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Linear Formula: Na2TeO3
CAS Number: 10102-20-2
Molecular Weight: 221.58
EC Number: 233-268-4
MDL number: MFCD00036141
About Sodium Tellurite
Sodium Tellurite is an alkali tellurite that is majorly used in the formation of glasses due to its unique properties which include good transmittance, refractive index, and high chemical resistance.
Sodium Tellurite can be used as a tellurite source for the preparation of quantum dots.
Sodium Tellurite is generally immediately available in most volumes.
High purity, submicron and nanopowder forms may be considered.
Sodium Tellurite are rare oxide minerals containing tellurium dioxide.
Sodium Tellurite can be reduced to elemental tellurium by electrolysis or a strong reducing agent but are still considered one of the more stable tellurium compounds.
American Elements produces to many standard grades when applicable, including Mil Spec (military grade); ACS, Reagent and Technical Grade; Food, Agricultural and Pharmaceutical Grade; Optical Grade, USP and EP/BP (European Pharmacopoeia/British Pharmacopoeia) and follows applicable ASTM testing standards.
Typical and custom packaging is available.
Additional technical, research and safety (MSDS) information is available as is a Reference Calculator for converting relevant units of measurement.
Sodium Tellurite is an inorganic tellurium compound with formula Na2TeO3.
Disodium trioxotellurate is a water-soluble white solid and a weak reducing agent.
Sodium Tellurite is an intermediate in the extraction of the element, tellurium; it is a SODIUM TELLURITE obtained from anode slimes and is a precursor to tellurium.
Sodium tellurite improves the corrosion resistance of electroplated nickel layers.
Solutions of Sodium Tellurite are used for black or blue-black coatings on iron, steel, aluminum, and copper.
In microbiology, sodium tellurite can be added to the growth medium to isolate bacteria with an inherent physiological resistance to its toxicity.
White solid; [Merck Index] White powder; [MSDSonline] Soluble in hot water; [Sax]
Sodium Tellurite is an inorganic tellurium compound.
Sodium Tellurite(IV) is a weak reducing agent.
Sodium Tellurite(IV) is an intermediate in the extraction of the element, tellurium; it is a mineral obtained from slimes and is a precursor to tellurium.
PROPERTIES
Quality Level: 100
Assay: 99%
Form: powder
Particle size: −100 mesh
SMILES string: [Na+].[Na+].[O-][Te]([O-])=O
InChI: 1S/2Na.H2O3Te/c;;1-4(2)3/h;;(H2,1,2,3)/q2*+1;/p-2
InChI key: VOADVZVYWFSHSM-UHFFFAOYSA-L
Compound Formula: Na2O3Te
Molecular Weight: 221.58
Appearance: White powder
Melting Point: N/A
Boiling Point:N/A
Density: N/A
Solubility in H2O: N/A
Exact Mass: N/A
Monoisotopic Mass: 223.870514
Charge: N/A
Sodium tellurite is a colorless solid. The tellurite ion can react with water to make sodium hydrogen tellurite, NaHTeO3.
Tellurous Acid dissolves in water easily.
Sodium Tellurite is a weak oxidizing agent (can be reduced to tellurium) and a weak reducing agent (can be oxidized to tellurates).
Sodium Tellurite is part of the process in making tellurium.
Applications
Sodium tellurite(IV) acts as an intermediate used in the extraction of the tellurium.
Disodium trioxotellurate is used to make corrosion-resistant electroplated nickel.
Sodium Tellurite is also used to add a bluish coating to iron, steel and aluminum.
Sodium Tellurite serves as a growth medium for bacteria in microbiology.
Sodium tellurite improves the corrosion resistance of electroplated nickel layers.
Solutions of sodium tellurite are used for black or blue-black coatings on iron, steel, aluminum, and copper.
In microbiology, sodium tellurite can be added to the growth medium to isolate bacteria with an inherent physiological resistance to its toxicity.
Sodium Tellurite is an intermediate in the extraction of the element, tellurium; it is obtained from anode slimes and is a precursor to tellurium.
Sodium Tellurite is mainly used in metal surface treatment.
Physical Description
Sodium tellurite appears as white crystals.
Used in bacteriology and medicine.
Structure and properties
Tellurous Acid has properties similar to sulfur and selenium.
In the anhydrous form Na2TeO3 the tellurium atoms are 6 coordinate, three Te-O at 1.87 Å and three at 2.9 Å, with distorted octahedra sharing edges.
In the pentahydrate, Na2TeO3.5H2O there are discrete tellurite anions, TeO32− which are pyramidal.
The Te-O distance is 1.85 - 1.86 Å and the O-Te-O angle is close to 99.5°.
The Disodium trioxotellurate anion is a weak base. Sodium tellurite would be similar to sodium selenite and sodium sulfite.
Sodium tellurite is both a weak oxidizing agent and a weak reducing agent.
Color/Form: Rhombic prism
Solubility: Greater than or equal to 100 mg/mL at 68° F (NTP, 1992)
Decomposition: When heated to decomposition it emits toxic fumes of /tellurium & disodium oxide/.
Category: Standards; Inorganics; Pharmaceutical/API Drug Impurities/Metabolites;
Preparation
The main source of tellurium is from copper anode slimes, which contain precious metals as well as various tellurides.
These slimes are roasted with sodium carbonate and oxygen to produce sodium tellurite.
Ag2Te + Na2CO3 + O2 → 2Ag + Na2TeO3 + CO2 (400–500 °C)
This is a reaction with silver telluride.
The telluride is oxidized to tellurite and the silver(I) is reduced to silver.
PubChem Substance ID: 24864941
NACRES: NA.23
IUPAC Name: disodium tellurite
SMILES: [Na+].[Na+].[O-][Te]([O-])=O
Major Category: Metals
Synonym(s):
Disodium trioxotellurate
Sodium Tellurite
10102-20-2
disodium tellurite
disodium;tellurite
UNII-0BB57LA23Y
0BB57LA23Y
SODIUM TELLURATE(IV)
Disodium trioxotellurate
MFCD00036141
TELLUROUS ACID, DISODIUM SALT
HSDB 6441
EINECS 233-268-4
Telluric acid (H2TeO3), disodium salt
Telluric acid, disodium salt
Sodium tellurite(IV)
Sodium tellurite (IV)
2Na.O3Te
O3-Te.2Na
Telluric acid (H2TeO3), sodium salt (1:2)
ACMC-1C99N
Sodium tellurite(IV), 97%
DTXSID2064943
5259AF
AKOS015911231
AKOS025243255
FT-0689184
S0965
Q2364532
