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Examples
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Caro, a German chemist, invented in 1874 the red color known as eosine, which was brought to this country in the following year and sold for $125 per pound.
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The fourth group comprises saffranine, azo-dinaphthyldiamine, rosolic acid, coralline, pure eosine and cosine modified by a salt of lead, coccina, artificial ponceau, and red-wood.
Scientific American Supplement, No. 363, December 16, 1882 Various
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To an emulsion after Monckhoven's method, I add, before filtering, above eosine solutions to 1,000 c.c. emulsion, 15 c.c. each of yellow shade and
Scientific American Supplement, No. 530, February 27, 1886 Various
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After the experiments made by me, eosine mixtures acted equally in the yellow and blue shade; likewise mixtures of cyanin 1/10 and eosine yellow shade 9/10 were the most favorable.
Scientific American Supplement, No. 530, February 27, 1886 Various
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This is also the case with the blue shade eosine (eosine B) and the most bluish of all eosines, the bengal rosa.
Scientific American Supplement, No. 530, February 27, 1886 Various
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Potassa turns rosolic acid and coralline from an orange-red to a bright red, while it produces no change in eosine.
Scientific American Supplement, No. 363, December 16, 1882 Various
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Rosolic acid and coralline, as well as eosine, are turned by hydrochloric acid to an orange-yellow: the two former are distinguished from eosine by their shade, which inclines to a yellow.
Scientific American Supplement, No. 363, December 16, 1882 Various
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They might thus be confounded with the dyes of the fourth group, i.e., rosolic acid, coralline, eosine, and coccine.
Scientific American Supplement, No. 363, December 16, 1882 Various
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If the action of potassa is prolonged, modified eosine is blackened in consequence of the decomposition of the wool, the sulphur of which forms lead sulphide.
Scientific American Supplement, No. 363, December 16, 1882 Various
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It affords the same reactions as eosine, but its tone is more inclined to an orange.
Scientific American Supplement, No. 363, December 16, 1882 Various
chained_bear commented on the word eosine
"After alizarin, a new red dye entered production every year or two. Eosine, roccelline, and other synthetic reds were followed in 1878 by Biebrich scarlet, a German dye that was a near-perfect cochineal match when applied to wool. As new red dyes continued to appear--each one seemingly better, richer, cheaper than the last--the bottom dropped out of the cochineal market."
Amy Butler Greenfield, A Perfect Red: Empire, Espionage, and the Quest for the Color of Desire (New York: Harper Collins, 2005), 231.
October 6, 2017