Wholesale Mercury(I) chloride for sell with low price
Mercury(I) chloride is the chemical compound with the formula Hg2Cl2. Also known as the mineral calomel (a rare mineral) or mercurous chloride, this dense white or yellowish-white, odorless solid is the principal example of a mercury(I) compound. It is a component of reference electrodes in electrochemistry.
CAS Number: 10112-91-1
ECHA InfoCard: 100.030.266
EC Number: 233-307-5
PubChem CID: 24956
RTECS number: OV8750000
UN number: 3077
Chemical formula: Hg2Cl2
Molar mass: 472.09 g/mol
Appearance: White solid
Density: 7.150 g/cm3
Melting point: 525 °C (977 °F; 798 K) (triple point)
Boiling point: 383 °C (721 °F; 656 K) (sublimes)
Solubility in water: 0.2 mg/100 mL
Solubility: insoluble in ethanol, ether
Magnetic susceptibility (χ): −26.0·10−6 cm3/mol
Refractive index (nD): 1.973
Mercury is unique among the group 12 metals for its ability to form the M–M bond so readily. Hg2Cl2 is a linear molecule. The mineral calomel crystallizes in the tetragonal system, with space group I4/m 2/m 2/m.
The Hg–Hg bond length of 253 pm (Hg–Hg in the metal is 300 pm) and the Hg–Cl bond length in the linear Hg2Cl2 unit is 243 pm. The overall coordination of each Hg atom is octahedral as, in addition to the two nearest neighbours, there are four other Cl atoms at 321 pm. Longer mercury polycations exist.
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