Formamidine Sulfinic Acid Bleaching of DIP and Acidifying Treatment of Bleached Pulp

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At present aniline and acetone are used as raw materials in the production of RD condensed at 150-165 u2103 in the presence of sulfinic acids polymerized in hydrochloric acid solutions .

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Study on the Formamidine Sulfinic Acid ( FAS ) Bleaching of Deinked Pulp

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This paper introduces the bleaching method of deinked pulp the preparation physical_chemical properties and decolorizing mechanism of formamidine sulfinic acid and the experiment of FAS bleaching of deinked pulp .

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Studies on the organic precipitants for zirconium u2170 . ortho - nitrobenzene sulfinic acid

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Ortho nitrobenzene sulfinic acid precipitates zirconium quantitatively from hydrochloric acid solutions not stronger than 0.6N .

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