vat blue BC

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vat blue BC
Posting date : Nov 30, 2009
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HS-CODE
32-
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Nature: a dark blue powder. Sodium hydrosulfite in alkaline solution was blue. In the concentrated sulfuric acid in brown, blue and diluted precipitation. Not dissolve in water and most organic solvents. 2 - amino-anthraquinone with caustic soda and caustic alkali in the mixture of potassium nitrate, the presence of sodium acetate obtained by alkali fusion and coarse-grained, and then the insurance flour. Bright color, the color fastness is superior, but the impatience chlorine bleach. Is mainly used for cotton, viscose fiber, Victoria / cotton, polyester / cotton fabric dyeing. Is also used in the system of organic pigments.

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