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Merck

204307

Selenium

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

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A propos de cet article

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

Principaux documents

Voir toute la documentation
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description

gray

assay

≥99.999% trace metals basis

form

pellets

reaction suitability

core: selenium

resistivity

1.2 μΩ-cm, 0°C

particle size

<5 mm

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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Catégories apparentées

General description

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.

pictograms

Skull and crossbonesHealth hazard
GHS06,GHS08

signalword

Danger

Hazard Classifications

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

Classe de stockage

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

wgk

WGK 2

flash_point_f

Not applicable

flash_point_c

Not applicable

ppe

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

Faites votre choix parmi les versions les plus récentes :

Certificats d'analyse (COA)

Lot/Batch Number
MKCW4734
MKCV8096
MKCV1972
MKCN2409
MKCJ9981

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Consulter la Bibliothèque de documents

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
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
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
Brian D Laird et al.
The Journal of nutrition, 143(6), 923-930 (2013-04-26)
Elevated concentrations of mercury (Hg) are commonly found in the traditional foods, including fish and marine mammals, of Inuit living in Canada's Arctic. As a result, Inuit often have higher dietary Hg intake and elevated Hg blood concentrations. However, these
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