Exact(4)
Red lead, or lead tetroxide (Pb3O4), is another lead oxide whose two most important uses are in paints and as an addition to litharge in storage batteries.
XRD-analysis proved the presence of lead tetroxide (red lead).
Three oxides are known: lead II) oxide or lead monoxide (PbO), lead tetroxide (Pb3O4) (sometimes called "minium"), and lead dioxide (PbO2).
The steel wires of the aviary were repainted in 2008 after the old minium paint (lead tetroxide) had been removed mechanically.
Similar(56)
The grids were treated with osmium tetroxide, uranyl acetate and lead citrate.
For the electron microscopic (EM) investigations, the pellet was fixed in 2% neutral glutaraldehyde, post-fixed in 2% osmium tetroxide, contrasted with 1% lead citrate and 4% uranyl acetate, and conventionally embedded in Epon.
In brief, slices of nodule tissue were high pressure frozen (BAL-TEC HPF 010), freeze substituted for 5 days at −90°C in acetone containing 2% osmium tetroxide, warmed and embedded in Spurrs resin; thin sections stained with uranyl and lead salts were imaged in a LEO 912 AB energy filter TEM.
These sections were then collected on copper mesh grids, stained a second time with 1% osmium tetroxide for 5 min, rinsed, treated with uranyl acetate for 8 min, rinsed, and in lead citrate for 8 min before final rinsing.
Additional biopsies from one PSSM horse (#49) was designated for routine electron microscopy and subsequently fixed in 2.5% buffered glutaraldehyde, postfixed in osmium tetroxide, embedded in epoxy resin, cut into 1-mm-thick sections, stained with uranyl acetate and lead citrate, and examined by transmission electron microscopy.
Not only is osmium tetroxide volatile, but it is extremely toxic.
The lunar lander ran on nitrogen tetroxide and Aerozine 50, which doesn't.
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