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Antimony Oxide

Alternate Names: Antimony Trioxide, Senarmonite

Oxide Analysis Formula
Sb2O3 100.00% 1.00
Oxide Weight 291.60
Formula Weight 291.60

Notes

Antimony oxide is a white powder and is derived from the mineral stibnite (antimony sulfide) or produced by the oxidation of antimony metal or as a byproduct of the refining or antimonial-lead alloys. It sometimes behaves as a metal and sometimes as a non metal.

In the glass industry small percentages of antimony oxide are used to remove bubbles in optical glass, to decolorize specialty glasses and as a stabilizing agent in the production of emerald green glass. It is slightly fluxing in higher temperature glazes.

Antimony oxide is used as an opacifier in porcelain enamel (mainly leadless but it has been replaced to an extent by titania) and ceramic glazes. However it can give a yellowish color if the glaze contains lead, due to the precipitation of yellow lead antimonate (known as Naples yellow).

Antimony is also used as a yellow body stain in combination with rutile or titanium.

The brick industry employs antimony to bleach the surface of red-burning clay to a buff color to produce variegated coloration.

It is valuable for its high 'tinctoral strength' (hiding power or opacity) when used in conjunction with halogen-containing compounds. Nanophase Antimony Oxide is also available from Beijing Sunpu, it has very high surface catalytic activity, can be used as an accelerant in terylen polyester industry, and in high-grade plastic, rubber, dye, fiber, insulation materials, chemical composite materials,etc.

Related Information

Links

Hazards Antimony Oxide
Minerals Stibnite
URLs http://en.wikipedia.org/wiki/Antimony_trioxide
Antimony oxide at Wikipedia
Oxides Sb2O3 - Antimony Oxide
Typecodes Colorant
Metallic based materials that impart fired color to glazes and bodies.
Typecodes Generic Material
Generic materials are those with no brand name. Normally they are theoretical, the chemistry portrays what a specimen would be if it had no contamination. Generic materials are helpful in educational situations where students need to study material theory (later they graduate to dealing with real world materials). They are also helpful where the chemistry of an actual material is not known. Often the accuracy of calculations is sufficient using generic materials.

Data

Frit Softening Point650C
Density (Specific Gravity)5.2-5.7

By Tony Hansen


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