| Formula / Notation | Sb |
|---|---|
| CAS Number | 7440-36-0 |
| Molecular Weight | 121.76 |
| Melting Point | 630.6 |
| Boiling Point | 1587.0 |
| Density | 6.68 |
| Solubility | Insoluble in water |
| Appearance | Lustrous, silvery, hard, brittle metalloid |
| Also Known As | Sb, stibium, antimony element |
| Category | Elements |
What is Antimony?
Antimony is a lustrous, silvery metalloid, atomic number 51. Known since antiquity (kohl eye makeup was Sb2S3). Brittle and flaky. Used in alloys for hardening lead. Antimony trioxide is a major flame retardant synergist.
Formula & Notation
IUPAC Name: Antimony
Other Names / Synonyms: Sb, stibium, antimony element
Properties & Characteristics
Physical Data
| Property | Value |
|---|---|
| Melting Point | 630.6 |
| Boiling Point | 1587.0 |
| Density | 6.68 |
| Molecular Weight | 121.76 |
| Solubility | Insoluble in water |
| Appearance | Lustrous, silvery, hard, brittle metalloid |
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
Antimony is a lustrous, silvery metalloid, atomic number 51. Known since antiquity (kohl eye makeup was Sb2S3). Brittle and flaky. Used in alloys for hardening lead. Antimony trioxide is a major flame retardant synergist.
Lead-acid battery grids (Pb-Sb alloy hardener). Flame retardant synergist (Sb2O3 with halogenated compounds). Type metal (Pb-Sb-Sn for printing). Semiconductor (InSb for infrared detectors). Antimony trioxide in PVC. Tartar emetic (historical medicine).
Antimony and compounds: moderate toxicity - irritant to respiratory system and skin. Stibine (SbH3) gas: highly toxic (similar to arsine). Antimony trioxide: possible carcinogen (IARC Group 2B). Chronic exposure causes pneumoconiosis. OSHA PEL: 0.5 mg/m3.
The formula or notation for Antimony is: Sb