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

Structure

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

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