229865

Sigma-Aldrich

Selenium

powder, −100 mesh, 99.99% trace metals basis

Empirical Formula (Hill Notation):
Se
CAS Number:
Molecular Weight:
78.96
EC Number:
MDL number:
PubChem Substance ID:
NACRES:
NA.23
Pricing and availability is not currently available.

Quality Level

description

gray

assay

99.99% trace metals basis

form

powder

resistivity

1.2 μΩ-cm, 0°C

particle size

−100 mesh

bp

684.9 °C (lit.)

mp

217 °C (lit.)

density

4.81 g/mL at 25 °C (lit.)

SMILES string

Se

InChI

1S/Se

InChI key

BUGBHKTXTAQXES-UHFFFAOYSA-N

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Application

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.

Packaging

5, 20, 100 g in poly bottle

Pictograms

Skull and crossbonesHealth hazard

Signal Word

Danger

Hazard Statements

Personal Protective Equipment

dust mask type N95 (US),Eyeshields,Gloves

Hazard Codes

T

Risk Statement

23/25-33-53

Safety Statement

20/21-28-45-61

RIDADR

UN3288 - class 6.1 - PG 3 - EHS - RQ - Toxic solid, inorganic, n.o.s., HI: all

WGK Germany

WGK 2

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

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...
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...
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...
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