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Improvements in the Manufacture of Tri- and Tetrabromindigo.
Improvements in the Manufacture of Tri- and Tetrabromindigo.
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机译:改善三溴和四溴联苯醚的生产。
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2404. Ellis, G. B., [Chemische Fabrik vorm. Sandoz]. Jan. 31. Tri- and tetra-bromindigo are obtained by brominating indigo or mono- or di-bromindigo in presence of diethyloxalate. Specification 5122/07 is referred to.
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