Glass colorants
Description
Inorganic materials are used to color or opacify Glass as well as to color ceramic glazes and vitreous enamels. Examples include:
- opaque white: fluorides, tin oxide, or Bone ash.
- iridescence: Silver and Bismuth.
- black: two or more cobalt, copper, iron, and nickel oxides, or Iron and Carbon.
- gray: Nickel oxide and Titanium dioxide.
- purple: neodymium oxide.
- blue: Cobalt oxide, copper oxide.
- blue-green: Iron chromate, or copper oxide.
- green: iron oxide and Chromic oxide.
- yellow-green: Chromic oxide, or Cadmium sulfide.
- yellow: uranium oxide, Iron/Manganese, Ceric oxide, or Silver oxide (surface).
- amber: Iron oxide and Sulfur, Coal and sulfur, or Iron disulfide.
- red: Cadmium sulfide, cadmium selenide, manganese, metallic Gold, copper oxide, Gold chloride or gold-tin purple (purple of Cassius).
- violet: Manganese oxide
Synonyms and Related Terms
glass colourants (Br.); colorantes para vidro (Port.)
Authority
- Michael McCann, Artist Beware, Watson-Guptill Publications, New York City, 1979
- Edward Reich, Carlton J. Siegler, Consumer Goods: How to Know and Use Them, American Book Company, New York City, 1937