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单词 madder bleach
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madder bleach
madder bleach n. rare a method of bleaching fabric to whiteness by washing, boiling, and treating with chemicals.
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the world > matter > colour > named colours > white or whiteness > whitening > [noun] > bleaching > bleaching process > specific
souring1756
grey souring1843
grey sour1875
white sour1875
madder bleach1891
kiering1922
1891 S. T. Sadtler Hand-bk. Industr. Organic Chem. xiv. 448 The method of bleaching, which has reached a high state of perfection, is the so-called ‘madder-bleach’, from the fact that it is employed on all piece goods to be printed with alizarin.
1909 L. A. Olney Textile Chem. & Dyeing ii. 58 The Madder Bleach... In calico printing..where a particularly clear and white ground is desired this form of bleach is used.
extracted from maddern.adj.
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