LEAD(II, II, IV) OXIDE - (1314-41-6)

Introduction

Name: lead(II, II, IV) oxide; red lead oxide
* IUPAC
CAS Number: 1314-41-6
Chemical Formula: Pb3O4
Molar Mass: 685.5976 g
State of Matter: red tetragonal crystals
Mass Percent: Pb 90.665 %; O 9.3345 % 

Classification

• inorganic

Uses/Function

• "Plasters and ointments; manuf[acture] colorless glass; glaze for faience; flux for porcelain painting, protective paint for iron and steel; oil-color for ship paints, varnishes; coloring rubber; cement for glass, gas and steam pipes; storage batteries; pencils for writing on glass; manuf[acturing] lead peroxide, matches." 1

Physical Properties

Melting Point:*
830°C 2 = 1103.15 K = 1526°F

Density (g/cm3):
8.92 at room temperature 3
* - 1 atm pressure

Solubility

Qualitative:
insoluble:  • 3
soluble: 3

Bonding

Bonding: polar covalent
Ionic Character: 49.70 %

Thermochemistry

ΔHf° (s): -171.8 kcal/mol 4 = -718.81 kJ/mol
S° (s): 50.7 cal/(mol•K) 5 = 212.13 J/(mol•K)
ΔGf° (s): -143.8 kcal/mol 6 = -601.66 kJ/mol

For More Information

Sources

(1) - The Merck Index: An Encyclopedia of Chemicals, Drugs, and Biologicals, 13th ed.; Budavari, S.; O'Neil, M.J.; Smith, A.; Heckelman, P. E.; Kinneary, J. F., Eds.; Merck & Co.: Whitehouse Station, NJ, 2001; entry 5444.
(2) - Lide, David R. CRC Handbook of Chemistry and Physics, 83rd ed.; CRC Press: Boca Raton, FL, 2002; p 4-65.
(3) - Lide, David R. CRC Handbook of Chemistry and Physics, 83rd ed.; CRC Press: Boca Raton, FL, 2002; p 3-242.
(4) - Dean, John A. Lange's Handbook of Chemistry, 12th ed.; McGraw-Hill Book Company: New York, NY, 1979; p 9:4-9:94.
(5) - Dean, John A. Lange's Handbook of Chemistry, 12th ed.; McGraw-Hill Book Company: New York, NY, 1979; p 9:4-9:94.
(6) - Dean, John A. Lange's Handbook of Chemistry, 12th ed.; McGraw-Hill Book Company: New York, NY, 1979; p 9:4-9:94.