LN2174030
99.5% , 10112-91-1
Synonym(s):
Calomel;Mercurous chloride
CAS NO.：10112-91-1
Empirical Formula: Cl2Hg2
Molecular Weight: 472.09
MDL number: MFCD00011043
EINECS: 233-307-5
Update time: 2022-07-08
PRODUCT Properties
| Melting point: | 400 °C (subl.)(lit.) |
| Boiling point: | 383°C |
| Density | 7.15 |
| vapor pressure | 1.7 mm Hg at 236 °C |
| storage temp. | Poison room |
| solubility | insoluble in ethanol, ethyl ether |
| form | powder |
| Specific Gravity | 7.15 |
| color | White |
| Odor | Odorless |
| Water Solubility | Soluble in (0.002g/L )water. |
| Sensitive | Moisture & Light Sensitive |
| Merck | 14,5894 |
| Solubility Product Constant (Ksp) | pKsp: 17.88（25°C） |
| Dielectric constant | 7.0（Ambient） |
| Exposure limits | ACGIH: TWA 0.025 mg/m3 (Skin) NIOSH: IDLH 10 mg/m3; TWA 0.05 mg/m3; Ceiling 0.1 mg/m3 |
| InChIKey | ZOMNIUBKTOKEHS-UHFFFAOYSA-L |
Description and Uses
Mercury(I) chloride, a colorless solid also known as the mineral calomel, is the compound with the formula Hg2Cl2, with
the connectivity Cl-Hg-Hg-Cl. It reacts with chlorine to form mercuric chloride, which resists further oxidation. Hg2Cl2 is
a linear molecule. Mercurous chloride forms through the reaction of elemental mercury and mercuric chloride.
Hg + HgCl2→Hg2Cl2
Calomel is used as a laboratory reagent, as a fungicide, and as a depolarizer in dry batteries.
Safety
| Symbol(GHS) |    GHS07,GHS08,GHS09 |
| Signal word | Danger |
| Hazard statements | H302+H312-H315-H319-H334-H335-H410-H302-H400 |
| Precautionary statements | P280a-P405-P501a-P261-P280-P284-P304+P340-P305+P351+P338-P342+P311 |
| Hazard Codes | Xn,N |
| Risk Statements | 22-36/37/38-50/53 |
| Safety Statements | 13-24/25-46-60-61 |
| RIDADR | UN 2811 6.1/PG 3 |
| WGK Germany | 3 |
| RTECS | OV8740000 |
| TSCA | Yes |
| HazardClass | 6.1 |
| PackingGroup | II |
