Lead sulfide

  • Natural lead sulfide
  • Plumbous sulfide
Formula
PbS
Structure
Description
Black to silvery powdery or crystalline solid.
Uses
Glazing of earthenware.

Registry Numbers and Inventories.
CAS
1314-87-0
EC (EINECS/ELINCS)
215-246-6
RTECS
OG4550000
RTECS class
Other
UN (DOT)
2291
Merck
12,5445
Beilstein/Gmelin
13751 (G)
RCRA
D008
Swiss Giftliste 1
G-9927
Canada DSL/NDSL
DSL
US TSCA
Listed
Austrailia AICS
Listed
New Zealand
Listed
Japan ENCS (MITI)
Listed
Korea ECL
Listed

Properties.
Formula
PbS
Formula mass
239.26
Melting point, °C
1114
Boiling point, °C
1344
Vapor pressure, mmHg
1 91280 C)
Vapor density (air=1)
8.25
Density
7.5 g/cm3
Solubility in water
Insoluble
Heat of fusion
17.3 kJ/mol

Hazards and Protection.
Storage
Store in a tightly closed container. Keep from contact with oxidizing materials. Store in a cool, dry, well-ventilated area away from incompatible substances.
Handling
Wash thoroughly after handling. Remove contaminated clothing and wash before reuse. Use with adequate ventilation. Minimize dust generation and accumulation. Avoid contact with eyes, skin, and clothing. Avoid ingestion and inhalation.
Protection
Eyes: Wear appropriate protective eyeglasses or chemical safety goggles as described by OSHA's eye and face protection regulations in 29 CFR 1910.133 or European Standard EN166. 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
Sweep up, then place into a suitable container for disposal. Avoid generating dusty conditions. Provide ventilation.
Stability
Stable under normal temperatures and pressures.
Incompatibilities
Oxidizing agents, active metals, sodium.
Decomposition
Oxides of sulfur, lead/lead oxides.

Fire.
Fire fighting
Wear a self-contained breathing apparatus in pressure-demand, MSHA/NIOSH (approved or equivalent), and full protective gear. Extinguishing media: For small fires, use water spray, dry chemical, carbon dioxide or chemical foam.
Fire potential
Noncombustible
Hazards
At fire temperatures emits highly toxic and irritating sulfur oxides.
Combustion products
Poisonous and irritating gases are produced when heated.

Health.
Exposure limit(s)
OSHA TWA PEL: 30 µg/m3 action level as Pb
Carcinogin
G-A3, I-2B, CP65
Poison_Class
1
Exposure effects
Chronic exposure to lead may result in plumbism which is characterized by lead line in gum, headache, muscle weakness, mental changes,
   Ingestion
Causes gastrointestinal irritation with nausea, vomiting and diarrhea. Many lead compounds can cause toxic effects in the blood-forming organs, kidneys, and central nervous
   Inhalation
May cause respiratory tract irritation. May cause effects similar to those described for ingestion.
   Skin
May cause skin irritation.
   Eyes
Causes eye irritation. May cause visual disturbances.

First aid
 
   Ingestion
If victim is conscious and alert, give 2-4 cupfuls of milk or water. Never give anything by mouth to an unconscious person. Get medical aid immediately.
   Inhalation
Remove from exposure to fresh air immediately. If not breathing, give artificial respiration. If breathing is difficult, give oxygen. Get medical aid.
   Skin
Get medical aid. Immediately flush skin with plenty of soap and water for at least 15 minutes while removing contaminated clothing and shoes.
   Eyes
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
2291
Response guide
Hazard class
6.1
Packing Group
III
 
USCG CHRIS Code
LSU