Tellurium Nanoparticles

• CAS: 13494-80-9
• Catalog Number: ACM13494809-4
• Category: Nanoparticles & Nanopowders
• Molecular Weight: 127.60 g/mol
• Molecular Formula: Te
• 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.
• Synonyms: Tellurium nanopowder
• IUPAC Name: tellurium
• Canonical SMILES: [Te]
• InChI: InChI=1S/Te
• InChI Key: PORWMNRCUJJQNO-UHFFFAOYSA-N
• Boiling Point: 988 °C
• Melting Point: 449.51 °C
• Density: 6.24 g/cm³
• Solubility: Insoluble in water
• Appearance: Solid
• Autoignition Temperature: 340 °C
• Color/Form: Grayish-white, lustrous, brittle, crystalline solid, hexagonal, rhombohedral structure;Dark-gray to brown, amorphous powder with metal characteristics
• Complexity: 0
• Covalently-Bonded Unit Count: 1
• Crystal Phase: Hexagonal
• Decomposition: When heated to decomposition it emits toxic fumes of /tellurium/.
• EC Number: 236-813-4
• Electrical Resistivity: 436000 µΩ · cm (20 °C
• Electronegativity: 2.1 Paulings
• Exact Mass: 129.906223g/mol
• Formal Charge: 0
• Harmonized Tariff Code: WY2625000
• Hazard Codes: T
• Hazard Statements: H301-H315+H319+H335-H332
• H-Bond Acceptor: 0
• H-Bond Donor: 0
• Heat of Fusion: 17.49 kJ/mol
• Heat of Vaporization: 114.1 kJ/mol
• Heavy Atom Count: 1
• ICSC Number: 0986
• MDL Number: MFCD00134062
• 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: 0
• RTECS Number: WY2625000
• Safety Description: 13-28-45-61
• Specific Heat: 0.20 J/g·K
• Stability: TARNISHES SLIGHTLY IN AIR
• Thermal Conductivity: 1.97-3.0 W/m·K
• Thermal Expansion: 18 µm/m·K (20 °C)
• UNII: NQA0O090ZJ;7F4735942K
• UN Number: 1325
• Vapor Pressure: 1 mm Hg at 968 °F (EPA, 1998);1 mmHg at 968°F;0 mmHg (approx)
• Viscosity: 1.8-1.95 cP
• Young's Modulus: 43 GPa