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MAGNESIUM SILICIDE

MAGNESIUM SILICIDE
MAGNESIUM SILICIDE structure
CAS No.
22831-39-6
Chemical Name:
MAGNESIUM SILICIDE
Synonyms
PubChem ID: 89858;MAGNESIUM SILICIDE;dimagnesium silicide;magnesiumsilicide(mg2si);MAGNESIUM SILICIDE -45 MY;Magnesium silicide, powder;Silanediylidenedimagnesium;MagnesiuM silicide, 99.99%;MagnesiumsilicideCmeshgraypowder;Magnesiumsilicide,99.5%(metalsbasis)
CBNumber:
CB3115750
Molecular Formula:
Mg2Si
Formula Weight:
76.7
MOL File:
22831-39-6.mol

MAGNESIUM SILICIDE Properties

Melting point:
1102 °C
Density 
1,94 g/cm3
form 
Powder
Specific Gravity
2.
color 
Blue
Water Solubility 
Insoluble in water and denser than water.
Sensitive 
Air & Moisture Sensitive
Merck 
14,5688
Stability:
Spontaneously flammable - mixtures with air are explosive. Reacts with water to form toxic vapours.
SAFETY
  • Risk and Safety Statements
Symbol(GHS) 
GHS02
Signal word  Danger
Hazard statements  H261
Precautionary statements  P223-P280a-P370+P378c-P402+P404-P501a-P231+P232-P422
Hazard Codes  F
Risk Statements  14-14/15
Safety Statements  7/8-43
RIDADR  UN 2624 4.3/PG 2
WGK Germany  3
TSCA  Yes
HazardClass  4.3
PackingGroup  II

MAGNESIUM SILICIDE price More Price(9)

Manufacturer Product number Product description CAS number Packaging Price Updated Buy
Sigma-Aldrich 752630 Magnesium silicide pieces, 99.7% trace metals basis 22831-39-6 5g $43.4 2018-11-20 Buy
Sigma-Aldrich 343196 Magnesium silicide ≥99% trace metals basis, 20mesh 22831-39-6 25g $81 2018-11-20 Buy
Alfa Aesar 012837 Magnesium silicide, 99.5% (metals basis) 22831-39-6 10g $29.3 2018-11-16 Buy
Alfa Aesar 012837 Magnesium silicide, 99.5% (metals basis) 22831-39-6 50g $120 2018-11-16 Buy
Strem Chemicals 93-1293 Magnesium silicide (99.5%-Mg) (C < 1%) 22831-39-6 10g $29 2018-11-13 Buy

MAGNESIUM SILICIDE Chemical Properties,Uses,Production

Description

Magnesium silicide has the molecular formula of Mg2Si and the molecular weight of 76.6955 g/mol. Its density is 1.998 g/cc and its melting point is 1102°C. It is a black powder.
Mg2Si crystallizes in a cubic CaF2 (fluorspar)-type lattice with a = 4.49 ? . The centers of this lattice are analogous to that of diamond. Each Si atom forms four covalent sp3 bonds. The Mg subshells are only half-filled. There is no bonding between the two Mg atom sites. The distance between the Mg and Si atoms is 2.77 ? . Bonding in this compound is essentially covalent.

Chemical Properties

blue crystals

Chemical Properties

Magnesium silicide is a slate blue crystalline solid.

Physical properties

Magnesium silicide is unstable in air and reacts with moisture to form silane. When magnesium silicide is placed into aqueous HCl, the gas silane, SiH4, is produced. This gas is the silicon analogue of methane, CH4, but is more reactive. Silane is pyrophoric, that is due to the presence of O2 in the air, i.e. it spontaneously combusts in air. These reactions are typical of a Group-2 silicide. Mg2Si reacts similarly with sulfuric acid. As a powder, magnesium silicide is dark blue or slightly purple in color.

Uses

In semiconductor research. Has been used to build Mg-Si rectifiers.

General Description

A colorless crystalline solid. Insoluble in water and denser than water. Contact may irritate skin, eyes and mucous membranes. May be toxic by ingestion.

Air & Water Reactions

Contact with moisture under acidic condition generates silanes that ignite in air. Insoluble in water.

Reactivity Profile

MAGNESIUM SILICIDE is a reducing agent. May react vigorously with oxidizing materials.

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.

Fire Hazard

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.

Potential Exposure

Magnesium silicide is used in the semiconductor industry and to produce certain aluminum alloys

Shipping

UN2624 Magnesium silicide, Hazard Class: 4.3; Labels: 4.3-Dangerous when wet materia

Incompatibilities

Possibly pyrophoric, especially in moist air. Pyrophoric; mixtures with air are spontaneously explosive. A strong reducing agent. Incompatible with oxidizers (chlorates, nitrates, peroxides, permanganates, perchlorates, chlorine, bromine, fluorine, etc.); contact may cause fires or explosions. Keep away from alkaline materials, mineral acids, strong acids, strong bases. Reacts with water; releasing explosive hydrogen gas and may also release selfigniting toxic silane gas

MAGNESIUM SILICIDE Preparation Products And Raw materials

Raw materials

Preparation Products


MAGNESIUM SILICIDE Suppliers

Global( 38)Suppliers
Supplier Tel Fax Email Country ProdList Advantage
career henan chemical co
+86-371-86658258
sales@coreychem.com CHINA 30001 58
Hubei xin bonus chemical co. LTD
86-13657291602
027-59338440 sales@guangaobio.com CHINA 23049 58
J & K SCIENTIFIC LTD. 400-666-7788 +86-10-82848833
86-10-82849933 jkinfo@jkchemical.com;market6@jkchemical.com China 96815 76
Meryer (Shanghai) Chemical Technology Co., Ltd. +86-(0)21-61259100(Shanghai) +86-(0)755-86170099(ShenZhen) +86-(0)10-62670440(Beijing)
+86-(0)21-61259102(Shanghai) +86-(0)755-86170066(ShenZhen) +86-(0)10-88580358(Beijing) sh@meryer.com China 40269 62
Alfa Aesar 400-610-6006; 021-67582000
021-67582001/03/05 saleschina@alfa-asia.com China 30163 84
Energy Chemical 021-58432009 / 400-005-6266
021-58436166-800 info@energy-chemical.com China 44025 61
Adamas Reagent, Ltd. 400-600-9262
bxy@titansci.com China 13919 59
Chemfun Medical Technology(Shanghai) Co., Ltd. 021-67220633 & 021-37212706
+86-21-67220638 chemfun@chemfun.net China 21812 59
Sinopharm Chemical Reagent Co,Ltd. 86-21-63210123
86-21-63290778 86-21-63218885 sj_scrc@sinopharm.com China 9847 79
Wuxi Zhongkun Biochemical Technology Co., Ltd. 051085629785,051085625359,QQ974229108,QQ1373125882
051085625359 sales@reading-chemicals.com China 19214 58

View Lastest Price from MAGNESIUM SILICIDE manufacturers

Image Release date Product Price Min. Order Purity Supply Ability Manufacturer
2019-08-30 MAGNESIUM SILICIDE
22831-39-6
US $1.00 / KG 1KG 85.0-99.8% 200kg career henan chemical co

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