Lead (II) oxide

Main article: Lead(II) oxide

Lead (II) oxide (Plumbous oxide) is the chemical compound with the formula PbO. Its molecular weight is 223.20.

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Synonyms

Lead (II) oxide; Lead monoxide; Lead oxide yellow; C.I. 77577; Lead protoxide; Litharge yellow L-28; Massicot; Massicotite; Pigment yellow 46; Yellow lead ocher; plumbous oxide;

Description

Synthetic lead(II) oxide prepared by heating lead or certain lead compounds in air is called LITHARGE. It is a poisonous yellow or reddish-yellow solid, used in making lead glass, pottery glazes, and rubber

Physical and chemical properties

• Physical state: reddish yellow powder, odorless
• Melting point: 888 C
• Boiling point: 1470 C
• Specific gravity: 9.53
• Solubility:
  • insoluble in water and alcohol
  • soluble in acetic acid, nitric acid, alkalies
• pH: strong base

Health and safety

NFPA ratings

• Health: 3
• Flammability: 0
• Reactivity: 0

Toxicity

• H.S. CODE: 2824.10

Stability

Stable under ordinary conditions

Applications

Glazing pottery, Glass flux for painting, Lead glass; Metal cement with Glycerol; Storage batteries; Ointments and Plasters; Preparing lead subacetate solutions. Pproducing iridescent colors on brass and bronze; Coloring sulfur-containing substances; Pigment for rubber; Oil refining; Varnishes, Paints, and Enamels; Aassays for precious metal ores.

Sales specification

• APPEARANCE: Yellow powder
• LEAD MONOXIDE: 99.3% max
• LEAD PEROXIDE: 0.1% max
• RESIDUE IN NITRIC ACID: 0.1% max
• MOISTURE: 0.2% max

Sources

• Concise Inorganic Chemistry - JD Lee