Description

Thallium CAS NO 7440-28-0 is a soft, malleable, post-transition metal with a characteristic bluish-white appearance that tarnishes to gray upon air exposure. Its unique combination of electrical conductivity, low melting point, and high density makes it a critical material for specialized industrial and research applications. This element is essential for manufacturers and R&D facilities in sectors such as electronics, specialized optics, and high-performance alloy development.

Application

• Electronics & Semiconductor Manufacturing: Used in the production of specialized photoelectric cells, infrared optical materials, and low-melting-point glasses.
• Specialized Alloy Production: Serves as a component in alloys for bearings, seals, and electrical contacts, enhancing strength and corrosion resistance.
• Research & Chemical Synthesis: Acts as a precursor or catalyst in organic synthesis and materials science research.
• Medical & Diagnostic Isotopes (Historical/Research): Used in the production of radioisotopes (like Thallium-201) for specialized cardiac imaging in nuclear medicine research.
• High-Density Fluids: Employed in the formulation of dense inorganic solutions for mineral separation and geophysical testing.
• Specialty Glass & Optics: Imparts a high refractive index to glass used in precision lenses and optical fibers.

Basic Information

Product Name	Thallium
CAS No.	7440-28-0
Molecular Formula	Tl
Molecular Weight	204.38 g/mol
Synonyms	Thallium metal; Thallium element; Thallium-205; Metallic thallium; UN 1707
EINECS	231-138-1

Quality Control

Our Thallium is produced and handled under strict quality management protocols to ensure batch-to-batch consistency and purity. We provide comprehensive Certificates of Analysis (COA) detailing assay, impurity profiles, and physical specifications. Our quality systems are designed to meet the stringent requirements of industrial and research applications, ensuring reliable performance and traceability.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area away from incompatible materials such as strong acids and oxidizers. Due to its toxicity and air sensitivity, storage under an inert atmosphere (e.g., argon) is recommended for long-term preservation of quality. Keep container tightly sealed when not in use.

Specification

Item	Specification
Appearance	Bluish-white metal, tarnishing to gray
Assay (Tl)	≥ 99.9%
Lead (Pb)	≤ 0.05%
Iron (Fe)	≤ 0.01%
Copper (Cu)	≤ 0.005%
Zinc (Zn)	≤ 0.005%
Melting Point	304 °C
Density	11.85 g/cm³ @ 20°C

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