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| CAS No.: | 7783-46-2 |
|---|---|
| Name: | Lead fluoride |
| Molecular Structure: | |
|
|
|
| Formula: | PbF2 |
| Molecular Weight: | 245.20 |
| Synonyms: | Leaddifluoride;Lead difluoride (PbF2);Lead(2+) fluoride;Plumbousfluoride; |
| EINECS: | 231-998-8 |
| Density: | 8.445 g/mL at 25 °C(lit.) |
| Melting Point: | 824 °C(lit.) |
| Boiling Point: | 19.5 °C at 760 mmHg |
| Flash Point: | 1290oC |
| Solubility: | water: 0.065 g/100 mL (20 °C) |
| Appearance: | White powder |
| Hazard Symbols: |
 T, N
|
| Risk Codes: | 61-20/22-33-50/53-62 |
| Safety: | 53-45-60-61 |
| Transport Information: | UN 2291 6.1/PG 3 |
| PSA: | 0.00000 |
| LogP: | 0.45960 |
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Chemistry
Chemical Name: Lead fluoride
IUPAC NAME: Difluorolead
CAS No.: 7783-46-2
EINECS: 231-998-8
RTECS: OG1225000
Molecular Formula: F2Pb
Molecular Weight: 245.2 g/mol
Melting Point: 824 °C(lit.)
Boiling Point: 19.5 °C at 760 mmHg
Following is the structure of Lead(ii) fluoride (7783-46-2):
Product Categories about Lead(ii) fluoride (7783-46-2) are Inorganics ; Catalysis and Inorganic Chemistry ; Chemical Synthesis ; Crystal Grade Inorganics ; Lead Salts ; LeadMetal and Ceramic Science ; Salts
The chemical synonymous of Lead(ii) fluoride (7783-46-2) are Lead fluoride ; Lead fluoride, alpha ; leadfluoride ; Plomb fluorure ; Plombfluorure
Toxicity Data With Reference
| 1. | orl-rat LD50:3031 mg/kg | GTPZAB Gigiena Truda i Professionalnye Zabolevaniia. Labor Hygiene and Occupational Diseases. 35 (8)(1991),43. | ||
| 2. | orl-mus LD50:3015 mg/kg | GTPZAB Gigiena Truda i Professionalnye Zabolevaniia. Labor Hygiene and Occupational Diseases. 35 (8)(1991),43. | ||
| 3. | scu-gpg LDLo:2800 mg/kg | CRSBAW Comptes Rendus des Seances de la Societe de Biologie et de Ses Filiales. 124 (1937),133. |
Consensus Reports
Lead and its compounds are on the Community Right-To-Know List. Reported in EPA TSCA Inventory.
Safety Profile
Moderately toxic by ingestion and subcutaneous routes. Vigorous reaction with fluorine. Incompatible with CaC2. When heated to decomposition it emits very toxic fumes of Pb and F−. See also LEAD COMPOUNDS and FLUORIDES.
Hazard Codes:
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Risk Statements about Lead(ii) fluoride (7783-46-2):
R61 May cause harm to the unborn child.
R20/22 Harmful by inhalation and if swallowed.
R33 Danger of cumulative effects.
R50/53 Very toxic to aquatic organisms, may cause long-term adverse effects in the aquatic environment.
R62 Possible risk of impaired fertility.
Safety Statements about Lead(ii) fluoride (7783-46-2):
S53 Avoid exposure - obtain special instructions before use.
S45 In case of accident or if you feel unwell, seek medical advice immediately (show the label where possible).
S60 This material and its container must be disposed of as hazardous waste.
S61 Avoid release to the environment. Refer to special instructions/safety data sheets.
Attention:
1. Storage: Store in a cool, dry place. Store in a tightly closed container.
2. Handling: Avoid breathing dust, vapor, mist, or gas. Avoid contact with skin and eyes.
3. 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.
Standards and Recommendations
OSHA PEL: TWA 0.05 mg(Pb)/m3; TWA 2.5 mg(F)/m3
ACGIH TLV: TWA 0.15 mg(Pb)/m3; TWA 2.5 mg(F)/m3; BEI: 3 mg/g creatinine of fluorides in urine prior to shift; 10 mg/g creatinine of fluorides in urine at end of shift.
NIOSH REL: (Inorganic Lead) TWA 0.10 mg(Pb)/m3
Specification
Lead(ii) fluoride (7783-46-2) is a chemical compound that is an odorless white solid which sinks in water.It is incompatible with strong oxidizers.It is used in melting glasses,glass coatings to reflect infrared rays,phosphors for television-tube screens and used as a catalyst for the manufacture of picoline.It is obtained by treating lead(II) hydroxide or lead(II) carbonate with hydrofluoric acid, followed by evaporation of the solution:
Pb(OH)2 + 2 HF → PbF2 + 2 H2O
Alternatively, it is precipitated by adding hydrofluoric acid to a lead(II) salt solution, or by adding potassium fluoride to a lead(II) nitrate solution.
2 KF + Pb(NO3)2 → PbF2 + 2 KNO3