Potassium Sulfide Potassium Sulfide is an inorganic chemical compound of Potassium and Sulfur; it really is colorless solid and has rotten egg smell. It is hard to find as solid since it’s incredibly active and reacts with water easily and forms potassium hydro-oxide and potassium bi-sulfide. It is extremely flammable and produces irritating toxic gases after explosion. It could explode when comes in contact with air, acid, and water. Direct contact may perhaps trigger skin and eye burning.
Sulfur atom has valency 2 (negatively charged) while potassium atom has valency 1 (positively charged); one atom of sulfur combines with two atoms of potassium to form one neutral molecule of potassium sulfide. Potassium and Sulfur atom representation are: K+ and S-2. Other compounds of sulfur are: K2SO4 (K+, SO4-2); SO4 has valency 2 and negatively charged.
Potassium sulfide is made by combining potassium answer in anhydrous ammonia and sulfur element; 2 K + S = K2S. It is made by combining K2SO4 with coal at elevated temperature; K2SO4 + 4C = K2S + 4CO; K2SO4 + 2C = K2S + 2CO2; C (carbon) represents coal; CO is carbon monoxide gas and CO2 means carbon dioxide gas.
Potassium Sulfide is the name given by International Union of Pure and Applied Chemistry (IUPAC). Others names used are:
Molecular formula K2S
Molar mass 110.262 g/mol
Appearance colorless if pure, yellow/brown when impure
Density 1.8 gm/cm3
Melting point 8400C
Boiling point decomposes
Solubility soluble in water
Crystal Structure antiFluorite
Risk Phrases R17, R23, R25, R31, R34, R50
Safety Phrases S24, S26
Cations – Sodium sulfide, Iron sulfide
Others potassium sulfite, potassium sulfate
International Program on Chemical safety (IPCS)
Physical Dangers Powder/granular form of potassium sulfide causes explosion if in contact with air
Chemical Damage Potassium sulfide is very reactive, decomposes when in contact with acid, water producing toxic gases like sulfur dioxide, hydrogen sulfide, and may possibly explode on shock, friction, or concussion.
Routes of Exposure Inhalation, Ingestion, causes lung, respiratory tract, high-level ingestion may perhaps cause death
Spoilage Disposal Use personal protective device to handle spoilage, do not dump into sewer or other locations except in a container for later handling.
Packaging and leveling Airtight, follow standard procedures
Storage should be stored in fireproof container, separated from oxidants, acids.
Environmental safety harmful to aquatic organisms
Emergency Response transport Emergency card: TEC 42G15
NFTPA Code: H3F1, R0
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Chapter 2 : Carbon Compounds
2.1 Carbon Compounds
Organic and inorganic compound