Potassium sulfide, hydrated, with not less than 30% water of crystallization

  • Potassium sulfide, hydrated, with not less than 30% water of hydration
Formula
K2S
Structure
Description
A red crystalline solid.
Uses
Reagent in analytical chemistry, depilatory, medicine.

Registry Numbers and Inventories.
CAS
1312-73-8
EC (EINECS/ELINCS)
215-197-0
EC Index Number
016-006-00-1
EC Class
Contact with acids liberates toxic gas; Corrosive; Dangerous for the Environment
UN (DOT)
1347
Merck
12,7846
Beilstein/Gmelin
227217 (G)
Swiss Giftliste 1
G-7056
Canada DSL/NDSL
DSL
US TSCA
Listed
Austrailia AICS
Listed
New Zealand
Listed
Japan ENCS (MITI)
Listed
Korea ECL
Listed

Properties.
Formula
K2S
Formula mass
110.26
Melting point, °C
840
Density
1.74 g/cm3
Solubility in water
Soluble

Hazards and Protection.
Storage
Keep in a cool, dry, dark location in a tightly sealed container or cylinder. Keep away from incompatible materials, ignition sources and untrained individuals. Secure and label area. Protect containers/cylinders from physical damage.
Handling
All chemicals should be considered hazardous. Avoid direct physical contact. Use appropriate, approved safety equipment. Untrained individuals should not handle this chemical or its container. Handling should occur in a chemical fume hood.
Protection
Wear appropriate protective gloves, clothing and goggles.
Respirators
Wear positive pressure self-contained breathing apparatus (SCBA).
Small spills/leaks
Keep material out of water sources and sewers. Attempt to stop leak if without undue personnel hazard.
Stability
he substance may spontaneously ignite on contact with air. On combustion, forms hydrogen sulfide and sulfur oxides. Decomposes on contact with acids producing highly toxic and flammable hydrogen sulfide.
Incompatibilities
Incompatible with chloroform and nitrogen oxide.

Fire.
Fire fighting
Extinguish fire using agent suitable for type of surrounding fire. (Material itself does not burn or burns with difficulty.) Use water in flooding quantities as fog. Use alcohol foam, dry chemical or carbon dioxide. Keep run-off water out of sewers and water sources.
Fire potential
May burn but does not ignite readily.
Hazards
When heated, vapors may form explosive mixtures with air: indoors, outdoors, and sewers explosion hazards. May polymerize explosively when heated or involved in a fire. 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.
Combustion products
Fire will produce irritating, corrosive and/or toxic gases.
Health
3
 
Flammability
1
 
 
Reactivity
0
 

Health.
Poison_Class
2
Exposure effects
   Ingestion
Burns of the esophagus and less commonly the stomach may occur after caustic ingestion; the absence of oral mucosal injury does not reliably exclude esophageal burns. Patients with stridor, drooling or vomiting are more likely to have esophageal burns.
   Inhalation
Stridor, dyspnea, upper airway injury, and pulmonary edema, especially following inhalation of vaporized caustics, may occur.
   Skin
Severe skin irritation and/or burns may occur.
   Eyes
See Skin.

First aid
 
   Ingestion
Seek medical assistance.
   Inhalation
Move victim to fresh air. Apply artificial respiration if victim is not breathing. Administer oxygen if breathing is difficult.
   Skin
Remove and isolate contaminated clothing and shoes. In case of contact with substance, immediately flush with running water for at least 20 minutes.
   Eyes
In case of contact with substance, immediately flush with running water for at least 20 minutes.

Transport.
UN number
1347
Response guide
Hazard class
4.1
Packing Group
I
 
Std. Transport #
4935222