General Description
A white solid.
Reactivity Profile
LEAD CHLORIDE(7758-95-4) is a weak reducing agent. Interaction of LEAD CHLORIDE(7758-95-4) and calcium is explosive on warming, [Mellor, 1941, Vol. 3, 369].
Air & Water Reactions
Insoluble in cold water; soluble in hot water.
Health Hazard
DUST AND FUMES. POISONOUS IF INHALED. SOLID: If swallowed, may cause metallic taste, abdominal pain, vomiting, and diarrhea.
Potential Exposure
Used to make lead salts; lead chromate
pigments; as an analytical reagent for making other chemicals; making printed circuit boards; as a solder and flux.
Fire Hazard
Not flammable. POISONOUS METAL FUMES MAY BE PRODUCED IN FIRE. Toxic metal fumes. Can emit toxic metal fumes.
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 medicalfacility. When this chemical has been swallowed, get medical attention. Give large quantities of water and induce
vomiting. Do not make an unconscious person vomit.
Shipping
UN2291 Lead compounds, soluble n.o.s., Hazard
Class: 6.1; Labels: 6.1-Poisonous materials, Technical
Name Required
Incompatibilities
A reducing agent. Violent reaction 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
chemically active metals. Explosive with calcium 1
warming
Description
Lead chloride is a white crystalline powder.Molecular weight = 278.00;Boilingpoint = 950℃;Freezing/Melting point= 501C; Vapor pressure= 1 mmHgat 547℃. Hazard Identification (based on NFPA-704 MRating System): Health 2, Flammability 0, Reactivity 0.Slightly soluble in cold water; more soluble in hot water.
Physical properties
White orthorhombic crystals; refractive index 2.199; density 5.85 g/cm3; melts at 501°C; vaporizes at 950°C; partially soluble in cold water (6.73 g/L at 0°C and 9.9 g/L at 20°C); KSP 1.17x10-5 at 25°C; moderately soluble in boiling water (33.4 g/L at 100°C); slightly soluble in dilute HCl and ammonia; insoluble in alcohol.
Occurrence
Lead dichloride occurs in nature as the mineral cotunnite. The compound is used in making many basic chlorides, such as Pattison’s lead white, Turner’s Patent Yellow, and Verona Yellow, used as pigments. Also, it is used as a flux for galvanizing steel; as a flame retardant in nylon wire coatings; as a cathode for seawater batteries; to remove H2S and ozone from effluent gases; as a sterilization indicator; as a polymerization catalyst for alphaolefins; and as a co-catalyst in manufacturing acrylonitrile.
Definition
ChEBI: An inorganic chloride consisting of two chlorine atoms covalently bound to a central lead atom.
Preparation
Lead dichloride is precipitated by adding hydrochloric acid or any chloride salt solution to a cold solution of lead nitrate or other lead(II) salt:
Pb2+ + 2Clˉ → PbCl2
Alternatively, it is prepared by treating lead monoxide or basic lead carbonate with hydrochloric acid and allowing the precipitate to settle.
.
Hazard
Toxic effects from ingestion may vary from low to moderate. The oral lethal dose in guinea pigs is documented as 1,500 mg/kg. (Lewis (Sr.), R. J. 1996. Sax’s Dangerous Properties of Industrial Materials, 9th ed. New York: Van Nostrand Reinhold).
Flammability and Explosibility
Notclassified
storage
Personal Protective Methods: W ear protective gloves andclothing to prevent any reasonable probability of skin con-tact. Use any barrier that will prevent contam ination fromthe dust. Safety equipment suppliers/manufacturers can pro-vide recommendations on the most protective g love/cloth-ing material for your operation. All protective clothing(suits, gloves, footwear, headgear) should be clean, avail-able each day, and put on before work. Work clothingshould be HEPA vacuumed before removal. Contact lensesshould not be wor when working with this chemical. Weardust-proof chemical goggles and face shield unless fullface-piece respiratory protection is worn. Employees shouldwash immediately with soap when skin is wet or contami-nated. Provide emergency showers and eyewash.
Purification Methods
Crystallise it from distilled water at 100o (33mL/g) after filtering through sintered-glass and adding a few drops of HCl, by cooling. After three crystallisations the solid is dried under vacuum or under anhydrous HCl vapour by heating slowly to 400o. The solubility in H2O is 0.07% at ~10o, and 0.43% at ~ 100o.
