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592-04-1

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Identification

Name
MERCURIC CYANIDE
CAS
592-04-1
Synonyms
CIANURINA
MERCURIC CYANIDE
MERCURY(+2)CYANIDE
MERCURY CYANIDE
MERCURY(II) CYANIDE
Cyanure de mercure
cyanuredemercure
cyanuredemercure(french)
dicyanomercury
Mercury cyanide (Hg(CN)2)
mercurycyanide(hg(cn)2)
mercurydicyanide
MERCURY(II) CYANIDE 99%
Mercury(II)cyanide,99%
MERCURICCYANIDE,REAGENT
Quecksilber(II)-cyanid
Mercury (II) cyanide, 99.7%
Dicyanomercury(II)
Mercury(II)dicyanide
EINECS(EC#)
209-741-6
Molecular Formula
C2HgN2
MDL Number
MFCD00011037
Molecular Weight
252.62
MOL File
592-04-1.mol

Chemical Properties

Appearance
Mercuric cyanide is an odorless, white crystalline solid; turns gray to dark brown when exposed to light
Appearance
WHITE FINE CRYSTALLINE POWDER
Melting point 
46.85°C
density 
3.996 g/mL at 25 °C(lit.)

storage temp. 
Poison room
form 
Fine Crystalline Powder
color 
White
Water Solubility 
g/100g solution H2O: 6.31 (0°C), 10.06±0.06 (25°C), 35.05 (101.1°C) [KRU93]; 1g dissolves in 13mL alcohol, 4mL methanol; slightly soluble ether; slowly soluble glycerol [MER06]
Merck 
13,5903
Uses
Medicine (antiseptic), germicidal soaps, manufacturing cyanogen gas, photography.
CAS DataBase Reference
592-04-1(CAS DataBase Reference)

Hazard Information

Chemical Properties
Mercuric cyanide is an odorless, white crystalline solid; turns gray to dark brown when exposed to light
Chemical Properties
WHITE FINE CRYSTALLINE POWDER
General Description
Odorless tetragonal crystals or white powder. Toxic by inhalation (dust, and the hydrogen cyanide from decomposition) and by ingestion. Toxic oxides of nitrogen are produced in fires.
Reactivity Profile
MERCURIC CYANIDE(592-04-1) is rapidly decomposed by acids to give off hydrogen cyanide, a flammable poison gas. Decomposed in the light. May tend to explosive instability. Capable of violent reaction with oxidizing agents. Fusion with metal chlorates, perchlorates, nitrates or nitrites can cause a violent explosion [Bretherick 1979. p. 101].
Air & Water Reactions
Soluble in water. Gradually decomposed by water to give off hydrogen cyanide, a flammable poison gas.
Hazard
Toxic by ingestion, inhalation, and skin absorption.
Health Hazard
Symptoms of both cyanide and mercury intoxication can occur. Acute poisoning has resulted from inhaling dust concentrations of 1.2-8.5 mg/m 3 of air; symptoms include tightness and pain in chest, coughing, and difficul ty in breathing; cyanide poisoning can cause anxiety, confusion, dizziness, and shortness of breath, with possible unconsciousness, convulsions, and paralysis; breath may smell like bitter almonds. Ingestion causes necrosis, pain, vomiting, an d severe purging, plus the above symptoms. Contact with eyes causes ulceration of conjunctiva and cornea. Contact with skin causes irritation and possible dermatitis; systemic poisoning can occur by absorption through skin.
Potential Exposure
Mercuric cyanide is used in medicine, germicidal soaps, photography and in making cyanogen gas
First aid
Move victim to fresh air. Call 911 or emergency medical service. Give artificial respiration if victim is not breathing. Do not use mouth-to-mouth method if victim ingested or inhaled the substance; give artificial respiration with the aid of a pocket mask equipped with a one-way valve or other proper respiratory medical device. Administer oxygen if breathing is difficult. Remove and isolate contaminated clothing and shoes. In case of contact with substance, immediately flush skin or eyes with running water for at least 20 minutes. For minor skin contact, avoid spreading material on unaffected skin. Keep victim warm and quiet. Effects of exposure (inhalation, ingestion, or skin contact) to substance may be delayed. Ensure that medical personnel are aware of the material(s) involved and take precautions to protect themselves. Medical observation is recommended for 24 to 48 hours after breathing overexposure, as pulmonary edema may be delayed. As first aid for pulmonary edema, a doctor or authorized paramedic may consider administering a drug or other inhalation therapy. Antidotes and Special Procedures for medical personnel: The drug NAP has been used to treat mercury poisoning, with mixed success.
Fire Hazard
Special Hazards of Combustion Products: Fumes from fire may contain toxic mercury and hydrogen cyanide.
Shipping
UN1636 Mercuric cyanide, Hazard Class: 6.1; Labels: 6.1-Poisonous materials
Incompatibilities
Violent reaction with fluorine, magnesium, sodium nitrite, acids. Heating or contact with acid releases toxic mercury and flammable hydrogen cyanide gas. Incompatible with oxidizers (chlorates, nitrates, peroxides, permanganates, perchlorates, chlorine, bromine, fluorine, etc.); contact may cause fires or explosions. Keep away from alkaline materials, strong bases, strong acids, oxoacids, epoxides
Waste Disposal
Return to supplier for mercury recovery and deactivation.
Purification Methods
Crystallise it from water. The solubility in H2O is 8% at ~20o and 33% at ~100o; in EtOH it is 8% at ~20o and in MeOH it is 25% at ~20o. [Blitz Z Anorg Allgem Chem 170 161 1928.] POISONOUS.

Safety Data

Hazard Codes 
T+,N
Risk Statements 
R26/27/28:Very Toxic by inhalation, in contact with skin and if swallowed .
R32:Contact with acids liberates very toxic gas.
R50/53:Very Toxic to aquatic organisms, may cause long-term adverse effects in the aquatic environment .
Safety Statements 
S7:Keep container tightly closed .
S28:After contact with skin, wash immediately with plenty of ... (to be specified by the manufacturer) .
S29:Do not empty into drains .
S45:In case of accident or if you feel unwell, seek medical advice immediately (show label where possible) .
S60:This material and/or its container must be disposed of as hazardous waste .
S61:Avoid release to the environment. Refer to special instructions safety data sheet .
RIDADR 
UN 1636 6.1/PG 2

WGK Germany 
3

RTECS 
OW1515000


8
HazardClass 
6.1(a)
PackingGroup 
II
HS Code 
28521000
Safety Profile
Poison by ingestion, subcutaneous, intravenous, and intraperitoneal routes. Human systemic effects by ingestion: nausea or vomiting, hypermotility, dlarrhea, kidney changes, somnolence. Hydrolyzes to toxic fumes. A frictionand impact-sensitive explosive. It may initiate detonation of liquid hydrogen cyanide. Incompatible with fluorine, magnesium, sodium nitrite. When heated to decomposition it emits very toxic fumes of Hg, NOx, and CN-. See also CYANIDE and MERCURY COMPOUNDS.

Raw materials And Preparation Products

Preparation Products
Ganciclovir

Material Safety Data Sheet(MSDS)

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