General Description
Black to silvery powdery or crystalline solid. Sinks in water.
Reactivity Profile
The reaction between iodine monochloride and any of the following is vigorous: cadmium sulfide, LEAD SULFIDE(1314-87-0), silver sulfide, or zinc sulfide [Mellor 2, Supp. 1:502. 1956].
Air & Water Reactions
Insoluble in water.
Health Hazard
INHALATION OR INGESTION: Abdominal pain, loss of appetite, weight loss, constipation, apathy or irritability, vomiting, fatigue, headache, weakness metallic taste and muscle incoordination. Lead line on gums. EYES: Irritation. May cause corneal destruction. SKIN: Pain and severe burns.
Potential Exposure
Lead sulfide is used in ceramics, infrared radiation detectors, and semiconductors.
Fire Hazard
Behavior in Fire: At fire temperatures emits highly toxic and irritating sulfur oxides.
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, including 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.
Shipping
UN3077 Environmentally hazardous substances,
solid, n.o.s., Hazard class: 9; Labels: 9-Miscellaneous hazardous material, Technical Name Required. UN3288 Toxic
solids, inorganic, n.o.s., Hazard Class: 6.1; Labels: 6.1-
Poisonous materials, Technical Name Required.
Incompatibilities
Incompatible with oxidizers (chlorates,
nitrates, peroxides, permanganates, perchlorates, chlorine,
bromine, fluorine, etc.); contact may cause fires or explosions. Keep away from alkaline materials, strong bases,
strong acids, oxoacids, epoxides, and iodine monochloride.
Sulfides react with acids to produce toxic and flammable
vapors of hydrogen sulfide.
Description
Lead sulfide is a silvery to black crystallinepowder. Molecular weight = 239.25; Boilingpoint =1281℃ (sublimes); Freezing/Meltingpoint= 1114℃. Hazard Identification (based on NFPA-704M Rating System): Health 1, Flammability 0, Reactivity 0.Practically insoluble in water (0.000086 g/100-cc water at13℃).
Chemical Properties
Lead gray in color, lead-gray streak,
metallic luster, good cubic cleavage. Mohs hardness 2.5. Soluble in strong nitric acid, in excess of hot hydrochloric acid.
Chemical Properties
Lead(II) sulfide is a silvery to black crystalline powder.
Lead(II) sulfide can be precipitated from a solution of lead (II) salt and hydrogen sulfide.
Lead (II) sulfide has been used during many years as source of lead (Pb). The main method to obtain the lead is the smelting of PbS and then, the lead (II) oxide obtained is reduced to Pb and carbon monoxide:
2 PbS + 3 O2 → 2 PbO + 2 SO2
PbO + C → Pb + CO
Moreover, lead (II) sulfide is used as semiconductor and photoconductor due its chemical proprieties. It is also used as black pigment. In recent years, it has been used in to obtain nanoparticles to use in electronic or electric devices.
Uses
The size for our lead sulfide (PbS) quantum dots (QDs) varies between 2.5 to 8 nm and depending upon this, these QDs emit between 900-1600 nm. Our PbS QDs possess high quantum yield, sharp emission and exhibit narrow fluorescence band (full width at half maximum <100 nm), which make them suitable as light absorber or IR emitter in applications in solar cells, photodetectors and infrared light emitting diodes (LEDs).
Uses
Glazing earthenware.
Uses
Lead(II) sulfide is used as a semiconductor. Used in electronic devices and Infrared sensor.
Definition
galena: A mineral form of lead(II)sulphide, PbS, crystallizing in thecubic system; the chief ore of lead. Itusually occurs as grey metallic cubes,frequently in association with silver,arsenic, copper, zinc, and antimony.Important deposits occur in Australia(at Broken Hill), Germany, the USA(especially in Missouri, Kansas, andOklahoma), and the UK.
storage
Color Code—Blue: Health Hazard/Poison: Storein a secure poison location. Prior to working with thischemical you should be trained on its proper handling andstorage. Lead sulfide must be stored to avoid contact withoxidizers (such as perchlorates, peroxides, permanganates,chlorates, and nitrates) and chemically active metals (suchas potassium, sodium, magnesium, and zinc), since violentreactions occur. Store in tightly closed containers in a cool,well-ventilated area away from moisture and acids. Lead isregulated by an OSHA Standard 1910.1025. All requirements of the standard must be followed. A regulated,marked area should be established where this chemical ishandled, used, or stored in compliance with OSHAStandard 1910.1045.
Structure and conformation
The space lattice of PbS belongs to the cubic system, and its rock salt structure has a lattice constant
of a=0.592 nm and Pb-S=0.296 nm.
