Description

Sodium Tellurite Pentahydrate is an inorganic salt of tellurium, widely utilized as a versatile precursor and reagent in advanced material synthesis and specialty chemistry. Its primary value lies in providing a soluble and reactive source of tellurite ions, which are essential for creating tellurium-containing compounds and alloys. This product is critical for manufacturers and R&D laboratories in the electronics, metallurgy, and chemical catalyst sectors seeking high-purity intermediates.

Application

• Electroplating & Metallurgy: As an additive in electroplating baths for depositing tellurium and tellurium alloy coatings, which can enhance corrosion resistance and modify surface properties.
• Glass & Ceramics Manufacturing: Used to impart specific colors or to modify the optical and electrical properties of specialty glasses and ceramic glazes.
• Chemical Synthesis & Catalysis: Serves as a key starting material or catalyst precursor in organic synthesis and for the production of other tellurium compounds.
• Semiconductor & Electronics: Employed in the research and development of semiconductor materials, thermoelectrics, and phase-change memory alloys.
• Bacteriological Media: A selective component in certain culture media used for microbiological identification in laboratory settings.
• Analytical Chemistry: Used as a standard or reagent in various analytical and testing procedures.

Basic Information

Product Name	Sodium Tellurite Pentahydrate
CAS No.	22451-06-5
Molecular Formula	Na2TeO3 · 5H2O
Molecular Weight	333.62 g/mol (Pentahydrate)
Synonyms	Disodium Tellurite Pentahydrate; Tellurous Acid, Disodium Salt, Pentahydrate; Sodium Tellurite(IV) Pentahydrate; Sodium Tellurite; Sodium Tellurite (Na2TeO3) Pentahydrate; Tellurite Sodium Salt Pentahydrate; Natriumtellurit Pentahydrat (German)
EINECS	244-973-1 (Anhydrous basis)

Quality Control

Our Sodium Tellurite Pentahydrate is manufactured under a strict quality management system. Each batch undergoes rigorous analytical testing to ensure it meets precise chemical and physical specifications. A comprehensive Certificate of Analysis (COA) detailing purity, assay, and impurity profiles is provided with every shipment to guarantee traceability and compliance with your project requirements.

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). This product is hygroscopic (moisture-sensitive) and must be kept in a dry environment to prevent caking or degradation. Keep away from incompatible materials.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms
Assay (Na2TeO3·5H2O)	≥ 98.0 %
Solubility (in Water)	Clear, colorless solution
pH (5% Solution)	9.0 - 11.0
Loss on Drying	26.0 - 28.0 %
Heavy Metals (as Pb)	≤ 20 ppm
Chloride (Cl)	≤ 0.01 %
Sulfate (SO4)	≤ 0.02 %

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