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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 stable to light, heat, and acid but fades in the presence of ascorbic acid.
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Jean-Baptiste Guimet (20 July 1795 – 8 April 1871), French industrial chemist, and inventor of synthetic colors, [2] was born at Voiron, Isère.. He studied at the École Polytechnique in Paris, and in 1817 entered the Administration des Poudres et Salpêtres. [3]
Synthetic colorants are those created in a laboratory or industrial setting. The production and improvement of colorants was a driver of the early synthetic chemical industry, in fact many of today's largest chemical producers started as dye-works in the late 19th or early 20th centuries, including Bayer AG (1863). [ 2 ]
Egyptian blue: a synthetic pigment of calcium copper silicate (CaCuSi 4 O 10). Thought to be the first synthetically produced pigment. Han blue: BaCuSi 4 O 10. Azurite: cupric carbonate hydroxide (Cu 3 (CO 3) 2 (OH) 2). Basic copper carbonate: Cu 2 (OH) 2 CO 3. Iron pigments. Prussian blue (PB27): a synthetic inert pigment made of iron and ...
The first synthetic dye, mauve, was discovered serendipitously by William Henry Perkin in 1856. [11] [12] [13] The discovery of mauveine started a surge in synthetic dyes and in organic chemistry in general. Other aniline dyes followed, such as fuchsine, safranine, and induline. Many thousands of synthetic dyes have since been prepared. [14 ...
However, during the Tang dynasty (618–907), when the synthetic vermilion was introduced, that color became darker and richer. The poet Bai Juyi (772–846) wrote in a song poem praising Jiangnan , "the flowers by the river when the sun rises are redder than flames", and the word he used for red was the word for vermilion, or Chinese red.
In 1824, the Societé pour l'Encouragement d'Industrie offered a prize for the artificial production of the precious color. Processes were devised independently by Jean Baptiste Guimet (1826) and Christian Gmelin (1828); while Guimet kept his process a secret, Gmelin published his, and thus became the originator of the French synthetic ...
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