Mercurous chloride CAS#10112-91-1
High Purity & Stable Crystal Form
High-purity mercurous chloride with uniform white crystalline powder, low impurities, stable physical properties at room temperature.
Excellent Chemical Inertness
Chemically stable, insoluble in water and most solvents, resistant to weak acids and neutral substances.
Low Solubility & Low Toxicity
Slightly soluble in water, lower toxicity than other mercury compounds, safe for controlled industrial and pharmaceutical use.
Wide Traditional Application
Classic mercury compound with mature applications in medicine, electrochemistry and analytical chemistry.
Product Introduction
Calomel, also known as mercurous chloride, is a classic mercury-containing chemical compound with the molecular formula Hg₂Cl₂. It appears as white or off-white odorless crystalline powder, heavy in texture. Insoluble in water, ethanol and most organic solvents; slightly soluble in aqua regia and concentrated ammonia water. It is chemically stable under normal temperature and light, and darkens when exposed to strong light for a long time. It is widely used in pharmaceutical preparations, electrochemical electrodes, chemical analysis and other fields.
Calomel Chemical Properties
| Parameter | Standard Value |
|---|---|
| CAS Number | 10112-91-1 |
| Density | 7.15 g/cm³ (20°C) |
| Melting Point | 383°C (Sublimation) |
| Molecular Weight | 472.09 |
| pH Value | 6.5-7.5 (Saturated Suspension) |
| Purity | ≥99.0% |
| Solubility | Insoluble in water, ethanol; slightly soluble in aqua regia |
| Loss on Drying | ≤0.5% |
| Mercury Content | 84.5%-85.5% |
| Appearance | White or Off-white Crystalline Powder |
| Odor | Odorless |
| Stability | Stable at room temperature; darkens under strong light, incompatible with strong oxidants and alkali solutions. |
Safety Information
| Parameter | Standard Value |
|---|---|
| WGK Germany | 3 |
| RTECS Number | OV4200000 |
| HS Code | 2827399090 |
| Hazard Classification | Toxic Substance |
| Exposure Limit | TWA 0.025 mg/m³ (Mercury) |
| TSCA | Yes |
Main Application Fields
Calomel has important application value in multiple industries. It is mainly used in traditional Chinese medicine as an antiseptic and antibacterial raw material for external preparations. It serves as the core material for manufacturing calomel reference electrodes in electrochemistry. It is also widely used as a reagent for chemical analysis, a raw material for ceramic glazes, and a component of agricultural fungicides, with strict operation and management requirements.
