Description

Ammonium Tellurite is an inorganic salt of tellurium, a critical metalloid with unique semiconductor and catalytic properties. This compound serves as a versatile and high-purity source of tellurium for advanced material synthesis and specialty chemical manufacturing. It is essential for researchers and industrial producers in the electronics, glass, and metallurgical sectors seeking a reliable precursor for tellurium-based compounds.

Application

• Semiconductor Manufacturing: As a key precursor for the synthesis of cadmium telluride (CdTe) and other II-VI compound semiconductors used in thin-film solar cells and infrared detectors.
• Glass & Ceramics Industry: Imparts specific coloration (pink, brown) and modifies the refractive index in specialty optical glasses and decorative ceramics.
• Metallurgical Additive: Used as an alloying agent to improve the machinability of metals like steel and copper, and to enhance lead's hardness and corrosion resistance.
• Chemical Synthesis: Acts as a starting material or catalyst in organic synthesis and for producing other high-purity tellurium compounds, such as tellurium dioxide.
• Research & Development: Employed in academic and industrial labs for developing novel materials, including thermoelectrics and phase-change memory alloys.
• Electroplating: Used in specific electroplating baths to deposit tellurium or tellurium alloy coatings for specialized electronic or decorative finishes.

Basic Information

Product Name	Ammonium Tellurite
CAS No.	80302-25-6
Molecular Formula	(NH4)2TeO3 or (NH4)2TeO3·H2O
Molecular Weight	Anhydrous: 227.69 g/mol Monohydrate: 245.71 g/mol
Synonyms	Diammonium tellurite; Telluric acid, diammonium salt; Ammonium tellurate(IV); Diammonium trioxotellurate; Tellurium, ammonium salt
EINECS	Contact for details

Quality Control

Our Ammonium Tellurite is manufactured under strict quality management protocols. Each batch undergoes rigorous analytical testing to ensure high chemical purity and consistency, meeting the stringent requirements of advanced material production. A comprehensive Certificate of Analysis (COA) detailing assay, impurity profiles, and physical characteristics is provided with every shipment to guarantee traceability and compliance with your specifications.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at room temperature (15-25°C). Due to its hygroscopic nature, the container must be kept tightly sealed to minimize exposure to atmospheric moisture. Keep away from incompatible materials.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms
Assay (as (NH4)2TeO3)	≥ 98.0%
Solubility (in water)	Clear, colorless solution
Loss on Drying	≤ 2.0%
Heavy Metals (as Pb)	≤ 20 ppm
Chloride (Cl)	≤ 100 ppm
Sulfate (SO4)	≤ 100 ppm

Note: Specifications can be tailored. Please contact us for the detailed technical data sheet of a specific grade.