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Product No: AA0478

Silicon, powder, crystalline, -325 mesh, 99.5%(metals basis)

Name: Silicon
Brand: Chempure

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CAS Number

7440-21-3

Molecular Weight

28.09

Formula

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About this item

IUPAC name	silicon
canonical smiles	[Si]
inchi	InChI=1S/Si
inchi key	XUIMIQQOPSSXEZ-UHFFFAOYSA-N
molecular formula	Si
synonyms	7440-21-3 Si Silicon Silicone Silicon powder
Compound Description	Silicon powder, amorphous appears as 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. Silicon atom is a carbon group element atom, a nonmetal atom and a metalloid atom. Silicon is under investigation in clinical trial NCT00103246 . Silicon is a mineral with formula of Si. The corresponding IMA number is IMA1982-099. The IMA symbol is Si. A trace element that constitutes about 27.6% of the earth's crust in the form of SILICON DIOXIDE. It does not occur free in nature. Silicon has the atomic symbol Si, atomic number 14, and atomic weight [28.084; 28.086].

Computed Properties

Molecular Weight:	28.085 g/mol
Hydrogen Bond Donor Count:	0
Hydrogen Bond Acceptor Count:	0
Rotatable Bond Count:	0
Exact Mass:	27.976926534 g/mol
Monoisotopic Mass:	27.976926534 g/mol
Topological Polar Surface Area:	0 Å²
Heavy Atom Count:	1
Formal Charge:	0
Complexity:	0
Isotope Atom Count:	0
Defined Atom Stereocenter Count:	0
Undefined Atom Stereocenter Count:	0
Defined Bond Stereocenter Count:	0
Undefined Bond Stereocenter Count:	0
Covalently-Bonded Unit Count:	1
Compound Is Canonicalized:	Yes

hazard signal	Warning
hazard classes and categories	Not Classified Flammable solids - Category 2 Serious eye damage/eye irritation - Category 2B Flammable - 3rd degree
precautionary statement codes	P210, P240, P241, P264+P265, P280, P305+P351+P338, P337+P317, and P370+P378
hazard statements	Not Classified Reported as not meeting GHS hazard criteria by 3165 of 3284 companies (only ~ 3.6% companies provided GHS information). For more detailed information, please visit ECHA C&L website. Not Classified Reported as not meeting GHS hazard criteria by 1 of 1 companies. For more detailed information, please visit ECHA C&L website. Not Classified Reported as not meeting GHS hazard criteria by 1 of 1 companies. For more detailed information, please visit ECHA C&L website. H228: Flammable solid [Danger Flammable solids] H320: Causes eye irritation [Warning Serious eye damage/eye irritation]
hazards summary	There is little evidence that silicon dust can cause adverse pulmonary effects when exposures are kept under reasonable control. Documentation and TLV withdrawn in 2006 because of insufficient data.

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About this item

Documentation

Certificate of Analysis

Lot Number

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CAS #

*This document is like a lab demo—an example Certificate of Analysis (COA) that showcases what a COA looks like but may not match the latest batch in all its glory. Think of it as a chemistry experiment: close, but not quite the final reaction!

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About this item

IUPAC name	silicon
canonical smiles	[Si]
inchi	InChI=1S/Si
inchi key	XUIMIQQOPSSXEZ-UHFFFAOYSA-N
molecular formula	Si
synonyms	7440-21-3 Si Silicon Silicone Silicon powder
Compound Description	Silicon powder, amorphous appears as 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. Silicon atom is a carbon group element atom, a nonmetal atom and a metalloid atom. Silicon is under investigation in clinical trial NCT00103246 . Silicon is a mineral with formula of Si. The corresponding IMA number is IMA1982-099. The IMA symbol is Si. A trace element that constitutes about 27.6% of the earth's crust in the form of SILICON DIOXIDE. It does not occur free in nature. Silicon has the atomic symbol Si, atomic number 14, and atomic weight [28.084; 28.086].

Computed Properties

Molecular Weight:	28.085 g/mol
Hydrogen Bond Donor Count:	0
Hydrogen Bond Acceptor Count:	0
Rotatable Bond Count:	0
Exact Mass:	27.976926534 g/mol
Monoisotopic Mass:	27.976926534 g/mol
Topological Polar Surface Area:	0 Å²
Heavy Atom Count:	1
Formal Charge:	0
Complexity:	0
Isotope Atom Count:	0
Defined Atom Stereocenter Count:	0
Undefined Atom Stereocenter Count:	0
Defined Bond Stereocenter Count:	0
Undefined Bond Stereocenter Count:	0
Covalently-Bonded Unit Count:	1
Compound Is Canonicalized:	Yes

hazard signal	Warning
hazard classes and categories	Not Classified Flammable solids - Category 2 Serious eye damage/eye irritation - Category 2B Flammable - 3rd degree
precautionary statement codes	P210, P240, P241, P264+P265, P280, P305+P351+P338, P337+P317, and P370+P378
hazard statements	Not Classified Reported as not meeting GHS hazard criteria by 3165 of 3284 companies (only ~ 3.6% companies provided GHS information). For more detailed information, please visit ECHA C&L website. Not Classified Reported as not meeting GHS hazard criteria by 1 of 1 companies. For more detailed information, please visit ECHA C&L website. Not Classified Reported as not meeting GHS hazard criteria by 1 of 1 companies. For more detailed information, please visit ECHA C&L website. H228: Flammable solid [Danger Flammable solids] H320: Causes eye irritation [Warning Serious eye damage/eye irritation]
hazards summary	There is little evidence that silicon dust can cause adverse pulmonary effects when exposures are kept under reasonable control. Documentation and TLV withdrawn in 2006 because of insufficient data.

Product No: AA0478

Silicon, powder, crystalline, -325 mesh, 99.5%(metals basis)

Product No: AA0478

About this item

NAME AND IDENTIFIERS

CHEMICAL AND PHYSICAL PROPERTIES

SAFETY AND HAZARDS

About this item

Documentation

Certificate of Analysis

Require a Sample Certificate of Analysis (COA) ?

Reviews

Product No: AA0478

About this item

NAME AND IDENTIFIERS

CHEMICAL AND PHYSICAL PROPERTIES

SAFETY AND HAZARDS

Require a Sample Certificate of Analysis (COA) ?