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An acid dye is a dye that is typically applied to a textile at low pH. They are mainly used to dye wool, not cotton fabrics. [1] Some acid dyes are used as food colorants, [2] [3] and some can also be used to stain organelles in the medical field. Acid dyes are anionic, soluble in water and are essentially applied from acidic bath.
Its chemical name is 1-(4-sulfo-1-napthylazo)-2-napthol-6,8-disulfonic acid, trisodium salt. Ponceau (17th century French for " poppy-coloured ") is the generic name for a family of azo dyes . Ponceau 4R is a strawberry red azo dye which can be used in a variety of food products, and is usually synthesized from aromatic hydrocarbons ; it is ...
Acid Blue AS Weak Acid Blue Acid Blue 25: 62055 anthraquinone: 6408-78-2: Acid fuchsin: Acid Magenta Acid Rubin Acid Violet 19 42685 triarylmethane: 3244-88-0: Acid orange 3 Acid orange 3 10385 nitro 6373-74-6: Acid orange 19: Acid Orange 19 14690 azo: 3058-98-8: Acid orange 20: Orange I Acid Orange 20 14600 azo 523-44-4: Acid Red 13: Fast red ...
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Critical reviews of Impressionists’ blues made comparisons to laundresses’ tubs, in particular the practice of laundry bluing, and to chemical waste dumped into the Seine by dye factories. [8] One critic accused Edgar Degas , known for experiments in aquatint , pastel and oil painting as having an obsession with "chemistry," evoking a ...
After putting the sweaters to the test on the streets of New York, we stand behind these 14 wool sweaters, including our best overall pick, the Jenni Kayne Cashmere Turtleneck ($595), plus the ...
Acid Orange 7, also known as 2-naphthol orange is an azo dye. It is used for dyeing wool. Preparation It is ...
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