What is Red Lead And its Applications/Uses?


GRAVITA
Red Lead (Pb304 or 2PbO, PbO2) is soft orange and red colored powder. It is a useful ingredient for the storage battery, glass & ceramic industry and it occupies an important place in the Paint Industry for its rust inhibiting character. It is virtually insoluble in water and alcohol. However, it is soluble in the hydrochloric acid present in the stomach, therefore it is toxic when ingested. It dissolves in hydrochloric acid, glacial acetic acid, and a diluted mixture of nitric acid and hydrogen peroxide.
Red Lead

RED LEAD
Red Lead is used to a certain extent in the ceramics and glass, paints and pigments and explosives industries. Waldies Griffin brand Red Lead Non-Setting is a highly superior quality product and is the market leader.
Waldies also produces Red Lead Ordinary conforming to IS :57-1989 Type A and B. This formula corresponds to a PbO2 content significantly lower than 34.0% dependent upon the particular application in which they are to be used.
The material specifications of both Red Lead Ordinary & Red Lead Nonsetting are available in the datasheets attached above.

What is Red Lead Ordinary?
Red Lead Ordinary appears in a vibrant orange to red brick colored pigment which had a chemical property to be able to get dissolved in acetic acid and completely insoluble in water and ethanol. The leading red lead manufacturer in India employs reverberatory furnace to manufacture it by heating lead monoxide at 500°C in the presence of air.
Red lead ordinary has a relatively lower specific gravity, water and acid absorption rate (mg/gm) than red lead setting.  It is mostly used in ballistic modifiers for propellants of high-energy, ceramic glazes, in rubber adhesives and also in foam coatings used in X-rays as a radiation shield.

Applications

  • ·        Storage battery: Red lead is used in the production of positive plates/tubular plates.
  • ·        Paints: In ready mixed priming paints to be used within 24 hours of mixing.
  • ·        Paint Industry: Red lead is the most highly rated primer for the protection of ferrous metal surfaces for its rust inhibiting characters.
  • ·        Glass and Ceramics:In lead glass, glazes and other ceramics materials red lead is most widely used after litharge.
  • ·        Rubber and plastics: Red lead acts basically as an activator and vulcanizing agent as well as an inorganic colouring agent for natural and synthetic rubber and plastics.


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