 1123 K. The samples were prepared by potentiostatic electrolysis at 0.35-1.30 V (vs. Ca 2+/Ca) for 1 h. From the results of XRD, SEM and EPMA, it was confirmed that SiO2 was electrochemically reduced to Si at 1.25 V or more negative potential, which agreed with the thermodynamic calculation. The current-time curves during electrolysis and the cross-sectional SEM measurements of the samples clearly showed that reduction rate is higher at more negative potential. In addition, Si-Ca alloy formation was confirmed at 0.35 V.

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