Catalog Number
ACM13494809
Category
One-Dimensional Nanomaterials
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.
Molecular Weight
127.6g/mol
InChI Key
PORWMNRCUJJQNO-UHFFFAOYSA-N
Boiling Point
1814° F amorphous powder 2534° F crystalline solid (EPA, 1998);989.9 °C;989.8 °C;1814°F;1814°F
Melting Point
842 °F (EPA, 1998);449.8 °C;449.5 °C;842°F;842°F
Density
6.24 (EPA, 1998);6.11-6.27;6.0-6.25 g/cm³;6.24;6.24
Solubility
Insoluble (NIOSH, 2016);Insol in benzene, carbon disulfide;INSOL IN HOT & COLD WATER, HYDROCHLORIC ACID; SOL IN NITRIC ACID, AQ REGIA, POTASSIUM CYANIDE, POTASSIUM HYDROXIDE, SULFURIC ACID;Solubility in water: none;Insoluble
Autoignition Temperature
340 °C
Color/Form
Grayish-white, lustrous, brittle, crystalline solid, hexagonal, rhombohedral structure;Dark-gray to brown, amorphous powder with metal characteristics
Covalently-Bonded Unit Count
1
Decomposition
When heated to decomposition it emits toxic fumes of /tellurium/.
Exact Mass
129.906223g/mol
Heat of Vaporization
46.0 kJ/g
Monoisotopic Mass
129.906223g/mol
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
INDEX OF REFRACTION: 1.0025; SADTLER REFERENCE NUMBER: 5272 (IR, PRISM)
Stability
TARNISHES SLIGHTLY IN AIR
UNII
NQA0O090ZJ;7F4735942K
Vapor Pressure
1 mm Hg at 968 °F (EPA, 1998);1 mmHg at 968°F;0 mmHg (approx)
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