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204307

Sigma-Aldrich

Selenium

pellets, <5 mm particle size, ≥99.999% trace metals basis

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About This Item

Formule empirique (notation de Hill):
Se
Numéro CAS:
7782-49-2
Poids moléculaire :
78.96
Numéro CE :
231-957-4
Numéro MDL:
MFCD00134090
Code UNSPSC :
12141910
ID de substance PubChem :
24852251
Nomenclature NACRES :
NA.23

Description

gray

Niveau de qualité

100

Pureté

≥99.999% trace metals basis

Forme

pellets

Résistivité

1.2 μΩ-cm, 0°C

Taille des particules

<5 mm

Point d'ébullition

684.9 °C (lit.)

Pf

217 °C (lit.)

Densité

4.81 g/mL at 25 °C (lit.)

Chaîne SMILES 

[Se]

InChI

1S/Se

Clé InChI

BUGBHKTXTAQXES-UHFFFAOYSA-N

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Description générale

Selenium is a non-metallic p-type semiconductor and is commercially produced as a by-product in refining sulfide-bearing copper minerals. It has good photovoltaic and photoconductive properties and is extensively used in the electronics such as solar cells, light meters, and, photocells. It also finds application in the field of ceramics, pigments, metallurgy, agriculture, glasses, and lubricants.

Application

Selenium has been used as a starting material tosynthesize selenium nanoparticles.

Pictogrammes

Skull and crossbonesHealth hazard
GHS06,GHS08

Mention d'avertissement

Danger

Mentions de danger

H301 + H331,H373,H413

Classification des risques

Acute Tox. 3 Inhalation - Acute Tox. 3 Oral - Aquatic Chronic 4 - STOT RE 2

Code de la classe de stockage

6.1C - Combustible acute toxic Cat.3 / toxic compounds or compounds which causing chronic effects

Classe de danger pour l'eau (WGK)

WGK 2

Point d'éclair (°F)

Not applicable

Point d'éclair (°C)

Not applicable

Équipement de protection individuelle

Eyeshields, Faceshields, Gloves, type P2 (EN 143) respirator cartridges

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Certificats d'analyse (COA)

Lot/Batch Number
MKCV8096
MKCV1972
MKCN2409
MKCJ9981
MKCF9269

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Claire M Weekley et al.
Nutrients, 5(5), 1734-1756 (2013-05-24)
Determining the speciation of selenium in vivo is crucial to understanding the biological activity of this essential element, which is a popular dietary supplement due to its anti-cancer properties. Hyphenated techniques that combine separation and detection methods are traditionally and
Waleed Alhazzani et al.
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Patients with sepsis syndrome commonly have low serum selenium levels. Several randomized controlled trials have examined the efficacy of selenium supplementation on mortality in patients with sepsis. To determine the efficacy and safety of high-dose selenium supplementation compared to placebo
Daniel D Karp et al.
Journal of clinical oncology : official journal of the American Society of Clinical Oncology, 31(33), 4179-4187 (2013-09-05)
Selenium has been reported to have chemopreventive benefits in lung cancer. We conducted a double-blind, placebo-controlled trial to evaluate the incidence of second primary tumors (SPTs) in patients with resected non-small-cell lung cancer (NSCLC) receiving selenium supplementation. Patients with completely
Kai-Oliver Feldmann et al.
Chemistry (Weinheim an der Bergstrasse, Germany), 21(27), 9697-9712 (2015-05-12)
Although a fairly large number of binary group 15/16 element cations have been reported, no example involving phosphorus in combination with a group 16 element has been synthesized and characterized to date. In this contribution is reported the synthesis and structural characterization
Matthew Loxham et al.
Toxicological sciences : an official journal of the Society of Toxicology, 145(1), 98-107 (2015-02-13)
We have previously shown that underground railway particulate matter (PM) is rich in iron and other transition metals across coarse (PM10-2.5), fine (PM2.5), and quasi-ultrafine (PM0.18) fractions and is able to generate reactive oxygen species (ROS). However, there is little
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