| Identification | More | [Name]
POTASSIUM SULFIDE | [CAS]
1312-73-8 | [Synonyms]
POTASSIUM SULFIDE
dipotassiummonosulfide
dipotassiumsulfide
dipotassiumsulphide
Hepar sulfur
heparsulfuris
K2-S
Potassium monosulfide
Potassium sulfide (2:1)
Potassium sulfide (K2S)
potassiummonosulfide
potassiumsulfide(2:1)
potassiumsulfide(k2s)
potassiumsulfide(non-specificname)
potassiumsulfide,anhydrous
potassiumsulfide,hydrate
potassiumsulfide,hydrated,withnotlessthan30%waterofcrystallization
potassiumsulfide,pentahydrate
potassiumsulfide[k2s]
potassiumsulfuret | [EINECS(EC#)]
215-197-0 | [Molecular Formula]
K2S | [MDL Number]
MFCD00043083 | [Molecular Weight]
110.26 | [MOL File]
1312-73-8.mol |
| Chemical Properties | Back Directory | [Appearance]
Potassium sulfide is a brownish-red crystalline
solid. | [Melting point ]
912° | [Boiling point ]
912 °C | [density ]
1.74 | [solubility ]
soluble in H2O, ethanol; insoluble in ethyl ether | [form ]
Powder | [color ]
white to yellow | [Stability:]
Stable, but air-sensitive. Flammable. Contact with acids liberates poisonous hydrogen sulfide. Anhydrous material may be spontaneously combustible. | [Water Solubility ]
very soluble H2O, alcohol, glycerol; insoluble ether [MER06] | [Sensitive ]
air sensitive, hygroscopic | [Uses]
Reagent in analytical chemistry, depilatory,
medicine.
| [CAS DataBase Reference]
1312-73-8(CAS DataBase Reference) | [EPA Substance Registry System]
Potassium sulfide (K2S) (1312-73-8) |
| Hazard Information | Back Directory | [Chemical Properties]
colourless solid; turns brownish-red on | [Chemical Properties]
Potassium sulfide is a brownish-red crystalline
solid. | [General Description]
A red crystalline solid. Denser than water. Contact may severely irritate skin, eyes and mucous membranes. May be toxic by ingestion. | [Reactivity Profile]
A reducing agent. So readily oxidized as to be pyrophoric in air [Bretherick 1979 p. 120]. POTASSIUM SULFIDE, HYDRATED, WITH NOT LESS THAN 30% WATER OF CRYSTALLIZATION(1312-73-8) is incompatible with chloroform and nitrogen oxide. | [Air & Water Reactions]
May spontaneously ignite with exposure to air. Deliquescent. Water soluble | [Hazard]
Flammable, dangerous fire risk, may ignite
spontaneously, explosive in the form of dust or pow-
der.
| [Health Hazard]
TOXIC; inhalation, ingestion or skin contact with material may cause severe injury or death. Contact with molten substance may cause severe burns to skin and eyes. Avoid any skin contact. Effects of contact or inhalation may be delayed. Fire may produce irritating, corrosive and/or toxic gases. Runoff from fire control or dilution water may be corrosive and/or toxic and cause pollution. | [Potential Exposure]
Potassium sulfide is used as a reagent
in analytical chemistry; and in pharmaceutical preparations. | [Fire Hazard]
Combustible material: may burn but does not ignite readily. When heated, vapors may form explosive mixtures with air: indoors, outdoors and sewers explosion hazards. Contact with metals may evolve flammable hydrogen gas. Containers may explode when heated. Runoff may pollute waterways. Substance may be transported in a molten form. | [First aid]
If this chemical gets into the eyes, remove any
contact lenses at once and irrigate immediately for at least
15 minutes, occasionally lifting upper and lower lids. Seek
medical attention immediately. If this chemical contacts the
skin, remove contaminated clothing and wash immediately
with soap and water. Seek medical attention immediately.
If this chemical has been inhaled, remove from exposure,
begin rescue breathing (using universal precautions, includ-
ing resuscitation mask) if breathing has stopped and CPR if
heart action has stopped. Transfer promptly to a medical
facility. When this chemical has been swallowed, get
medical attention. If victim is conscious, administer water,
or milk. Do not induce vomiting. Medical observation is
recommended for 24?48 hours after breathing overexpo-
sure, 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. | [Shipping]
UN1382 Potassium sulfide, anhydrous or
Potassium sulfide with ＜30% water of crystallization,
Hazard Class: 4.2; Labels: 4.2-Spontaneously combustible
material. | [Incompatibilities]
May explosively decompose from shock,
friction, or concussion. Dust or granules may spontaneously
ignite on contact with air. The aqueous solution is a strong
base; reacts violently with strong acids and acid fumes. The
solid material decomposes on contact with acids producing
hydrogen sulfide, and oxidizers producing sulfur dioxide. | [Production Methods]
Potassium sulfide, K2S, yellowish to reddish solid, soluble, formed by heating potassium sulfate and carbon to a high temperature; potassium hydrogen sulfide, potassium bisulfide, potassium acid sulfide KHS, formed in solution by reaction of potassium hydroxide or carbonate solution and excess H2S. |
| Safety Data | Back Directory | [Hazard Codes ]
C,N | [Risk Statements ]
R31:Contact with acids liberates toxic gas.
R34:Causes burns.
R50:Very Toxic to aquatic organisms. | [Safety Statements ]
S26:In case of contact with eyes, rinse immediately with plenty of water and seek medical advice .
S45:In case of accident or if you feel unwell, seek medical advice immediately (show label where possible) .
S61:Avoid release to the environment. Refer to special instructions safety data sheet . | [RIDADR ]
1382 | [HazardClass ]
4.2 | [PackingGroup ]
II | [Safety Profile]
Poison by ingestion and
inhalation. Emits H2S in contact with acids;
steam. A flammable solid. Unstable; may
explode on percussion or rapid heating.
Ignites on contact with nitrogen oxide.
Reacts with H2O to form KOH and KSH.
When heated to decomposition it emits very toxic fumes of K2O and SOx. See also
SULFIDES. | [Hazardous Substances Data]
1312-73-8(Hazardous Substances Data) |
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