Preparation
Resorcinol and 4,5,6,7-Tetrachloroisobenzofuran-1,3-dione condensation, The resulting 2-(1,2,7,8-Tetrachloro-3,6-dihydroxy-9H-xanthen-9-yl)benzoic acidtetraiodide, potassium or sodium salt is then transformed into.
Properties and Applications
bright blue light pink. Soluble in water for blu-ray red, no fluorescence. The strong sulfuric acid for brown, after diluted pink precipitation.
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Standard
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Light Fastness
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Soaping
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Persperation Fastness
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Oxygen bleaching
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Fastness to seawater
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Fading
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Stain
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Fading
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Stain
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Fading
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Stain
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ISO
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1
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4
|
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4
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1
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5
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|
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AATCC
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1
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4
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4
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|
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3-4
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