Sodium telluride

Sodium telluride
Sodium telluride
Names
Other names
Disodium telluride; hydrotelluric acid, sodium salt
Identifiers
3D model (JSmol)
ECHA InfoCard 100.031.629 Edit this at Wikidata
EC Number
  • 234-806-0
  • Key: MQRWPMGRGIILKQ-UHFFFAOYSA-N
  • InChI=1S/2Na.Te
  • [Na][Te][Na]
Properties
Na2Te
Molar mass 173.58 g/mol
Appearance white powder,
hygroscopic
Density 2.90 g/cm3, solid
Melting point 953 °C (1,747 °F; 1,226 K)
very soluble
Hazards
Occupational safety and health (OHS/OSH):
Main hazards
In contact with water releases flammable gas
GHS labelling:[1]
GHS02: Flammable GHS07: Exclamation mark
Warning
H261, H302+H312+H332, H315, H319
P261, P264, P270, P271, P280, P302+P352, P304+P340, P305+P351+P338, P312, P330, P335+P334, P362, P370+P378, P402+P404, P501
NFPA 704 (fire diamond)
NFPA 704 four-colored diamondHealth 2: Intense or continued but not chronic exposure could cause temporary incapacitation or possible residual injury. E.g. chloroformFlammability 0: Will not burn. E.g. waterInstability 1: Normally stable, but can become unstable at elevated temperatures and pressures. E.g. calciumSpecial hazards (white): no code
2
0
1
Related compounds
Other anions
Sodium oxide
Sodium sulfide
Sodium selenide
Sodium polonide
Other cations
Hydrogen telluride
Lithium telluride
Potassium telluride
Rubidium telluride
Caesium telluride
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
☒N verify (what is checkY☒N ?)

Sodium telluride is the chemical compound with the formula Na2Te. This salt is the conjugate base of the thermally unstable acid hydrogen telluride, but it is usually prepared by reduction of tellurium with sodium. Na2Te is a challenging material to handle because it is very sensitive to air. Air oxidizes it initially to polytellurides, which have the formula Na2Tex (x > 1), and ultimately Te metal. Samples of Na2Te, which are colourless when absolutely pure, generally appear purple or dark gray due to the effects of air oxidation.

  1. ^ "12034-41-2 - Sodium telluride, 99.9% (metals basis) - 41777 - Alfa Aesar". www.alfa.com.