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Selenium Metal

CAS #: 7782-49-2

Linear Formula:

MDL Number

MFCD00134090

EC No.:

231-957-4

Chemical Structure

ORDER

Product	Product Code	ORDER	SAFETY DATA	Technical data
(2N) 99% Selenium Metal	SE-E-02	Pricing Add to cart only	SDS >	Data Sheet >
(3N) 99.9% Selenium Metal	SE-E-03	Pricing Add to cart only	SDS >	Data Sheet >
(4N) 99.99% Selenium Metal	SE-E-04	Pricing Add to cart only	SDS >	Data Sheet >
(5N) 99.999% Selenium Metal	SE-E-05	Pricing Add to cart only	SDS >	Data Sheet >
(6N) 99.9999% Selenium Metal	SE-E-06	Pricing Add to cart only	SDS >	Data Sheet >
(7N) 99.99999% Selenium Metal	SE-E-07	Pricing Add to cart only	SDS >	Data Sheet >

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Selenium Metal Properties (Theoretical)

Molecular Weight	78.96
Appearance	Gray to black solid
Melting Point	217 °C
Boiling Point	684.9 °C
Density	4.79 g/cm³
Solubility in H2O	N/A
Poisson's Ratio	0.33
Young's Modulus	10 GPa
Vickers Hardness	N/A
Tensile Strength	N/A
Thermal Conductivity	0.00519 W/cm/K @ 298.2 K
Thermal Expansion	(25 °C) (amorphous) 37 µm·m^-1·K^-1
Electrical Resistivity	106 microhm-cm @ 0 °C
Electronegativity	2.4 Paulings
Specific Heat	0.767 Cal/g/K @ 25 °C
Heat of Fusion	1.22 Cal/gm mole
Heat of Vaporization	3.34 K-cal/gm atom at 684.9 °C

Selenium Metal Health & Safety Information

Signal Word	Danger
Hazard Statements	H301+H331-H373-
Hazard Codes	T
Precautionary Statements	P260-P261-P304+P340-P405-P403+P233-P501
Flash Point	Not applicable
Risk Codes	N/A
Safety Statements	N/A
RTECS Number	VS7700000
Transport Information	UN 3077 9 / PGIII
WGK Germany	2
GHS Pictogram	Image , Image

About Selenium Metal

Selenium Metal is available as disc, granules, ingot, pellets, pieces, powder , rod, wire, and sputtering target. Ultra high purity and high purity forms also include metal powder, submicron powder and nanoscale, quantum dots, targets for thin film deposition, pellets for evaporation and single crystal or polycrystalline forms. Elements can also be introduced into alloys or other systems as fluorides, oxides or chlorides or as solutions. Selenium metal is generally immediately available in most volumes. American Elements produces to many standard grades when applicable, including Mil Spec (military grade); ACS, Reagent and Technical Grade; Food, Agricultural and Pharmaceutical Grade; Optical Grade, USP and EP/BP (European Pharmacopoeia/British Pharmacopoeia) and follows applicable ASTM testing standards. Typical and custom packaging is available. Additional technical, research and safety (MSDS) information is available as is a Reference Calculator for converting relevant units of measurement.

Synonyms

N/A

Chemical Identifiers

Linear Formula	Se
Pubchem CID	6326970
MDL Number	MFCD00134090
EC No.	231-957-4
Beilstein/Reaxys No.	N/A
SMILES	[Se]
InchI Identifier	InChI=1S/Se
InchI Key	BUGBHKTXTAQXES-UHFFFAOYSA-N
Chemical Formula
Molecular Weight
Standard InchI
Appearance
Melting Point
Boiling Point
Density

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Packaging Specifications

Typical bulk packaging includes palletized plastic 5 gallon/25 kg. pails, fiber and steel drums to 1 ton super sacks in full container (FCL) or truck load (T/L) quantities. Research and sample quantities and hygroscopic, oxidizing or other air sensitive materials may be packaged under argon or vacuum. Shipping documentation includes a Certificate of Analysis and Safety Data Sheet (SDS). Solutions are packaged in polypropylene, plastic or glass jars up to palletized 440 gallon liquid totes, and 36,000 lb. tanker trucks.

Related Elements

See more Selenium products. Selenium (atomic symbol: Se, atomic number: 34) is a Block P, Group 16, Period 4 element with an atomic radius of 78.96. The number of electrons in each of Selenium's shells is 2, 8, 18, 6 and its electron configuration is [Ar] 3d¹⁰ 4s² 4p⁴. The selenium atom has a radius of 120 pm and a Van der Waals radius of 190 pm. Selenium is a non-metal with several allotropes: a black, vitreous form with an irregular crystal structure three red-colored forms with monoclinic crystal structures and a gray form with a hexagonal crystal structure, the most stable and dense form of the element. One of the most common uses for selenium is in glass production the red tint that it lends to glass neutralizes green or yellow tints from impurities in the glass materials. Selenium was discovered and first isolated by Jöns Jakob Berzelius and Johann Gottlieb Gahn in 1817. The origin of the name Selenium comes from the Greek word "Selênê," meaning moon.