Glass colorants

Description

Inorganic materials are used to color or opacify glass as well as to color ceramic glazes and vitreous inorganic enamels. Examples include:

- opaque white: fluorides, oxide tin oxide, or ash bone ash.

- iridescence: silver and bismuth.

- black: two or more oxide cobalt, oxide glaze copper, oxide black iron, and oxide nickel oxides, or iron and carbon.

- gray: oxide nickel oxide and dioxide titanium dioxide.

- purple: neodymium oxide.

- blue: oxide cobalt oxide, oxide glaze copper oxide.

- blue-green: chromate iron chromate, or oxide glaze copper oxide.

- green: oxide black iron oxide and oxide chromic oxide.

- yellow-green: oxide chromic oxide, or sulfide cadmium sulfide.

- yellow: yellow uranium oxide, iron/manganese, oxide ceric oxide, or oxide silver oxide (surface).

- amber: oxide iron oxide and sulfur, coal and sulfur, or disulfide iron disulfide.

- red: sulfide cadmium sulfide, cadmium selenide, manganese, metallic gold, copper oxide, trichloride gold chloride or of Cassius gold-tin purple (purple of Cassius).

- violet: oxide manganese oxide

Synonyms and Related Terms

glass colourants (Br.); colorantes para vidro (Port.)

Authority

• Michael McCann, Michael McCann, Artist Beware, Watson-Guptill Publications, New York City, 1979

• Edward Reich, Carlton J. Siegler, Edward Reich, Carlton J. Siegler, Consumer Goods: How to Know and Use Them, American Book Company, New York City, 1937