Webanthraquinone, also called 9,10-anthraquinone, the most important quinone derivative of anthracene and the parent substance of a large class of dyes and pigments. It is prepared commercially by oxidation of anthracene or condensation of benzene and phthalic anhydride, followed by dehydration of the condensation product. Alizarin and many other … Alizarin (also known as 1,2-dihydroxyanthraquinone, Mordant Red 11, C.I. 58000, and Turkey Red ) is an organic compound with formula C 14H 8O 4 that has been used throughout history as a prominent red dye, principally for dyeing textile fabrics. Historically it was derived from the roots of plants of the madder genus. In 1869, it became the first natural dye to be produced synthetically. Alizarin is the main ingredient for the manufacture of the madder lake pigments known to painter…

Alizarine - definition of alizarine by The Free Dictionary

Webalizarin in American English (əˈlɪzərɪn) noun Chemistry a solid appearing reddish-orange as crystals and brownish-yellow as powder, C 14 H 8 O 4, one of the earliest known dyes, … Web(ə-lĭz′ər-ĭn) also a·liz·a·rine (-ĭn, -ə-rēn′) n. An orange-red crystalline compound, C 14 H 8 O 4, used as an acid-base indicator and in making dyes. [French alizarine, from alizari, madder root, from Spanish, probably from Arabic al-'uṣāra, the juice : al-, the + 'uṣāra, juice (from 'aṣara, to squeeze; see ʕṣr in Semitic roots ).] rotc oms score

Alizarine definition and meaning Collins English Dictionary

Webalizarin. ( əˈlɪzərɪn) n. 1. (Dyeing) a brownish-yellow powder or orange-red crystalline solid used as a dye and in the manufacture of other dyes. Formula: C6H4 (CO)2C6H2 (OH)2. … WebMay 27, 2024 · Alizarin (1,2-dihydroxyanthraquinone) is normally the main colorant extracted from the dried roots of the plant Rubia tinctorum L (Madder) and is undoubtedly the best known of the anthraquinone natural dyes. Its chemical formula is shown in Fig. 1.Madder has been used as a dye source for many centuries, being cultivated in central … WebDefine alizarine. alizarine synonyms, alizarine pronunciation, alizarine translation, English dictionary definition of alizarine. also a·liz·a·rine n. An orange-red crystalline compound, … st patrick merced ca bulletin