POTASSIUM SULFIDE 0549
September 1997
CAS No: 1312-73-8 Dipotassium monosulfide
RTECS No: TT6000000 Dipotassium sulfide
UN No: 1382 Potassium monosulfide
EC No: 016-006-00-1 K2S
Molecular mass: 110.3
TYPES OF
ACUTE HAZARDS/SYMPTOMS PREVENTION FIRST AID/FIRE FIGHTING
HAZARD/
EXPOSURE
FIRE Highly flammable. Gives off irritating or NO open flames, NO sparks, and NO Water in large amounts, water spray.
toxic fumes (or gases) in a fire. smoking.
EXPLOSION Finely dispersed particles form explosive Do NOT expose to friction or shock. In case of fire: keep drums, etc., cool by
mixtures in air. Prevent deposition of dust; closed spraying with water.
system, dust explosion-proof electrical
equipment and lighting.
EXPOSURE PREVENT DISPERSION OF DUST! IN ALL CASES CONSULT A DOCTOR!
AVOID ALL CONTACT!
Inhalation Sore throat. Cough. Burning sensation. Local exhaust or breathing protection. Fresh air, rest. Half-upright position.
Shortness of breath. Headache. Artificial respiration if indicated. Refer for
Dizziness. Nausea. Symptoms may be medical attention.
delayed (see Notes).
Skin Pain. Blisters. Skin burns. Protective gloves. Protective clothing. Remove contaminated clothes. Rinse
skin with plenty of water or shower. Refer
for medical attention. Wear protective
gloves when administering first aid.
Eyes Pain. Redness. Severe deep burns. Safety goggles, or eye protection in First rinse with plenty of water for several
combination with breathing protection. minutes (remove contact lenses if easily
possible), then take to a doctor.
Ingestion Burning sensation. Sore throat. Do not eat, drink, or smoke during work. Rinse mouth. Do NOT induce vomiting.
Abdominal cramps. Nausea. Diarrhoea. Refer for medical attention.
Vomiting (see Inhalation).
SPILLAGE DISPOSAL PACKAGING & LABELLING
Do NOT wash away into sewer. Sweep spilled substance EU classification Airtight.
into containers (extra personal protection: chemical C Symbol
protection suit including self-contained breathing apparatus). N Symbol
R: 31-34-50
S: (1/2-)26-45-61
UN classification
UN Hazard Class: 4.2
UN Pack Group: II
EMERGENCY RESPONSE SAFE STORAGE
Transport Emergency Card: TEC (R)-42G15 Fireproof. Separated from strong oxidants, strong acids. Dry.
NFPA Code: H3; F1; R0
Prepared in the context of cooperation between the International
IPCS Programme on Chemical Safety and the European Commission 漏
IPCS 2006
International
Programme on
SEE IMPORTANT INFORMATION ON THE BACK.
Chemical Safety
0549 POTASSIUM SULFIDE
IMPORTANT DATA
Physical State; Appearance Routes of exposure
HYGROSCOPIC, WHITE CRYSTALS, WITH CHARACTERISTIC ODOUR. The substance can be absorbed into the body by inhalation and by
TURNS RED OR BROWN ON EXPOSURE TO AIR. ingestion.
Physical dangers Inhalation risk
Dust explosion possible if in powder or granular form, mixed with air. Evaporation at 20/C is negligible; a harmful concentration of airborne
particles can, however, be reached quickly.
Chemical dangers
May explosively decompose on shock, friction, or concussion. The Effects of short-term exposure
substance may spontaneously ignite on contact with air. On combustion, The substance is corrosive to the eyes, the skin and the respiratory tract.
forms hydrogen sulfide and sulfur oxides. The substance decomposes on Inhalation of this substance may cause lung oedema (see Notes).
contact with acids producing highly toxic and flammable hydrogen sulfide Exposure at high levels may result in death. The effects may be delayed.
(ICSC # 0165). The solution in water is a strong base, it reacts violently Medical observation is indicated.
with acid and is corrosive. Reacts with oxidants producing sulfur dioxide.
Occupational exposure limits
TLV not established.
PHYSICAL PROPERTIES
Melting point: 840/C Solubility in water: very good
Relative density (water = 1): 1.8
ENVIRONMENTAL DATA
The substance is harmful to aquatic organisms.
NOTES
The symptoms of lung oedema often do not become manifest until a few hours have passed and they are aggravated by physical effort. Rest and
medical observation are therefore essential.
Immediate administration of an appropriate inhalation therapy by a doctor or a person authorized by him/her, should be considered.
Card has been partially updated in August 2007: see EU Classification.
ADDITIONAL INFORMATION
Neither the EC nor the IPCS nor any person acting on behalf of the EC or the IPCS is responsible
LEGAL NOTICE for the use which might be made of this information
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