sulphur Bordeaux

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sulphur Bordeaux
Posting date : Dec 02, 2009
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32-
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Nature: purple-brown powder. Slightly soluble in water, soluble in sodium sulfide solution was red-brown to dark brown. In the concentrated sulfuric acid was dark blue purple, saying that after his release into a brown precipitate. Staining material in an alkaline sodium hydrosulfite solution becomes yellow-brown, oxidized restored to the primary colors; in sodium hypochlorite solution, almost all faded; case of concentrated sulfuric acid dark brown. Uses: For cotton, linen, viscose fiber and fabric dyeing, and the leveling of all do better. PVA dyed the same color yield with the cotton fiber, but the shade Shaoan, poor leveling. With dyed corduroy and other fabrics majority

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