| Formula / Notation | Tc |
|---|---|
| CAS Number | 7440-26-8 |
| Molecular Weight | 98.0 |
| Melting Point | 2157.0 |
| Boiling Point | 4265.0 |
| Density | 11.5 |
| Solubility | Soluble as TcO4- (pertechnetate) |
| Appearance | Silvery-grey metal (bulk); obtained as powder from reactors |
| Also Known As | Tc, technetium-99m |
| Category | Elements |
What is Technetium?
Technetium is a silvery-grey transition metal, atomic number 43, the lightest element with no stable isotopes. First artificially produced element (1937, Lawrence Berkeley Lab). All isotopes are radioactive. Tc-99m is by far the most used medical radioisotope.
Formula & Notation
IUPAC Name: Technetium
Other Names / Synonyms: Tc, technetium-99m
Properties & Characteristics
Physical Data
| Property | Value |
|---|---|
| Melting Point | 2157.0 |
| Boiling Point | 4265.0 |
| Density | 11.5 |
| Molecular Weight | 98.0 |
| Solubility | Soluble as TcO4- (pertechnetate) |
| Appearance | Silvery-grey metal (bulk); obtained as powder from reactors |
Uses & Applications
Safety Information
Always consult the SDS/MSDS before handling any chemical. This information is for educational purposes only.
Key Facts
Frequently Asked Questions
Technetium is a silvery-grey transition metal, atomic number 43, the lightest element with no stable isotopes. First artificially produced element (1937, Lawrence Berkeley Lab). All isotopes are radioactive. Tc-99m is by far the most used medical radioisotope.
Tc-99m: medical imaging (bone scans, cardiac perfusion, thyroid, kidney - most widely used medical radioisotope worldwide, ~80% of nuclear medicine procedures). Corrosion inhibitor (small amounts). Radioactive waste marker.
All isotopes radioactive. Tc-99m: beta and gamma radiation - handle with radiation precautions, short t1/2 minimises long-term exposure. Tc-99: long-lived beta emitter in nuclear waste - environmental concern. ALARA radiation protection principles apply.
The formula or notation for Technetium is: Tc