|LEAD Action News Volume
13 Number 1, November 2012, ISSN 1324-6011
Incorporating Lead Aware Times ( ISSN 1440-4966) and Lead Advisory Service News (ISSN 1440-0561)
The Journal of The LEAD (Lead Education and Abatement Design) Group Inc.
Editor-in-Chief: Zac Gethin-Damon
An extract from Printing Ink Handbook, 1958
By National Association of Printing Ink Manufacturers (U.S.).
Opaque white pigments commonly used in printing inks, listed in order of decreasing opacity are:
Transparent white pigments commonly used in printing inks, listed in order of decreasing transparency are:
INORGANIC COLOR PIGMENTS
Chrome Yellow is generally lead chromate, modified with other lead compounds, especially lead sulfate.
Chrome Orange and Molybdate Orange are modified lead compounds similar in structure to chrome yellow.
Some chrome colors tend to darken on exposure to light, and darken considerably on exposure to sulfur gases in the air.
Cadmium (Selenides) Yellows, Oranges and Reds are very fast to light and have excellent soap and alkali resistance.
Cadmium-Mercury Reds are among the newest additions to the pigment color field. Their properties are very similar to the older Cadmium Reds (Cadmium Selenide).
“Gold” is generally a mixture of brass flakes, copper flakes, and other metals mixed to obtain varying shades of “gold” such as Rich Gold and Pale Gold.
ORGANIC COLOR PIGMENTS
The organic Yellows pigments (Yellow Lakes, Hansa Yellow and Diarylide Yellows) are generally used as replacement for Chrome Yellows in order to avoid the use of lead compounds.
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Updated 29 November 2012
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