The synthetic dyestuffs : and the intermediate products from which they are derived (1905)
Cain, John Cannell, 1871-1921, Thorpe, Jocelyn Field, 1872-1940 · London : C. Griffen and Co. · leaf 136
). On fusion with caustic soda, the former yields Flavopurp urine; the latterIso- or Anthrapurpurine. When Alizarine was first prepared from anthraquinone sulphonic acid, it wasthought that the disulphonic acid alone reacted. It was soon discovered, how-ever, that only the /?-monosulphonic acid is… … (sodium /^-anthraquinonemonosulphonate). CO ONa ONa
Dyes and dyeing
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