CAS 13494-80-9 Tellurium Nanoparticles - Materials / Alfa Chemistry

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Tellurium Nanoparticles

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Catalog Number

ACM13494809-4

CAS Number

13494-80-9

Product Name

Tellurium Nanoparticles

Category

Electronic Materials

Synonyms

Tellurium nanopowder

Description

Grayish-white, lustrous, brittle, crystalline solid; dark-gray to brown, amorphous powder with metallic characteristics. Used as a coloring agent in chinaware, porcelains, enamels, glass; producing black finish on silverware; semiconductor devices and research; manufacturing special alloys of marked electrical resistance. Improves mechanical properties of lead; powerful carbide stabilizer in cast iron, tellurium vapor in "daylight" lamps, vulcanization of rubber. Blasting caps. Semiconductor research. (EPA, 1998);DARK GREY-TO-BROWN AMORPHOUS POWDER, WITH METAL CHARACTERISTICS OR SILVERY-WHITE, LUSTROUS CRYSTALLINE SOLID.;Odorless, dark-gray to brown, amorphous powder or grayish-white, brittle solid.;Odorless, dark-gray to brown, amorphous powder or grayish-white, brittle solid.

IUPAC Name

tellurium

Molecular Weight

127.60 g/mol

Molecular Formula

Canonical SMILES

[Te]

InChI

InChI=1S/Te

InChI Key

PORWMNRCUJJQNO-UHFFFAOYSA-N

Boiling Point

988 °C

Melting Point

449.51 °C

Purity

99.9 %

Density

6.24 g/cm³

Solubility

Insoluble in water

Appearance

Solid

Application

Tellurium nanoparticles harness the unique properties of tellurium, a silvery-gray semimetal with a notable crystalline structure and semiconductive properties. These nanoparticles are particularly valuable due to their enhanced conductivity, which is sensitive to light exposure, making them ideal for applications in the electronics industry, including the development of advanced semiconductors and photoreceptors. Furthermore, tellurium's compatibility with other elements allows for its use in creating special alloys that exhibit remarkable electrical resistance. By leveraging the distinctive characteristics of tellurium, these nanoparticles are designed to improve the performance and durability of materials while expanding their applications in high-tech fields.

Average Particle Size

80-100 nm

Color/Form

Grayish-white, lustrous, brittle, crystalline solid, hexagonal, rhombohedral structure;Dark-gray to brown, amorphous powder with metal characteristics

Complexity

Covalently-Bonded Unit Count

Crystal Phase

Hexagonal

EC Number

236-813-4

Electrical Resistivity

436000 µΩ · cm (20 °C

Exact Mass

129.906223g/mol

Formal Charge

Hazard Statements

H301-H315+H319+H335-H332

HeatOfFusion

17.49 kJ/mol

Heat of Vaporization

114.1 kJ/mol

Heavy Atom Count

ICSC Number

0986

MDL Number

MFCD00134062

MeSH Entry Terms

Tellurium

Monoisotopic Mass

129.906223g/mol

Odor

Odorless.

Other Experimental

Vapor pressure between 511 and 835 °C is given by equation logP(kPa)= 6.7249-(5960.2/K);Diatomic in vapor state; atomic number 52, valence 2, 4, 6; in air dissolves in potassium hydroxide; electrical resistivity at 19.6 °C: 200,000 micro-ohms/cm; reacts with nitric acid, not with hydrochloric acid; linear coefficient of thermal expansion: 16.8X10-6/deg C; latent heat of fusion: 4.27 kcal/mol; hardness (Mohs): 2.3; magnetic susceptibility at 18 °C: -0.31X10-6 cgs; specific heat (solid): 0.047 cal/g/deg C;TELLURIUM BURNS IN AIR WITH A GREENISH-BLUE FLAME TO FORM TELLURIUM DIOXIDE;Combines with halogens, does not react with sulfur or selenium; modulus of elasticity: 6000000 psi. ... Eight stable isotopes: 120, 122, 123, 124, 125, 126, 128, 130; reacts with concentrated or fuming sulfuric acid

Refractive Index

1.000991

Rotatable Bond Count

RTECS Number

WY2625000

Safety Description

13-28-45-61

Stability

TARNISHES SLIGHTLY IN AIR

UNII

NQA0O090ZJ;7F4735942K

UN Number