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Chemicals

  • Red Lead
  • Red Lead
Red LeadRed Lead

Red Lead

  • Cas Number: 1309-37-1
  • Model Number: 110
  • Color: Red
  • Brand Name:EC
  • Product description: Lead tetroxide, also called minium, red lead or triplumbic tetroxide, is a bright red or orange crystalline or amorphous pigment. Chemically, red lead is lead tetroxide, Pb3O4, or 2PbO·PbO2.
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Item

Standard

PbO2

33.9%min

Pb3O4

97%min

Lead orthoplumbate and free PbO

99%min

Insoluble in nitric acid

0.1%max

Fe2O3

0.005%max

CuO

0.002%max

Sb2O3

0.005%max

GRL-1:Mesh size(20-50mesh)

95%min

GRL-2:Mesh size(12-24mesh)

95%min

GRL-3:Mesh size(10-50mesh)

95%min













Lead tetroxide (Red Lead) is most often used as a pigment for primer paints for iron objects. Due to its toxicity, its use is being limited. In the past, it was used in combination with linseed oil as a thick, long-lasting anti-corrosive paint. The combination of minium and linen fibres was also used for plumbing, now replaced with PTFE tape. Currently it is mostly used for manufacture of glass, especially lead glass. It finds limited use in some amateur pyrotechnics as a relatively potent oxidizer.

Red lead was also used for engineer's scraping, before being supplanted by Engineer's blue.

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