Direkt zum Inhalt
Merck
Alle Fotos(5)

Key Documents

Weitere Dokumente

209651

Sigma-Aldrich

Selen

powder, −100 mesh, ≥99.5% trace metals basis

Anmeldenzur Ansicht organisationsspezifischer und vertraglich vereinbarter Preise
Alle Fotos(5)

About This Item

Empirische Formel (Hill-System):
Se
CAS-Nummer:
7782-49-2
Molekulargewicht:
78.96
EG-Nummer:
231-957-4
MDL-Nummer:
MFCD00134090
UNSPSC-Code:
12161600
PubChem Substanz-ID:
24852584
NACRES:
NA.23

Beschreibung

gray

Assay

≥99.5% trace metals basis

Form

powder

Eignung der Reaktion

reagent type: catalyst
core: selenium

Widerstandsfähigkeit

1.2 μΩ-cm, 0°C

Partikelgröße

−100 mesh

bp

684.9 °C (lit.)

mp (Schmelzpunkt)

217 °C (lit.)

Dichte

4.81 g/mL at 25 °C (lit.)

SMILES String

[Se]

InChI

1S/Se

InChIKey

BUGBHKTXTAQXES-UHFFFAOYSA-N

Suchen Sie nach ähnlichen Produkten? Aufrufen Leitfaden zum Produktvergleich

Allgemeine Beschreibung

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 that may appear reddish in color. 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, and ensuring the powder is fine and easy-to-handle.

Anwendung

Se 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.

Piktogramme

Skull and crossbonesHealth hazard
GHS06,GHS08

Signalwort

Danger

Gefahreneinstufungen

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

Lagerklassenschlüssel

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

WGK

WGK 2

Flammpunkt (°F)

Not applicable

Flammpunkt (°C)

Not applicable

Persönliche Schutzausrüstung

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

Analysenzertifikate (COA)

Suchen Sie nach Analysenzertifikate (COA), indem Sie die Lot-/Chargennummer des Produkts eingeben. Lot- und Chargennummern sind auf dem Produktetikett hinter den Wörtern ‘Lot’ oder ‘Batch’ (Lot oder Charge) zu finden.

Besitzen Sie dieses Produkt bereits?

In der Dokumentenbibliothek finden Sie die Dokumentation zu den Produkten, die Sie kürzlich erworben haben.

Die Dokumentenbibliothek aufrufen

Kunden haben sich ebenfalls angesehen

Slide 1 of 9

1 of 9

Selenium black 99+ for analysis EMSURE®

Supelco

1.07714

Selenium black 99+

Tellur powder, −200 mesh, 99.8% trace metals basis

Sigma-Aldrich

266418

Tellur

Selendioxid ReagentPlus®, powder, 99.8% trace metals basis

Sigma-Aldrich

213365

Selendioxid

Cadmiumoxid ≥99.99% trace metals basis

Sigma-Aldrich

202894

Cadmiumoxid

Cadmiumoxid powder, 99.5% trace metals basis

Sigma-Aldrich

244783

Cadmiumoxid

Trioctylphosphin technical grade, 90%

Sigma-Aldrich

117854

Trioctylphosphin

Selendioxid reagent grade, powder, 98%

Sigma-Aldrich

325473

Selendioxid

Tellur powder, −30 mesh, 99.997% trace metals basis

Sigma-Aldrich

264865

Tellur

Schwefel powder, 99.98% trace metals basis

Sigma-Aldrich

414980

Schwefel

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
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
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
Alle zugehörigen Dokumente anzeigen

Unser Team von Wissenschaftlern verfügt über Erfahrung in allen Forschungsbereichen einschließlich Life Science, Materialwissenschaften, chemischer Synthese, Chromatographie, Analytik und vielen mehr..

Setzen Sie sich mit dem technischen Dienst in Verbindung.