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MERCURIC THIOCYANATE

MERCURIC THIOCYANATE
MERCURIC THIOCYANATE structure
CAS No.
592-85-8
Chemical Name:
MERCURIC THIOCYANATE
Synonyms
MERCURY RHODANIDE;mercurythiocyanate;Mercury(II) thiocyan;MERCURY SULFOCYANIDE;MERCURIC THIOCYANATE;mercuricsulfocyanide;mercurydithiocyanate;Mercury sulfocyanate;MERCURIC SULFOCYANATE;MercuricThiocyanateGr
CBNumber:
CB0111438
Molecular Formula:
C2HgN2S2
Formula Weight:
316.75
MOL File:
592-85-8.mol

MERCURIC THIOCYANATE Properties

Melting point:
165 °C (dec.)(lit.)
Density 
3.71 g/mL at 25 °C(lit.)
Flash point:
120 °C
storage temp. 
Store at RT.
form 
Powder
color 
White to pale yellow
Water Solubility 
Soluble in dilute hydrochloric acid, potassium cyanide and ammonia. Slightly soluble in alcohol and ether. Insoluble in water.
Sensitive 
Hygroscopic
Merck 
14,5890
BRN 
3561344
Stability:
Stable. Incompatible with strong acids. May be light or moisture sensitive.
CAS DataBase Reference
592-85-8(CAS DataBase Reference)
SAFETY
  • Risk and Safety Statements
  • Hazard and Precautionary Statements (GHS)
Hazard Codes  T+,N,Xn
Risk Statements  26/27/28-32-33-50/53-20/21/22
Safety Statements  13-28-45-60-61-46-36/37
RIDADR  UN 1646 6.1/PG 2
WGK Germany  3
RTECS  XL1550000
8
TSCA  Yes
HazardClass  6.1
PackingGroup  II
HS Code  28521000
Symbol(GHS):
Signal word: Danger
Hazard statements:
Code Hazard statements Hazard class Category Signal word Pictogram P-Codes
H300 Fatal if swallowed Acute toxicity,oral Category 1, 2 Danger P264, P270, P301+P310, P321, P330,P405, P501
H311 Toxic in contact with skin Acute toxicity,dermal Category 3 Danger P280, P302+P352, P312, P322, P361,P363, P405, P501
H330 Fatal if inhaled Acute toxicity,inhalation Category 1, 2 Danger P260, P271, P284, P304+P340, P310,P320, P403+P233, P405, P501
H373 May cause damage to organs through prolonged or repeated exposure Specific target organ toxicity, repeated exposure Category 2 Warning P260, P314, P501
H400 Very toxic to aquatic life Hazardous to the aquatic environment, acute hazard Category 1 Warning P273, P391, P501
H410 Very toxic to aquatic life with long lasting effects Hazardous to the aquatic environment, long-term hazard Category 1 Warning P273, P391, P501
Precautionary statements:
P320 Specific treatment is urgent (see … on this label).
P330 Rinse mouth.
P304+P340 IF INHALED: Remove victim to fresh air and Keep at rest in a position comfortable for breathing.
P405 Store locked up.

MERCURIC THIOCYANATE price

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MERCURIC THIOCYANATE Chemical Properties,Uses,Production

Chemical Properties

Mercuric thiocyanate is an inorganic chemical substance. It is a stable solid at room temperature, and depending upon the purity, it appears as odourless white crystalline powder or grey. It is insoluble in water and denser than water and sinks in water. On decomposition, mercuric thiocyanate releases hazardous substances such as cyanide vapours, vapours of mercury, oxides of nitrogen (NO, NO2), and oxides of sulphur (SO2, SO3). Mercury thiocyanate has limited uses in chemical synthesis.

Chemical Properties

Mercury thiocyanate is a white, odorless powder.

Uses

For Pharaoh's serpents (fireworks); intensifier in photography.

Air & Water Reactions

Insoluble in water.

Reactivity Profile

MERCURIC THIOCYANATE decomposes into its elements at about 165°C. Burns readily in air to generate a coil of cohesive ash resembling a serpent (hence used in a firework: Pharaoh's serpents). Swells up to many times its original volume if heated [USCG, 1999]. Soluble in dilute hydrochloric acid [Merck]. Incompatible with strong oxidizing agents.

Hazard

Highly toxic by ingestion, inhalation, and skin absorption.

Health Hazard

Mercuric thiocyanate causes severe eye and skin irritation with possible burns and causes digestive and respiratory tract irritation with possible burns. It may impair fertility, may cause harm to the unborn child, is harmful if inhaled, may cause allergic skin reaction, may cause kidney damage, may cause CNS effects, is light sensitive, and is a severe marine pollutant. Contact with acids liberates very toxic gas. The target organs include kidneys, CNS, reproductive system, eyes, and skin.

Safety Profile

A poison by ingestion and intraperitoneal routes. Moderately toxic by skin contact. Thermally unstable and decomposition may be vigorous. When heated to decomposition it emits very toxic fumes of Hg, NOx, SOx, and CN-. See also MERCURY COMPOUNDS and CYANATES.

Potential Exposure

Mercury thiocyanate is used in photography and fireworks.

Shipping

UN1646 Mercury thiocyanate, Hazard Class: 6.1; Labels: 6.1-Poisonous materials.

Purification Methods

Recrystallise it from H2O, and it can give various crystal forms depending on conditions. Its solubility in H2O is 0.069% at 25o, but is more soluble at higher temperatures. It decomposes to Hg above 165o. Poisonous. [Mason & Forgeng J Phys Chem 35 1121 1931, Birckenbach & Kolb Chem Ber 68 919 1935.]

Incompatibilities

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. Mercury thiocyanate is sensitive to heat; expands to many times its original volume and then decomposes at freezing/melting point forming toxic fumes of sulfur oxides, mercury cyanide, and nitrogen oxides. Contact with acid or acid fumes causes release of toxic mercury and cyanide vapors. Incompatible with chlorine, reducing agents such as hydrides, sulfides

Waste Disposal

Small amounts may be destroyed by alkaline hydrolysis. Admixture with alkali can be followed by soil burial. Larger quantities can be disposed of by incineration in admixture with acetone or xylene and using effluent gas scrubbing. Do not reuse empty container; proper disposal required.

MERCURIC THIOCYANATE Preparation Products And Raw materials

Raw materials

Preparation Products


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