Back سيانيد الزئبق الثنائي Arabic سیانید جیوه (II) AZB Cianur de mercuri(I) Catalan Quecksilber(II)-cyanid German سیانید جیوه (II) Persian Elohopeasyanidi Finnish Cyanure de mercure(II) French Higany(II)-cianid Hungarian Cianuro mercurico Italian シアン化水銀(II) Japanese

Mercury(II) cyanide

Mercury(II) cyanide
Names
IUPAC name
dicyanomercury
Other names
mercuric cyanide; cyanomercury; neutral mercury cyanide (1:2); mercury dicyanide; hydrargyri cyanidum[1] (homeopathy)
Identifiers
3D model (JSmol)
3679510
ChEBI
ChemSpider
ECHA InfoCard 100.008.857 Edit this at Wikidata
EC Number
  • 209-741-6
2563
UNII
UN number 1636
  • InChI=1S/2CN.Hg/c2*1-2;
    Key: FQGYCXFLEQVDJQ-UHFFFAOYSA-N
  • InChI=1/2CN.Hg/c2*1-2;/rC2HgN2/c4-1-3-2-5
    Key: FQGYCXFLEQVDJQ-RYFBSBGDAX
  • C(#N)[Hg]C#N
Properties
Hg(CN)2
Molar mass 252.63 g/mol
Appearance colorless crystals or white powder
Odor odorless
Density 3.996 g/cm3
Melting point 320 °C (608 °F; 593 K)[3] (decomposes)
9.3 g/100 mL (14 °C)
53.9 g/100 mL (100 °C)[2]
Solubility 25 g/100 mL (methanol, 19.5 °C)
soluble in ethanol, ammonia, glycerin
slightly soluble in ether
insoluble in benzene
−67.0·10−6 cm3/mol
1.645
Hazards
Occupational safety and health (OHS/OSH):
Main hazards
 Highly toxic
GHS labelling:[4]
GHS06: ToxicGHS08: Health hazardGHS09: Environmental hazard
Danger
H300, H301, H310, H330, H373, H410
P260, P262, P264, P270, P271, P273, P280, P284, P301+P310, P302+P350, P304+P340, P310, P314, P320, P322, P330, P361, P363, P391, P403+P233, P405, P501
NFPA 704 (fire diamond)
NFPA 704 four-colored diamondHealth 4: Very short exposure could cause death or major residual injury. E.g. VX gasFlammability 0: Will not burn. E.g. waterInstability 2: Undergoes violent chemical change at elevated temperatures and pressures, reacts violently with water, or may form explosive mixtures with water. E.g. white phosphorusSpecial hazard POI: Poisonous
4
0
2
POI
Lethal dose or concentration (LD, LC):
26 mg/kg
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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Mercury(II) cyanide, also known as mercuric cyanide, is a poisonous compound of mercury and cyanide. It is an odorless, toxic white powder. It is highly soluble in polar solvents such as water, alcohol, and ammonia, slightly soluble in ether, and insoluble in benzene and other hydrophobic solvents.[3]

  1. ^ "Hydrargyrum. Mercury. Part 5." http://chestofbooks.com/health/materia-medica-drugs/Manual-Pharmacology/Hydrargyrum-Mercury-Part-5.html (accessed April 1, 2009).
  2. ^ Cite error: The named reference Aylett was invoked but never defined (see the help page).
  3. ^ a b Kocovsky, P., G. Wang, and V. Sharma. "Mercury(II) Cyanide." e-EROS Encyclopedia of Reagents for Organic Synthesis. Chichester, UK: John Wiley & Sons, Ltd., 2001. http://www.mrw.interscience.wiley.com/eros/articles/rm034/sect0-fs.html
  4. ^ "Mercuric cyanide". pubchem.ncbi.nlm.nih.gov. Retrieved 23 December 2021.
  5. ^ "MERCURIC CYANIDE | CAMEO Chemicals | NOAA".
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