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Silicon CAS NO.7440-21-3

Min.Order Quantity:: 1 Kilogram

Purity:: 98%

Port:: China Main Port

Payment Terms:: L/C,D/A,D/P,T/T,MoneyGram,Other

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Product Details

Keywords

Silicon
7440-21-3
H4Si

Quick Details

ProName: Silicon
CasNo: 7440-21-3
Molecular Formula: H4Si
Appearance: powder
Application: 7440-21-3
DeliveryTime: within 3-7 days
PackAge: as requested
Port: China Main Port
ProductionCapacity: 300 Kilogram/Month
Purity: 98%
Storage: store in cool, dry place
Transportation: by sea or by air
LimitNum: 1 Kilogram

Superiority

silicon basic information

product name:	silicon
synonyms:	simp ax05;simp ax10;simp ax20;silicon atomic absorption single element standard;silicon atomic absorption standard;silicon atomic absorption standard solution;silicon atomic spectroscopy standard;silicon icp/dcp standard
cas:	7440-21-3
mf:	h4si
mw:	32.12
einecs:	231-130-8
product categories:	inorganics;siliconnanomaterials;14: si;nanomaterials;nanoparticles: metals and metal alloysmetal and ceramic science;nanopowders and nanoparticle dispersions;pure elementsmetal and ceramic science;electronic chemicals;electronic materials;materials science;micro/nanoelectronics;metal and ceramic science;metals;metal or element;fine chemical
mol file:	7440-21-3.mol

silicon chemical properties

melting point	1410 °c(lit.)
boiling point	2355 °c(lit.)
density	2.33 g/ml at 25 °c(lit.)
storage temp.	flammables area
form	powder
water solubility	insoluble
merck	13,8565
stability:	stable. fine powder is highly flammable. incompatible with oxidizing agents, bases, carbonates, alkali metals, lead and aluminium oxides, halogens, carbides, formic acid.
cas database reference	7440-21-3(cas database reference)
nist chemistry reference	silicon(7440-21-3)
epa substance registry system	silicon(7440-21-3)

safety information

hazard codes	t,f
risk statements	11
safety statements	26-36/37-45-7/9-33-16-36
ridadr	un 2922 8/pg 2
wgk germany	2
rtecs	vw0400000
tsca	yes
hazardclass	4.1
packinggroup	iii
hazardous substances data	7440-21-3(hazardous substances data)

msds information

provider	language
sigmaaldrich	english
acros	english
alfa	english

silicon usage and synthesis

chemical properties	grey lustrous solid or grey powder
general description	a dark brown powder. insoluble in water and denser than water. burns readily when exposed to heat or flames, and may be difficult to extinguish. water may not be effective in extinguishing flames. used to make computer microchips.
air & water reactions	highly flammable. insoluble in water. a significant dust explosion hazard.
reactivity profile	silicon is a reducing agent. ignites in fluorine gas at ordinary temperatures [mellor 2:11-13 1946-47]. burns spontaneously in gaseous chlorine. a mixture of silicon, aluminum, and lead oxide explodes when heated [mellor 7:657 1946-47]. when heated with an alkali carbonate, a vigorous reaction attended by incandescence occurs [mellor 6:164 1946-47]. reacts violently with silver fluoride [mellor 3:389 1946-47]. reacts with sodium-potassium alloy to form sodium silicide, which is spontaneously flammable in air [mellor 2 supp. 2:564 1961].
health hazard	oxides from metallic fires are a severe health hazard. inhalation or contact with substance or decomposition products may cause severe injury or death. fire may produce irritating, corrosive and/or toxic gases. runoff from fire control or dilution water may cause pollution.
fire hazard	may react violently or explosively on contact with water. some are transported in flammable liquids. may be ignited by friction, heat, sparks or flames. some of these materials will burn with intense heat. dusts or fumes may form explosive mixtures in air. containers may explode when heated. may re-ignite after fire is extinguished.

silicon preparation products and raw materials

preparation products	chlorotrimethylsilane-->silicon dioxide-->dichlorodimethylsilane-->trichlorosilane-->silicon tetrahydride-->methyltrichlorosilane-->phenyltrichlorosilane-->silicon nitride-->1,2-diphenylhydrazine-->dichlorodiphenylsilane-->dichlorosilane-->dichloromethylsilane-->3-glycidoxypropyltrimethoxysilane
raw materials	hydrogen-->cuprous chloride-->graphite-->silicon dioxide-->calcium carbonate-->argon-->metallurgical coke-->trichlorosilane-->sg cat sand

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