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229865

Sigma-Aldrich

Selenium

powder, −100 mesh, 99.99% trace metals basis

Sinônimo(s):

Se powder, Selenium metal powder

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About This Item

Fórmula empírica (Notação de Hill):
Se
Número CAS:
7782-49-2
Peso molecular:
78.96
Número CE:
231-957-4
Número MDL:
MFCD00134090
Código UNSPSC:
12141910
ID de substância PubChem:
24853754
NACRES:
NA.23

descrição

gray

Nível de qualidade

100

Ensaio

99.99% trace metals basis

Formulário

powder

resistividade

1.2 μΩ-cm, 0°C

tamanho de partícula

−100 mesh

p.e.

684.9 °C (lit.)

pf

217 °C (lit.)

densidade

4.81 g/mL at 25 °C (lit.)

cadeia de caracteres SMILES

[Se]

InChI

1S/Se

chave InChI

BUGBHKTXTAQXES-UHFFFAOYSA-N

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Descrição geral

Selenium powder is a fine, powdery substance made up of small particles of the element selenium, often produced by the reduction of selenium oxide. Selenium powder is grey or silvered-colored and may have a metallic sheen. This product is passed through a 100-mesh sieve, indicating that the particles are small and have a diameter of around 150 micrometers or less. In addition, this product is highly pure and only has a very small concentration of impurities, making it suitable for research applications, chemical testing, and the production of electronic components.

Aplicação

Selenium was a component in the Dulbecco′s Modified Eagle Medium, used for the cell culture of alpha mouse liver (AML)-12 hepatocyte cell line. Se was also employed in a water based synthesis of glutathione-capped cadmium selenide quantum dots (GSH-CdSe QDs). 3Se is used in the synthesis of CdSe, which is consequetively used to modulate the photoresponse of quantum dot solar cells by varying the size and shape of semiconductor nanostructures.

Características e benefícios

Our 99.99% pure selenium powder with particle size less than 150 microns is useful in electronics, chemical testing, and research where purity matters most.
✔ Consistent quality
✔ Ultra high purity
✔ Available at scale: bulk and pilot scale

Pictogramas

Skull and crossbonesHealth hazard
GHS06,GHS08

Palavra indicadora

Danger

Frases de perigo

H301 + H331,H373,H413

Classificações de perigo

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

Código de classe de armazenamento

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

Classe de risco de água (WGK)

WGK 2

Ponto de fulgor (°F)

Not applicable

Ponto de fulgor (°C)

Not applicable

Equipamento de proteção individual

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

Escolha uma das versões mais recentes:

Certificados de análise (COA)

Lot/Batch Number
MKCR0011
MKCQ7648
MKCP9374
MKCP9319
MKCP1334

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Se precisar de uma versão específica, você pode procurar um certificado específico pelo número do lote ou da remessa.

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István Robel et al.
Journal of the American Chemical Society, 128(7), 2385-2393 (2006-02-16)
By using bifunctional surface modifiers (SH-R-COOH), CdSe quantum dots (QDs) have been assembled onto mesoscopic TiO(2) films. Upon visible light excitation, CdSe QDs inject electrons into TiO(2) nanocrystallites. Femtosecond transient absorption as well as emission quenching experiments confirm the injection
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
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
Songtao Li et al.
Biochimica et biophysica acta, 1841(1), 22-33 (2013-09-24)
Saturated fatty acids (SFAs) induce hepatocyte cell death, wherein oxidative stress is mechanistically involved. Nuclear factor (erythroid-derived 2)-like 2 (Nrf2) is a master transcriptional regulator of cellular antioxidant defense enzymes. Therefore, Nrf2 activation is regarded as an effective strategy against
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
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