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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

Fórmula empírica (notación de Hill):
Se
Número de CAS:
7782-49-2
Peso molecular:
78.96
Número CE:
231-957-4
Número MDL:
MFCD00134090
Código UNSPSC:
12141910
ID de la sustancia en PubChem:
24852251
NACRES:
NA.23

descripción

gray

Ensayo

≥99.999% trace metals basis

Formulario

pellets

resistividad

1.2 μΩ-cm, 0°C

tamaño de partícula

<5 mm

bp

684.9 °C (lit.)

mp

217 °C (lit.)

densidad

4.81 g/mL at 25 °C (lit.)

cadena SMILES

[Se]

InChI

1S/Se

Clave InChI

BUGBHKTXTAQXES-UHFFFAOYSA-N

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Descripción general

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.

Aplicación

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

Pictogramas

Skull and crossbonesHealth hazard
GHS06,GHS08

Palabra de señalización

Danger

Frases de peligro

H301 + H331,H373,H413

Clasificaciones de peligro

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

Código de clase de almacenamiento

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

Clase de riesgo para el agua (WGK)

WGK 2

Punto de inflamabilidad (°F)

Not applicable

Punto de inflamabilidad (°C)

Not applicable

Equipo de protección personal

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

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Certificados de análisis (COA)

Lot/Batch Number
MKCW4734
MKCV8096
MKCV1972
MKCN2409
MKCJ9981

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Waleed Alhazzani et al.
Critical care medicine, 41(6), 1555-1564 (2013-04-17)
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
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
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
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
Mark Denham et al.
Stem cells (Dayton, Ohio), 33(6), 1759-1770 (2015-03-11)
The caudal neural plate is a distinct region of the embryo that gives rise to major progenitor lineages of the developing central and peripheral nervous system, including neural crest and floor plate cells. We show that dual inhibition of the
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