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266418

Sigma-Aldrich

Tellur

powder, −200 mesh, 99.8% trace metals basis

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€ 63,80
100 G
€ 186,00
500 G
€ 765,00

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25 G
€ 63,80
100 G
€ 186,00
500 G
€ 765,00

About This Item

Empirische Formel (Hill-System):
Te
CAS-Nummer:
13494-80-9
Molekulargewicht:
127.60
EG-Nummer:
236-813-4
MDL-Nummer:
MFCD00134062
UNSPSC-Code:
12141913
PubChem Substanz-ID:
24856140
NACRES:
NA.23

€ 63,80

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Qualitätsniveau

100

Assay

99.8% trace metals basis

Form

powder

Widerstandsfähigkeit

5.8-33 μΩ-cm, 20°C

Partikelgröße

−200 mesh

bp

990 °C (lit.)

mp (Schmelzpunkt)

450 °C (lit.)

Dichte

6.24 g/mL at 25 °C (lit.)

SMILES String

[Te]

InChI

1S/Te

InChIKey

PORWMNRCUJJQNO-UHFFFAOYSA-N

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Allgemeine Beschreibung

Tellurium is anon-radioactive and heaviest member of the chalcogen family. It has a widerange of oxidation states, from -2 to +6. It is widely used in the fields ofmetallurgy and electronics.

Anwendung

In combination with potassium hydroxide, mediates the quantitative pinacolization of aromatic carbonyl compounds.[1]
Tellurium can be used as a precursor to prepare:
  • Tellurium-based nanomaterials for semiconductor application, such as CdTe nanoparticles via solvothermal synthesis.
  • Quantum dot solutions for fluorometric determination of bioactive compounds.
  • Thermoelectricmaterials, such as Cu4Mn2Te4 by the melting-quenching-SPS method.

Piktogramme

Health hazardExclamation mark
GHS08,GHS07

Signalwort

Danger

Gefahreneinstufungen

Acute Tox. 4 Inhalation - Aquatic Chronic 4 - Lact. - Repr. 1B - Skin Sens. 1B

Lagerklassenschlüssel

6.1D - Non-combustible acute toxic Cat.3 / toxic hazardous materials or hazardous materials 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

Zulassungslistungen

Zulassungslistungen werden hauptsächlich für chemische Produkte erstellt. Für nicht-chemische Produkte können hier nur begrenzte Angaben gemacht werden. Kein Eintrag bedeutet, dass keine der Komponenten gelistet ist. Es liegt in der Verantwortung des Benutzers, die sichere und legale Verwendung des Produkts zu gewährleisten.

EU REACH Annex XVII (Restriction List)

CAS No.

Hier finden Sie alle aktuellen Versionen:

Analysenzertifikate (COA)

Lot/Batch Number
MKCW7344
MKCT2800
MKCQ5416
MKCQ1927
MKCM6793

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Tellurium lump, 25 mm max. lump size, weight 200 g, purity 99.95%

GF02899828

Tellurium

Tellurtetrachlorid 99%

Sigma-Aldrich

205338

Tellurtetrachlorid

Bismut powder, −100 mesh, 99% trace metals basis

Sigma-Aldrich

265462

Bismut

Tellurdioxid ≥97.0%

Sigma-Aldrich

86370

Tellurdioxid

Tellurium dioxide 99.5+

Sigma-Aldrich

1.12356

Tellurium dioxide

Zinktellurid −100 mesh, 99.99% trace metals basis

Sigma-Aldrich

254320

Zinktellurid

Tellurdioxid ≥99%

Sigma-Aldrich

243450

Tellurdioxid

Khan, R.H. et al.
Synthetic Communications, 27, 2193-2193 (1997)
Guizhong Wang et al.
Optics express, 21(4), 4703-4708 (2013-03-14)
The octave-spanning spectrum was generated in a tellurite glass based microstructured fiber pumped by a 528 MHz repetition rate Yb:fiber ring laser without amplification. The laser achieved 40% output optical-to-optical efficiency with the output power of 410 mW. By adjusting
Zhe Liu et al.
Optics express, 21(6), 7799-7810 (2013-04-03)
ZnTe is an important p-type semiconductor with great applications as field-effect transistors and photodetectors. In this paper, individual ZnTe nanowires based field-effect transistors was fabricated, showing evident p-type conductivity with an effect mobility of 11.3 cm(2)/Vs. Single ZnTe nanowire based
Raymond J Turner et al.
Biotechnology advances, 30(5), 954-963 (2011-09-13)
Here, we overview the most recent advances in understanding the bacterial mechanisms that stay behind the reduction of tellurium oxyanions in both planktonic cells and biofilms. This is a topic of interest for basic and applied research because microorganisms are
Katja C Nowack et al.
Nature materials, 12(9), 787-791 (2013-06-19)
The quantum spin Hall (QSH) state is a state of matter characterized by a non-trivial topology of its band structure, and associated conducting edge channels. The QSH state was predicted and experimentally demonstrated to be realized in HgTe quantum wells.
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Questions

1–2 of 2 Questions  

  1. How is shipping temperature determined? And how is it related to the product storage temperature?

    1 answer

    1. Products may be shipped at a different temperature than the recommended long-term storage temperature. If the product quality is sensitive to short-term exposure to conditions other than the recommended long-term storage, it will be shipped on wet or dry-ice. If the product quality is NOT affected by short-term exposure to conditions other than the recommended long-term storage, it will be shipped at ambient temperature. As shipping routes are configured for minimum transit times, shipping at ambient temperature helps control shipping costs for our customers. For more information, please refer to the Storage and Transport Conditions document: https://www.sigmaaldrich.com/deepweb/assets/sigmaaldrich/marketing/global/documents/316/622/storage-transport-conditions-mk.pdf

      Helpful?

  2. How can I determine the shelf life / expiration / retest date of this product?

    1 answer

    1. If this product has an expiration or retest date, it will be shown on the Certificate of Analysis (COA, CofA). If there is no retest or expiration date listed on the product's COA, we do not have suitable stability data to determine a shelf life. For these products, the only date on the COA will be the release date; a retest, expiration, or use-by-date will not be displayed.
      For all products, we recommend handling per defined conditions as printed in our product literature and website product descriptions. We recommend that products should be routinely inspected by customers to ensure they perform as expected.
      For products without retest or expiration dates, our standard warranty of 1 year from the date of shipment is applicable.
      For more information, please refer to the Product Dating Information document: https://www.sigmaaldrich.com/deepweb/assets/sigmaaldrich/marketing/global/documents/449/386/product-dating-information-mk.pdf

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