Red Lead

Chemicals

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.
INQUIRY

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.