Red Lead is
a bright red to orange, red powder which is used in making Lead glass and red
pigments; paint made with Red Lead is commonly used to protect
iron and steel from rusting. Chemically, Red Lead is Lead tetra
oxide, Pb3O4, a water-insoluble compound that is prepared by the
oxidation of metallic Lead or of litharge (Lead monoxide). The
commercial product sometimes contains litharge as an impurity.
Lead primer is one of the oldest and most commonly used
anti-corrosion pigments applied to metal surfaces. Orange-red in
color, Red Lead forms the prime coat for most of the largest bridges
in the world. Red Lead is also used as primer for most of the
intricate steel structures of buildings built in the 20th century.
Resistant to even salt water, Red Lead was liberally applied to the
hulls and decks of millions of ships. Typically, 85% Red Lead (Lead
concentration = 85%) was applied to these steel surfaces. Later,
Lead primers containing as much as 95% to 98% Lead were used.
Red Lead is virtually insoluble in water and alcohol. However, it is soluble
in hydrochloric acid present in stomach, therefore it is toxic when
ingested. It dissolves in
hydrochloric acid, glacial acetic acid, and diluted mixture of
nitric acid and hydrogen peroxide.
Red Lead is used to a certain extent in the ceramics and glass,
paints and pigments and explosives industries.
Our manufacturing plant for Red Lead have a Barton plant as the
first step to produce messicoat. The required input is refined Lead
ingots of minimum 99.97% purity. The Barton plant output is routed
to Red Lead furnace with their equipment in conjunction with a dust
collection plant, conveyors, grinder and cyclone-bag-house
filtration unit arrangements, culminating in a packing and storage
Standards : Conforms to IS : 57-1989 Type C
Red Lead Typical Specifications: