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Lead fluoride

Product Name:
Lead fluoride
CAS No.
7783-46-2
Chemical Name:
Lead fluoride
CBNumber:
CB2742144
Molecular Formula:
F2Pb
Formula Weight:
245.2
MOL File:
7783-46-2.mol
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Lead fluoride Property

Melting point:
824 °C(lit.)
Boiling point:
1293 °C
Density 
8.445 g/mL at 25 °C(lit.)
Flash point:
1290°C
form 
powder
color 
White to off-white
Specific Gravity
8.445
Water Solubility 
0.065 g/100 mL (20 ºC)
Merck 
14,5408
Solubility Product Constant (Ksp)
pKsp: 7.48
CAS DataBase Reference
7783-46-2(CAS DataBase Reference)
NIST Chemistry Reference
Lead difluoride(7783-46-2)
EPA Substance Registry System
Lead(II) fluoride (7783-46-2)
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Safety

Hazard Codes 
T,N
Risk Statements 
61-20/22-33-50/53-62
Safety Statements 
53-45-60-61
RIDADR 
UN 2291 6.1/PG 3
WGK Germany 
3
RTECS 
OG1225000
Hazard Note 
Toxic
TSCA 
Yes
HazardClass 
6.1
PackingGroup 
III
HS Code 
28261990
Hazardous Substances Data
7783-46-2(Hazardous Substances Data)
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N-Bromosuccinimide Price More Price(8)

Sigma-Aldrich Gold
Product number:
236152
Product name :
Lead(II) fluoride
Purity:
powder, ≥99%
Packaging:
100g
Price:
$61.5
Updated:
2019/12/02
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Buy
Sigma-Aldrich Gold
Product number:
229725
Product name :
Lead(II) fluoride
Purity:
99.99% trace metals basis
Packaging:
25g
Price:
$114
Updated:
2019/12/02
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Buy
Alfa Aesar Gold
Product number:
010723
Product name :
Lead(II) fluoride, Puratronic?, 99.997% (metals basis)
Packaging:
100g
Price:
$328
Updated:
2020/06/24
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Buy
Alfa Aesar Gold
Product number:
010723
Product name :
Lead(II) fluoride, Puratronic?, 99.997% (metals basis)
Packaging:
25g
Price:
$103
Updated:
2020/06/24
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Buy
Strem Chemicals Gold
Product number:
93-8214
Product name :
Lead(II) fluoride, 99+%
Packaging:
100g
Price:
$52
Updated:
2020/06/24
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Buy
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Lead fluoride Chemical Properties,Usage,Production

Physical Properties

Colorless orthorhombic crystals or white powder; converts to cubic form at 316°C; density 8.445 g/cm3 (orthorhombic form) and 7.750 g/cm3 (cubic form); melts at 855°C; vaporizes at 1,290°C; slightly soluble in water (640 mg/L at 20°C); KSP 7.12x10–7 at 25°C; soluble in nitric acid; insoluble in acetone and ammonia.

Uses

Lead difluoride is used in low melting glasses; in glass coatings to reflect infrared rays; in phosphors for television-tube screens; for nickel plating on glass; and as a catalyst for the manufacture of picoline.

Preparation

Lead difluoride can be prepared by several methods. It is obtained by treating lead hydroxide or lead carbonate with hydrofluoric acid, followed by evaporation of the solution:
Pb(OH)2 + 2HF → PbF2 + 2H2O
Alternatively, it is precipitated by adding hydrofluoric acid to a lead(II) salt solution; or adding potassium fluoride to lead nitrate solution:
2KF + Pb(NO3)2 → PbF2 + 2KNO3
Lead difluoride also can be directly synthesized from its elements, by the action of lead with fluorine.

Toxicity

Slightly to moderately toxic by ingestion and subcutaneous routes. The oral LD50 in rats is around 3,000 mg/kg.

Chemical Properties

Lead fluoride is a white to colorless, odorless crystalline (rhombic, orthorhombic) solid

General Description

Odorless white solid. Sinks in water.

Reactivity Profile

Calcium carbide mixed with Lead fluoride , at ordinary temperatures, becomes incandescent [Mellor 5:862-64. 1946-47].

Health Hazard

Not irritating to skin or mucuous membranes; protect against chronic poisoning. Early symptoms of lead intoxication via inhalation or ingestion are most commonly gastrointestinal disorders, colic, constipation, etc.; weakness, which may go on to paralysis chiefly of the extensor muscles of the wrists and less often the ankles, is noticeable in the most serious cases. Ingestion of a large amount causes local irritation of the alimentary tract; pain, leg cramps, muscle weakness, paresthesias, depression, coma, and death may follow in 1 or 2 days. Contact with eyes causes irritation.

Fire Hazard

Non-combustible, substance itself does not burn but may decompose upon heating to produce corrosive and/or toxic fumes. Some are oxidizers and may ignite combustibles (wood, paper, oil, clothing, etc.). Contact with metals may evolve flammable hydrogen gas. Containers may explode when heated.

Potential Exposure

Used to make other chemicals, underwater paints; electronic and optical parts (for growing single-crystal, solid-state lasers); in high-temperature dryfilm lubricants; and making special grades of glass.

Shipping

UN3288 Toxic solids, inorganic, n.o.s., Hazard Class: 6.1; Labels: 6.1-Poisonous materials, Technical Name Required. UN2291 Lead compounds, soluble n.o.s., Hazard Class: 6.1; Labels: 6.1-Poisonous materials, Technical Name Required

Incompatibilities

Violent reaction with oxidizers, chemically active metals; calcium carbide. May ignite combustibles, such as wood, paper, oil, etc

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Lead fluoride Suppliers

Global(109)Suppliers
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Alfa Aesar
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400-610-6006; 021-67582000
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