chromotropen.
/ˈkrəʊmətrəʊp/ An acid colour used in dyeing. Also attributive.
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the world > matter > colour > colouring > colouring matter > [noun] > dye > types of dyes
pallOE
sanders1329
raddlea1350
nutgallc1450
bark1565
logwood1581
sanders-wood1615
catechu1682
cate1698
cachou1708
valonia1722
India wood1742
cutch1759
alizari1769
standard1808
iron buff1836
colorine1838
acid dye1840
garancin1843
French tub1846
suranji1848
morindin1849
water blue1851
union dye1852
indigo-carmine1855
hernant1858
pigment colour1862
rosaniline1862
rose aniline1862
bezetta1863
bottom1863
acid colour1873
paraphenylenediamine1873
indigo-extract1874
tin-pulp1874
phthalein1875
sightening1875
chrome1876
rose bengal1878
azo-colours1879
azine1887
basic dye1892
chromotrope1893
garance1896
ice colour1896
xylochrome1898
cross-dye1901
indanthrene1901
Lithol1903
vat dye1903
thioindigo1906
para red1907
vat colour1912
vat dyestuff1914
indanthrone1920
ionamine1922
Soledon1924
Solochrome1924
Solacet1938
indigoid1939
thioindigoid1943
fluorol1956
Procion1956
1893 E. Knecht et al. Man. Dyeing 536 A (new) dioxynaphthalene disulphonic acid (so-called chromotrop acid).
1893 E. Knecht et al. Man. Dyeing 537 The chromotrops do not dye evenly on previously mordanted wool.
1893 E. Knecht et al. Man. Dyeing 539 The chromotrop-blacks.
1902 Encycl. Brit. XXVII. 562/2 Chromotrope..is an Acid Colour which is applied to wool in an acid bath in the usual manner.
1906 Dyer 20 Jan. 15/1 Lactic acid is used in chromotrope dyeing.
1959 Chambers's Encycl. IV. 689/2 (caption) Chromotrope acid.
This entry has not yet been fully updated (first published 1933; most recently modified version published online December 2020).
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n.1893