Mercury(II) tetrakis(thiocyanato-N)cobaltate(2-)

  • Cobaltate(2-), tetrakis(thiocyanato-N)-, mercury(2+) (1:1), (T-4)
Formula
C4CoHgN4S4
Structure
Description
Dark blue powder.

Registry Numbers and Inventories.
CAS
27685-51-4
EC (EINECS/ELINCS)
248-602-4
UN (DOT)
2025
Beilstein/Gmelin
NA
Canada DSL/NDSL
DSL
US TSCA
Listed

Properties.
Formula
C4CoHgN4S4
Formula mass
491.83

Hazards and Protection.
Storage
Store in a cool, dry place. Store in a tightly closed container. Poison room locked.
Handling
Minimize dust generation and accumulation. Do not breathe dust, vapor, mist, or gas. Do not get in eyes, on skin, or on clothing. Use only in a chemical fume hood.
Protection
Skin: Wear appropriate protective gloves to prevent skin exposure. Clothing: Wear appropriate protective clothing to prevent skin exposure.
Respirators
Follow the OSHA respirator regulations found in 29CFR 1910.134 or European Standard EN 149. Always use a NIOSH or European Standard EN 149 approved respirator when necessary.
Small spills/leaks
Vacuum or sweep up material and place into a suitable disposal container. Avoid generating dusty conditions.
Stability
Stable under normal temperatures and pressures.
Incompatibilities
Strong oxidizing agents, strong acids.
Decomposition
Nitrogen oxides, carbon monoxide, oxides of sulfur, carbon dioxide, cyanide fumes, mercury/mercury oxides, oxides of cobalt.

Fire.
Fire fighting
Wear a self-contained breathing apparatus in pressure-demand, MSHA/NIOSH (approved or equivalent), and full protective gear. Wear appropriate protective clothing to prevent contact with skin and eyes. Wear a self-contained breathing apparatus (SCBA) to prevent contact with thermal decomposition products. This material in sufficient quantity and reduced particle size is capable of creating a dust explosion. Extinguishing media: Use water spray to cool fire-exposed containers. In case of fire use water spray, dry chemical, carbon dioxide, or chemical foam.
Fire potential
Non-Combustible
Combustion products
Fire may produce irritating, corrosive and/or toxic gases.

Health.
Exposure effects
The toxological properties of this substance have not been fully investigated.
   Ingestion
May be fatal if swallowed.
   Inhalation
May be fatal if inhaled.
   Skin
May be fatal if absorbed through the skin.
   Eyes
May cause eye irritation.

First aid
 
   Ingestion
Induce vomiting. Get medical aid immediately. Wash mouth out with water.
   Inhalation
Get medical aid immediately. Remove from exposure to fresh air immediately. If not breathing, give artificial respiration. If breathing is difficult, give oxygen.
   Skin
Get medical aid immediately. Immediately flush skin with plenty of soap and water for at least 15 minutes while removing contaminated clothing and shoes.
   Eyes
Immediately flush eyes with plenty of water for at least 15 minutes, occasionally lifting the upper and lower eyelids. Get medical aid immediately.

Transport.
UN number
2025
Response guide
Hazard class
6.1
Packing Group
I; II; III