Germanium

CAS 7440-56-4GeMetal & Ceramic Science

Germanium (CAS 7440-56-4, Ge, MW 72.64) is a lustrous, hard, grayish-white metalloid. Tech Serve Solutions supplies Germanium powder with an assay of 99.999% trace metals basis. Its applications span various high-tech fields, including the development of advanced semiconductor materials, fibre optics, and thermoelectric devices. It serves as a critical precursor in material science and alternative energy research, underpinning innovation in these demanding sectors.

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Germanium (Ge) — chemical element, CAS 7440-56-4; Materials Science, fine chemical supplied by Tech Serve Solutions

Alternative EnergyGermaniumMaterials ScienceMetal and Ceramic ScienceMetalsThermoelectric Materials

01 /Applications

Semiconductor Industry

Germanium is a key element in the production of semiconductors, particularly in bipolar transistors and integrated circuits. Its unique electronic properties make it suitable for high-speed electronic devices.

Fibre Optics

It is used in the manufacturing of optical fibres for telecommunications. Germanium dioxide (GeO2) acts as a dopant to increase the refractive index of silica glass, enabling signal transmission over long distances.

Thermoelectric Materials

Germanium alloys, such as Bismuth Telluride doped with Germanium, are employed in thermoelectric devices for power generation and cooling applications. These materials convert heat energy into electrical energy and vice versa.

Catalysis

Germanium compounds can act as catalysts in certain chemical reactions. Its use in catalysis is an area of ongoing research for various industrial processes.

Materials Science Research

As a versatile metalloid, Germanium is extensively used in materials science research to develop novel alloys and compounds with specific physical and electronic properties.

02 /Properties

Molecular weight	72.64
Empirical formula	Ge
Assay	99.999% trace metals basis
Form	powder
Boiling point	2830 °C(lit.)
Density	5.35 g/mL at 25 °C(lit.)
Particle size	≥3 mm
Melting point	937 °C(lit.)

03 /Safety & handling

GHS hazard pictogram: Flammable (GHS02) — Flammable

Danger

Hazard statements

H228Flammable solid

Precautionary statements

P261Avoid breathing dust, fume, gas or vapours
P305IF IN EYES

Protective equipment	Eyeshields, full-face particle respirator type N100 (US), Gloves, respirator cartridge type N100 (US), type P1 (EN143) respirator filter, type P3 (EN 143) respirator cartridges
Transport (UN / ADR)	UN 3089 4.1 / PGII
Water hazard class (WGK, DE)	3
Hazard codes (EU)	F
Risk statements (R)	11

Hazard information is provided for guidance. Always consult the product Safety Data Sheet (SDS), available on request, before handling.

04 /Identifiers & registry

CAS number

7440-56-4

MDL number

MFCD00085310

PubChem substance

24852165

05 /Additional specifications

Resistivity	53000 μΩ-cm, 20°C

06 /Quality & supply

Documentation

Every batch ships with a Certificate of Analysis covering assay, identity and purity; the grade is confirmed against your enquiry. Safety Data Sheets and technical data sheets are available on request.

Supply & logistics

Samples for technical evaluation; bulk MOQ by grade and packaging. In-stock material ships in 7–10 working days, worldwide, with full export documentation.

07 /Frequently asked questions

What is Germanium (CAS 7440-56-4) used for?

Germanium is used in the semiconductor industry, fibre optics manufacturing, and for creating thermoelectric materials. It is also utilized in materials science research and as a catalyst precursor.

What are the CAS number and formula for Germanium?

The CAS number for Germanium is 7440-56-4, and its chemical formula is Ge.

What grade and purity does Tech Serve Solutions supply for Germanium?

Tech Serve Solutions supplies Germanium with an assay of 99.999% trace metals basis. This product is not represented as USP, BP, EP, or other pharmacopoeia grades.

How should Germanium powder be handled?

Germanium powder is a flammable solid (H228). Handle with care, avoiding ignition sources, and use appropriate personal protective equipment including eyeshields, gloves, and a suitable respirator (type N100 or P3). Ensure good ventilation.

How is Germanium packed, shipped, and exported?

Germanium is supplied as a powder and is classified under UN 3089, 4.1 / PGII, indicating it is a flammable solid. TSS ensures compliant packing and export procedures for this material.

How can I request a quote or sample for Germanium?

To request a quote or sample for Germanium, please contact our sales team via the website or by calling us. We will be happy to assist you with your inquiry.